Class yii\mongodb\ActiveQuery
Inheritance | yii\mongodb\ActiveQuery » yii\mongodb\Query » yii\base\Component » yii\base\BaseObject |
---|---|
Implements | yii\base\Configurable, yii\db\ActiveQueryInterface, yii\db\QueryInterface |
Uses Traits | yii\db\ActiveQueryTrait, yii\db\ActiveRelationTrait, yii\db\QueryTrait |
Available since version | 2.0 |
Source Code | https://github.com/yiisoft/yii2-mongodb/blob/master/ActiveQuery.php |
ActiveQuery represents a Mongo query associated with an Active Record class.
An ActiveQuery can be a normal query or be used in a relational context.
ActiveQuery instances are usually created by yii\mongodb\ActiveRecord::find(). Relational queries are created by yii\mongodb\ActiveRecord::hasOne() and yii\mongodb\ActiveRecord::hasMany().
Normal Query ¶
ActiveQuery instances are usually created by yii\mongodb\ActiveRecord::find().
Because ActiveQuery extends from yii\mongodb\Query, one can use query methods, such as where(), orderBy() to customize the query options.
ActiveQuery also provides the following additional query options:
- with(): list of relations that this query should be performed with.
- asArray(): whether to return each record as an array.
These options can be configured using methods of the same name. For example:
$customers = Customer::find()->with('orders')->asArray()->all();
Relational query ¶
In relational context ActiveQuery represents a relation between two Active Record classes.
Relational ActiveQuery instances are usually created by calling yii\mongodb\ActiveRecord::hasOne() and yii\mongodb\ActiveRecord::hasMany(). An Active Record class declares a relation by defining a getter method which calls one of the above methods and returns the created ActiveQuery object.
A relation is specified by $link which represents the association between columns of different collections; and the multiplicity of the relation is indicated by $multiple.
If a relation involves a junction collection, it may be specified by via(). This methods may only be called in a relational context. Same is true for inverseOf(), which marks a relation as inverse of another relation.
Public Properties
Property | Type | Description | Defined By |
---|---|---|---|
$asArray | boolean | Whether to return each record as an array. | yii\db\ActiveQueryTrait |
$behaviors | yii\base\Behavior[] | List of behaviors attached to this component. | yii\base\Component |
$collection | yii\mongodb\Collection | Collection instance. | yii\mongodb\ActiveQuery |
$emulateExecution | boolean | Whether to emulate the actual query execution, returning empty or false results. | yii\db\QueryTrait |
$from | string|array | The collection to be selected from. | yii\mongodb\Query |
$indexBy | string|callable|null | The name of the column by which the query results should be indexed by. | yii\db\QueryTrait |
$inverseOf | string | The name of the relation that is the inverse of this relation. | yii\db\ActiveRelationTrait |
$limit | integer|yii\db\ExpressionInterface|null | Maximum number of records to be returned. | yii\db\QueryTrait |
$link | array | The columns of the primary and foreign tables that establish a relation. | yii\db\ActiveRelationTrait |
$modelClass | string | The name of the ActiveRecord class. | yii\db\ActiveQueryTrait |
$multiple | boolean | Whether this query represents a relation to more than one record. | yii\db\ActiveRelationTrait |
$offset | integer|yii\db\ExpressionInterface|null | Zero-based offset from where the records are to be returned. | yii\db\QueryTrait |
$options | array | Cursor options in format: optionKey => optionValue | yii\mongodb\Query |
$orderBy | array|null | How to sort the query results. | yii\db\QueryTrait |
$primaryModel | yii\db\ActiveRecord | The primary model of a relational query. | yii\db\ActiveRelationTrait |
$select | array | The fields of the results to return. | yii\mongodb\Query |
$via | array|object | The query associated with the junction table. | yii\db\ActiveRelationTrait |
$where | string|array|yii\db\ExpressionInterface|null | Query condition. | yii\db\QueryTrait |
$with | array | A list of relations that this query should be performed with | yii\db\ActiveQueryTrait |
Public Methods
Method | Description | Defined By |
---|---|---|
__call() | Calls the named method which is not a class method. | yii\base\Component |
__clone() | Clones internal objects. | yii\db\ActiveRelationTrait |
__construct() | Constructor. | yii\mongodb\ActiveQuery |
__get() | Returns the value of a component property. | yii\base\Component |
__isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Component |
__set() | Sets the value of a component property. | yii\base\Component |
__unset() | Sets a component property to be null. | yii\base\Component |
addOptions() | Adds additional cursor options. | yii\mongodb\Query |
addOrderBy() | Adds additional ORDER BY columns to the query. | yii\db\QueryTrait |
all() | Executes query and returns all results as an array. | yii\mongodb\ActiveQuery |
andFilterCompare() | Helper method for easy querying on values containing some common operators. | yii\mongodb\Query |
andFilterWhere() | Adds an additional WHERE condition to the existing one but ignores empty operands. | yii\db\QueryTrait |
andWhere() | Adds an additional WHERE condition to the existing one. | yii\db\QueryTrait |
asArray() | Sets the asArray() property. | yii\db\ActiveQueryTrait |
attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
average() | Returns the average of the specified column values. | yii\mongodb\Query |
batch() | Starts a batch query. | yii\mongodb\Query |
behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
buildCursor() | Builds the MongoDB cursor for this query. | yii\mongodb\Query |
canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\Component |
canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Component |
className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
column() | Executes the query and returns the first column of the result. | yii\mongodb\Query |
count() | Returns the number of records. | yii\mongodb\Query |
detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
distinct() | Returns a list of distinct values for the given column across a collection. | yii\mongodb\Query |
each() | Starts a batch query and retrieves data row by row. | yii\mongodb\Query |
emulateExecution() | Sets whether to emulate query execution, preventing any interaction with data storage. | yii\db\QueryTrait |
ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
exists() | Returns a value indicating whether the query result contains any row of data. | yii\mongodb\Query |
filterWhere() | Sets the WHERE part of the query but ignores empty operands. | yii\db\QueryTrait |
findFor() | Finds the related records for the specified primary record. | yii\db\ActiveRelationTrait |
findWith() | Finds records corresponding to one or multiple relations and populates them into the primary models. | yii\db\ActiveQueryTrait |
from() | Sets the collection to be selected from. | yii\mongodb\Query |
getBehavior() | Returns the named behavior object. | yii\base\Component |
getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
getCollection() | Returns the Mongo collection for this query. | yii\mongodb\ActiveQuery |
hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component |
hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
indexBy() | Sets the indexBy() property. | yii\db\QueryTrait |
init() | Initializes the object. | yii\mongodb\ActiveQuery |
inverseOf() | Sets the name of the relation that is the inverse of this relation. | yii\db\ActiveRelationTrait |
limit() | Sets the LIMIT part of the query. | yii\db\QueryTrait |
max() | Returns the maximum of the specified column values. | yii\mongodb\Query |
min() | Returns the minimum of the specified column values. | yii\mongodb\Query |
modify() | Performs 'findAndModify' query and returns a single row of result. | yii\mongodb\ActiveQuery |
off() | Detaches an existing event handler from this component. | yii\base\Component |
offset() | Sets the OFFSET part of the query. | yii\db\QueryTrait |
on() | Attaches an event handler to an event. | yii\base\Component |
one() | Executes query and returns a single row of result. | yii\mongodb\ActiveQuery |
options() | Sets the cursor options. | yii\mongodb\Query |
orFilterWhere() | Adds an additional WHERE condition to the existing one but ignores empty operands. | yii\db\QueryTrait |
orWhere() | Adds an additional WHERE condition to the existing one. | yii\db\QueryTrait |
orderBy() | Sets the ORDER BY part of the query. | yii\db\QueryTrait |
populate() | Converts the raw query results into the format as specified by this query. | yii\mongodb\ActiveQuery |
populateRelation() | Finds the related records and populates them into the primary models. | yii\db\ActiveRelationTrait |
prepare() | Prepares for query building. | yii\mongodb\ActiveQuery |
scalar() | Returns the query result as a scalar value. | yii\mongodb\Query |
select() | Sets the list of fields of the results to return. | yii\mongodb\Query |
sum() | Returns the sum of the specified column values. | yii\mongodb\Query |
trigger() | Triggers an event. | yii\base\Component |
via() | Specifies the relation associated with the junction table. | yii\db\ActiveRelationTrait |
where() | Sets the WHERE part of the query. | yii\db\QueryTrait |
with() | Specifies the relations with which this query should be performed. | yii\db\ActiveQueryTrait |
Protected Methods
Method | Description | Defined By |
---|---|---|
aggregate() | Performs the aggregation for the given column. | yii\mongodb\Query |
createModels() | Converts found rows into model instances. | yii\db\ActiveQueryTrait |
fetchRows() | Fetches rows from the given Mongo cursor. | yii\mongodb\Query |
fetchRowsInternal() | yii\mongodb\Query | |
filterCondition() | Removes empty operands from the given query condition. | yii\db\QueryTrait |
isEmpty() | Returns a value indicating whether the give value is "empty". | yii\db\QueryTrait |
normalizeOrderBy() | Normalizes format of ORDER BY data. | yii\db\QueryTrait |
Events
Event | Type | Description | Defined By |
---|---|---|---|
EVENT_INIT | yii\mongodb\Event | An event that is triggered when the query is initialized via init(). | yii\mongodb\ActiveQuery |
Property Details
Method Details
Defined in: yii\base\Component::__call()
Calls the named method which is not a class method.
This method will check if any attached behavior has the named method and will execute it if available.
Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.
public mixed __call ( $name, $params ) | ||
$name | string |
The method name |
$params | array |
Method parameters |
return | mixed |
The method return value |
---|---|---|
throws | yii\base\UnknownMethodException |
when calling unknown method |
public function __call($name, $params)
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $object) {
if ($object->hasMethod($name)) {
return call_user_func_array([$object, $name], $params);
}
}
throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}
Defined in: yii\db\ActiveRelationTrait::__clone()
Clones internal objects.
public void __clone ( ) |
public function __clone()
{
parent::__clone();
// make a clone of "via" object so that the same query object can be reused multiple times
if (is_object($this->via)) {
$this->via = clone $this->via;
} elseif (is_array($this->via)) {
$this->via = [$this->via[0], clone $this->via[1], $this->via[2]];
}
}
Constructor.
public void __construct ( $modelClass, $config = [] ) | ||
$modelClass | string |
The model class associated with this query |
$config | array |
Configurations to be applied to the newly created query object |
public function __construct($modelClass, $config = [])
{
$this->modelClass = $modelClass;
parent::__construct($config);
}
Defined in: yii\base\Component::__get()
Returns the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a getter: return the getter result
- a property of a behavior: return the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $value = $component->property;
.
See also __set().
public mixed __get ( $name ) | ||
$name | string |
The property name |
return | mixed |
The property value or the value of a behavior's property |
---|---|---|
throws | yii\base\UnknownPropertyException |
if the property is not defined |
throws | yii\base\InvalidCallException |
if the property is write-only. |
public function __get($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
// read property, e.g. getName()
return $this->$getter();
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name;
}
}
if (method_exists($this, 'set' . $name)) {
throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__isset()
Checks if a property is set, i.e. defined and not null.
This method will check in the following order and act accordingly:
- a property defined by a setter: return whether the property is set
- a property of a behavior: return whether the property is set
- return
false
for non existing properties
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing isset($component->property)
.
public boolean __isset ( $name ) | ||
$name | string |
The property name or the event name |
return | boolean |
Whether the named property is set |
---|
public function __isset($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter() !== null;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name !== null;
}
}
return false;
}
Defined in: yii\base\Component::__set()
Sets the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value
- an event in the format of "on xyz": attach the handler to the event "xyz"
- a behavior in the format of "as xyz": attach the behavior named as "xyz"
- a property of a behavior: set the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $component->property = $value;
.
See also __get().
public void __set ( $name, $value ) | ||
$name | string |
The property name or the event name |
$value | mixed |
The property value |
throws | yii\base\UnknownPropertyException |
if the property is not defined |
---|---|---|
throws | yii\base\InvalidCallException |
if the property is read-only. |
public function __set($name, $value)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
// set property
$this->$setter($value);
return;
} elseif (strncmp($name, 'on ', 3) === 0) {
// on event: attach event handler
$this->on(trim(substr($name, 3)), $value);
return;
} elseif (strncmp($name, 'as ', 3) === 0) {
// as behavior: attach behavior
$name = trim(substr($name, 3));
$this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = $value;
return;
}
}
if (method_exists($this, 'get' . $name)) {
throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property)
.
public void __unset ( $name ) | ||
$name | string |
The property name |
throws | yii\base\InvalidCallException |
if the property is read only. |
---|
public function __unset($name)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter(null);
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = null;
return;
}
}
throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}
public $this addOptions ( $options ) | ||
$options | array |
Cursor options in format: optionName => optionValue |
return | $this |
The query object itself |
---|
public function addOptions($options)
{
if (is_array($this->options)) {
$this->options = array_merge($this->options, $options);
} else {
$this->options = $options;
}
return $this;
}
Defined in: yii\db\QueryTrait::addOrderBy()
Adds additional ORDER BY columns to the query.
See also orderBy().
public $this addOrderBy ( $columns ) | ||
$columns | string|array|yii\db\ExpressionInterface |
The columns (and the directions) to be ordered by.
Columns can be specified in either a string (e.g. "id ASC, name DESC") or an array
(e.g. The method will automatically quote the column names unless a column contains some parenthesis (which means the column contains a DB expression). Note that if your order-by is an expression containing commas, you should always use an array to represent the order-by information. Otherwise, the method will not be able to correctly determine the order-by columns. Since version 2.0.7, an yii\db\ExpressionInterface object can be passed to specify the ORDER BY part explicitly in plain SQL. |
return | $this |
The query object itself |
---|
public function addOrderBy($columns)
{
$columns = $this->normalizeOrderBy($columns);
if ($this->orderBy === null) {
$this->orderBy = $columns;
} else {
$this->orderBy = array_merge($this->orderBy, $columns);
}
return $this;
}
Defined in: yii\mongodb\Query::aggregate()
Performs the aggregation for the given column.
protected integer aggregate ( $column, $operator, $db ) | ||
$column | string |
Column name. |
$operator | string |
Aggregation operator. |
$db | yii\mongodb\Connection |
The database connection used to execute the query. |
return | integer |
Aggregation result. |
---|
protected function aggregate($column, $operator, $db)
{
if (!empty($this->emulateExecution)) {
return null;
}
$this->prepare();
$collection = $this->getCollection($db);
$pipelines = [];
if ($this->where !== null) {
$pipelines[] = ['$match' => $this->where];
}
$pipelines[] = [
'$group' => [
'_id' => '1',
'total' => [
'$' . $operator => '$' . $column
],
]
];
$result = $collection->aggregate($pipelines);
if (array_key_exists(0, $result)) {
return $result[0]['total'];
}
return null;
}
Executes query and returns all results as an array.
public array|yii\mongodb\ActiveRecord all ( $db = null ) | ||
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query. If null, the Mongo connection returned by $modelClass will be used. |
return | array|yii\mongodb\ActiveRecord |
The query results. If the query results in nothing, an empty array will be returned. |
---|
public function all($db = null)
{
return parent::all($db);
}
Defined in: yii\mongodb\Query::andFilterCompare()
Helper method for easy querying on values containing some common operators.
The comparison operator is intelligently determined based on the first few characters in the given value and internally translated to a MongoDB operator. In particular, it recognizes the following operators if they appear as the leading characters in the given value: <: the column must be less than the given value ($lt). >: the column must be greater than the given value ($gt). <=: the column must be less than or equal to the given value ($lte). >=: the column must be greater than or equal to the given value ($gte). <>: the column must not be the same as the given value ($ne). Note that when $partialMatch is true, this would mean the value must not be a substring of the column. =: the column must be equal to the given value ($eq). none of the above: use the $defaultOperator
Note that when the value is empty, no comparison expression will be added to the search condition.
See also \yii\mongodb\Collection::buildCondition().
public $this andFilterCompare ( $name, $value, $defaultOperator = '=' ) | ||
$name | string |
Column name |
$value | string |
Column value |
$defaultOperator | string |
Defaults to =, performing an exact match. For example: use 'LIKE' or 'REGEX' for partial cq regex matching |
return | $this |
The query object itself. |
---|
public function andFilterCompare($name, $value, $defaultOperator = '=')
{
$matches = [];
if (preg_match('/^(<>|>=|>|<=|<|=)/', (string)$value, $matches)) {
$op = $matches[1];
$value = substr($value, strlen($op));
} else {
$op = $defaultOperator;
}
return $this->andFilterWhere([$op, $name, $value]);
}
Defined in: yii\db\QueryTrait::andFilterWhere()
Adds an additional WHERE condition to the existing one but ignores empty operands.
The new condition and the existing one will be joined using the 'AND' operator.
This method is similar to andWhere(). The main difference is that this method will remove empty query operands. As a result, this method is best suited for building query conditions based on filter values entered by users.
See also:
public $this andFilterWhere ( array $condition ) | ||
$condition | array |
The new WHERE condition. Please refer to where() on how to specify this parameter. |
return | $this |
The query object itself |
---|
public function andFilterWhere(array $condition)
{
$condition = $this->filterCondition($condition);
if ($condition !== []) {
$this->andWhere($condition);
}
return $this;
}
Defined in: yii\db\QueryTrait::andWhere()
Adds an additional WHERE condition to the existing one.
The new condition and the existing one will be joined using the 'AND' operator.
See also:
public $this andWhere ( $condition ) | ||
$condition | string|array|yii\db\ExpressionInterface |
The new WHERE condition. Please refer to where() on how to specify this parameter. |
return | $this |
The query object itself |
---|
public function andWhere($condition)
{
if ($this->where === null) {
$this->where = $condition;
} else {
$this->where = ['and', $this->where, $condition];
}
return $this;
}
Defined in: yii\db\ActiveQueryTrait::asArray()
Sets the asArray() property.
public $this asArray ( $value = true ) | ||
$value | boolean |
Whether to return the query results in terms of arrays instead of Active Records. |
return | $this |
The query object itself |
---|
public function asArray($value = true)
{
$this->asArray = $value;
return $this;
}
Defined in: yii\base\Component::attachBehavior()
Attaches a behavior to this component.
This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.
See also detachBehavior().
public yii\base\Behavior attachBehavior ( $name, $behavior ) | ||
$name | string |
The name of the behavior. |
$behavior | string|array|yii\base\Behavior |
The behavior configuration. This can be one of the following:
|
return | yii\base\Behavior |
The behavior object |
---|
public function attachBehavior($name, $behavior)
{
$this->ensureBehaviors();
return $this->attachBehaviorInternal($name, $behavior);
}
Defined in: yii\base\Component::attachBehaviors()
Attaches a list of behaviors to the component.
Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.
See also attachBehavior().
public void attachBehaviors ( $behaviors ) | ||
$behaviors | array |
List of behaviors to be attached to the component |
public function attachBehaviors($behaviors)
{
$this->ensureBehaviors();
foreach ($behaviors as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
Defined in: yii\mongodb\Query::average()
Returns the average of the specified column values.
public integer average ( $q, $db = null ) | ||
$q | string |
The column name. Make sure you properly quote column names in the expression. |
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query.
If this parameter is not given, the |
return | integer |
The average of the specified column values. |
---|
public function average($q, $db = null)
{
if (!empty($this->emulateExecution)) {
return 0;
}
return $this->aggregate($q, 'avg', $db);
}
Defined in: yii\mongodb\Query::batch()
Starts a batch query.
A batch query supports fetching data in batches, which can keep the memory usage under a limit.
This method will return a yii\mongodb\BatchQueryResult object which implements the Iterator
interface
and can be traversed to retrieve the data in batches.
For example,
$query = (new Query)->from('user');
foreach ($query->batch() as $rows) {
// $rows is an array of 10 or fewer rows from user collection
}
public yii\mongodb\BatchQueryResult batch ( $batchSize = 100, $db = null ) | ||
$batchSize | integer |
The number of records to be fetched in each batch. |
$db | yii\mongodb\Connection |
The MongoDB connection. If not set, the "mongodb" application component will be used. |
return | yii\mongodb\BatchQueryResult |
The batch query result. It implements the |
---|
public function batch($batchSize = 100, $db = null)
{
return Yii::createObject([
'class' => BatchQueryResult::className(),
'query' => $this,
'batchSize' => $batchSize,
'db' => $db,
'each' => false,
]);
}
Defined in: yii\base\Component::behaviors()
Returns a list of behaviors that this component should behave as.
Child classes may override this method to specify the behaviors they want to behave as.
The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:
'behaviorName' => [
'class' => 'BehaviorClass',
'property1' => 'value1',
'property2' => 'value2',
]
Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.
Behaviors declared in this method will be attached to the component automatically (on demand).
public array behaviors ( ) | ||
return | array |
The behavior configurations. |
---|
public function behaviors()
{
return [];
}
Defined in: yii\mongodb\Query::buildCursor()
Builds the MongoDB cursor for this query.
public \MongoDB\Driver\Cursor buildCursor ( $db = null ) | ||
$db | yii\mongodb\Connection |
The MongoDB connection used to execute the query. |
return | \MongoDB\Driver\Cursor |
Mongo cursor instance. |
---|
public function buildCursor($db = null)
{
$this->prepare();
$options = $this->options;
if (!empty($this->orderBy)) {
$options['sort'] = $this->orderBy;
}
$options['limit'] = $this->limit;
$options['skip'] = $this->offset;
$cursor = $this->getCollection($db)->find($this->composeCondition(), $this->select, $options);
return $cursor;
}
Defined in: yii\base\Component::canGetProperty()
Returns a value indicating whether a property can be read.
A property can be read if:
- the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a readable property of the given name (when
$checkBehaviors
is true).
See also canSetProperty().
public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be read |
---|
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::canSetProperty()
Returns a value indicating whether a property can be set.
A property can be written if:
- the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a writable property of the given name (when
$checkBehaviors
is true).
See also canGetProperty().
public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be written |
---|
public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
::class
instead.
Defined in: yii\base\BaseObject::className()
Returns the fully qualified name of this class.
public static string className ( ) | ||
return | string |
The fully qualified name of this class. |
---|
public static function className()
{
return get_called_class();
}
Defined in: yii\mongodb\Query::column()
Executes the query and returns the first column of the result.
Column _id
will be automatically excluded from select fields, if select() is not empty and
_id
is not selected explicitly.
public array column ( $db = null ) | ||
$db | yii\mongodb\Connection |
The MongoDB connection used to generate the query.
If this parameter is not given, the |
return | array |
The first column of the query result. An empty array is returned if the query results in nothing. |
---|
public function column($db = null)
{
if (!empty($this->emulateExecution)) {
return [];
}
$originSelect = (array)$this->select;
if (!isset($originSelect['_id']) && array_search('_id', $originSelect, true) === false) {
$this->select['_id'] = false;
}
if (is_string($this->indexBy) && $originSelect && count($originSelect) === 1) {
$this->select[] = $this->indexBy;
}
$cursor = $this->buildCursor($db);
$rows = $this->fetchRows($cursor, true);
if (empty($rows)) {
return [];
}
$results = [];
foreach ($rows as $row) {
$value = reset($row);
if ($this->indexBy === null) {
$results[] = $value;
} else {
if ($this->indexBy instanceof \Closure) {
$results[call_user_func($this->indexBy, $row)] = $value;
} else {
$results[$row[$this->indexBy]] = $value;
}
}
}
return $results;
}
Defined in: yii\mongodb\Query::count()
Returns the number of records.
public integer count ( $q = '*', $db = null ) | ||
$q | string |
Kept to match yii\db\QueryInterface, its value is ignored. |
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query.
If this parameter is not given, the |
return | integer |
Number of records |
---|---|---|
throws | yii\mongodb\Exception |
on failure. |
public function count($q = '*', $db = null)
{
if (!empty($this->emulateExecution)) {
return 0;
}
$this->prepare();
$collection = $this->getCollection($db);
return $collection->count($this->where, $this->options);
}
Defined in: yii\db\ActiveQueryTrait::createModels()
Converts found rows into model instances.
protected array|yii\db\ActiveRecord[] createModels ( $rows ) | ||
$rows | array |
protected function createModels($rows)
{
if ($this->asArray) {
return $rows;
} else {
$models = [];
/* @var $class ActiveRecord */
$class = $this->modelClass;
foreach ($rows as $row) {
$model = $class::instantiate($row);
$modelClass = get_class($model);
$modelClass::populateRecord($model, $row);
$models[] = $model;
}
return $models;
}
}
Defined in: yii\base\Component::detachBehavior()
Detaches a behavior from the component.
The behavior's yii\base\Behavior::detach() method will be invoked.
public yii\base\Behavior|null detachBehavior ( $name ) | ||
$name | string |
The behavior's name. |
return | yii\base\Behavior|null |
The detached behavior. Null if the behavior does not exist. |
---|
public function detachBehavior($name)
{
$this->ensureBehaviors();
if (isset($this->_behaviors[$name])) {
$behavior = $this->_behaviors[$name];
unset($this->_behaviors[$name]);
$behavior->detach();
return $behavior;
}
return null;
}
Defined in: yii\base\Component::detachBehaviors()
Detaches all behaviors from the component.
public void detachBehaviors ( ) |
public function detachBehaviors()
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $name => $behavior) {
$this->detachBehavior($name);
}
}
Defined in: yii\mongodb\Query::distinct()
Returns a list of distinct values for the given column across a collection.
public array distinct ( $q, $db = null ) | ||
$q | string |
Column to use. |
$db | yii\mongodb\Connection |
The MongoDB connection used to execute the query.
If this parameter is not given, the |
return | array |
Array of distinct values |
---|
public function distinct($q, $db = null)
{
if (!empty($this->emulateExecution)) {
return [];
}
$this->prepare();
$collection = $this->getCollection($db);
if ($this->where !== null) {
$condition = $this->where;
} else {
$condition = [];
}
$result = $collection->distinct($q, $condition);
if ($result === false) {
return [];
}
return $result;
}
Defined in: yii\mongodb\Query::each()
Starts a batch query and retrieves data row by row.
This method is similar to batch() except that in each iteration of the result, only one row of data is returned. For example,
$query = (new Query)->from('user');
foreach ($query->each() as $row) {
}
public yii\mongodb\BatchQueryResult each ( $batchSize = 100, $db = null ) | ||
$batchSize | integer |
The number of records to be fetched in each batch. |
$db | yii\mongodb\Connection |
The MongoDB connection. If not set, the "mongodb" application component will be used. |
return | yii\mongodb\BatchQueryResult |
The batch query result. It implements the |
---|
public function each($batchSize = 100, $db = null)
{
return Yii::createObject([
'class' => BatchQueryResult::className(),
'query' => $this,
'batchSize' => $batchSize,
'db' => $db,
'each' => true,
]);
}
Defined in: yii\db\QueryTrait::emulateExecution()
Sets whether to emulate query execution, preventing any interaction with data storage.
After this mode is enabled, methods, returning query results like yii\db\QueryInterface::one(),
yii\db\QueryInterface::all(), yii\db\QueryInterface::exists() and so on, will return empty or false values.
You should use this method in case your program logic indicates query should not return any results, like
in case you set false where condition like 0=1
.
public $this emulateExecution ( $value = true ) | ||
$value | boolean |
Whether to prevent query execution. |
return | $this |
The query object itself. |
---|
public function emulateExecution($value = true)
{
$this->emulateExecution = $value;
return $this;
}
Defined in: yii\base\Component::ensureBehaviors()
Makes sure that the behaviors declared in behaviors() are attached to this component.
public void ensureBehaviors ( ) |
public function ensureBehaviors()
{
if ($this->_behaviors === null) {
$this->_behaviors = [];
foreach ($this->behaviors() as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
}
Defined in: yii\mongodb\Query::exists()
Returns a value indicating whether the query result contains any row of data.
public boolean exists ( $db = null ) | ||
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query.
If this parameter is not given, the |
return | boolean |
Whether the query result contains any row of data. |
---|
public function exists($db = null)
{
if (!empty($this->emulateExecution)) {
return false;
}
$cursor = $this->buildCursor($db);
foreach ($cursor as $row) {
return true;
}
return false;
}
Defined in: yii\mongodb\Query::fetchRows()
Fetches rows from the given Mongo cursor.
protected array|boolean fetchRows ( $cursor, $all = true, $indexBy = null ) | ||
$cursor | \MongoDB\Driver\Cursor |
Mongo cursor instance to fetch data from. |
$all | boolean |
Whether to fetch all rows or only first one. |
$indexBy | string|callable |
The column name or PHP callback, by which the query results should be indexed by. |
return | array|boolean |
Result. |
---|---|---|
throws | yii\mongodb\Exception |
on failure. |
protected function fetchRows($cursor, $all = true, $indexBy = null)
{
$token = 'fetch cursor id = ' . $cursor->getId();
Yii::info($token, __METHOD__);
try {
Yii::beginProfile($token, __METHOD__);
$result = $this->fetchRowsInternal($cursor, $all);
Yii::endProfile($token, __METHOD__);
return $result;
} catch (\Exception $e) {
Yii::endProfile($token, __METHOD__);
throw new Exception($e->getMessage(), (int) $e->getCode(), $e);
}
}
protected array|boolean fetchRowsInternal ( $cursor, $all ) | ||
$cursor | \MongoDB\Driver\Cursor |
Mongo cursor instance to fetch data from. |
$all | boolean |
Whether to fetch all rows or only first one. |
return | array|boolean |
Result. |
---|
protected function fetchRowsInternal($cursor, $all)
{
$result = [];
if ($all) {
foreach ($cursor as $row) {
$result[] = $row;
}
} else {
if ($row = current($cursor->toArray())) {
$result = $row;
} else {
$result = false;
}
}
return $result;
}
Defined in: yii\db\QueryTrait::filterCondition()
Removes empty operands from the given query condition.
protected array filterCondition ( $condition ) | ||
$condition | array |
The original condition |
return | array |
The condition with empty operands removed. |
---|---|---|
throws | yii\base\NotSupportedException |
if the condition operator is not supported |
protected function filterCondition($condition)
{
if (!is_array($condition)) {
return $condition;
}
if (!isset($condition[0])) {
// hash format: 'column1' => 'value1', 'column2' => 'value2', ...
foreach ($condition as $name => $value) {
if ($this->isEmpty($value)) {
unset($condition[$name]);
}
}
return $condition;
}
// operator format: operator, operand 1, operand 2, ...
$operator = array_shift($condition);
switch (strtoupper($operator)) {
case 'NOT':
case 'AND':
case 'OR':
foreach ($condition as $i => $operand) {
$subCondition = $this->filterCondition($operand);
if ($this->isEmpty($subCondition)) {
unset($condition[$i]);
} else {
$condition[$i] = $subCondition;
}
}
if (empty($condition)) {
return [];
}
break;
case 'BETWEEN':
case 'NOT BETWEEN':
if (array_key_exists(1, $condition) && array_key_exists(2, $condition)) {
if ($this->isEmpty($condition[1]) || $this->isEmpty($condition[2])) {
return [];
}
}
break;
default:
if (array_key_exists(1, $condition) && $this->isEmpty($condition[1])) {
return [];
}
}
array_unshift($condition, $operator);
return $condition;
}
Defined in: yii\db\QueryTrait::filterWhere()
Sets the WHERE part of the query but ignores empty operands.
This method is similar to where(). The main difference is that this method will remove empty query operands. As a result, this method is best suited for building query conditions based on filter values entered by users.
The following code shows the difference between this method and where():
// WHERE `age`=:age
$query->filterWhere(['name' => null, 'age' => 20]);
// WHERE `age`=:age
$query->where(['age' => 20]);
// WHERE `name` IS NULL AND `age`=:age
$query->where(['name' => null, 'age' => 20]);
Note that unlike where(), you cannot pass binding parameters to this method.
See also:
public $this filterWhere ( array $condition ) | ||
$condition | array |
The conditions that should be put in the WHERE part. See where() on how to specify this parameter. |
return | $this |
The query object itself |
---|
public function filterWhere(array $condition)
{
$condition = $this->filterCondition($condition);
if ($condition !== []) {
$this->where($condition);
}
return $this;
}
Defined in: yii\db\ActiveRelationTrait::findFor()
Finds the related records for the specified primary record.
This method is invoked when a relation of an ActiveRecord is being accessed lazily.
public mixed findFor ( $name, $model ) | ||
$name | string |
The relation name |
$model | yii\db\ActiveRecordInterface|yii\db\BaseActiveRecord |
The primary model |
return | mixed |
The related record(s) |
---|---|---|
throws | yii\base\InvalidArgumentException |
if the relation is invalid |
public function findFor($name, $model)
{
if (method_exists($model, 'get' . $name)) {
$method = new \ReflectionMethod($model, 'get' . $name);
$realName = lcfirst(substr($method->getName(), 3));
if ($realName !== $name) {
throw new InvalidArgumentException('Relation names are case sensitive. ' . get_class($model) . " has a relation named \"$realName\" instead of \"$name\".");
}
}
return $this->multiple ? $this->all() : $this->one();
}
Defined in: yii\db\ActiveQueryTrait::findWith()
Finds records corresponding to one or multiple relations and populates them into the primary models.
public void findWith ( $with, &$models ) | ||
$with | array |
A list of relations that this query should be performed with. Please refer to with() for details about specifying this parameter. |
$models | array|yii\db\ActiveRecord[] |
The primary models (can be either AR instances or arrays) |
public function findWith($with, &$models)
{
if (empty($models)) {
return;
}
$primaryModel = reset($models);
if (!$primaryModel instanceof ActiveRecordInterface) {
/* @var $modelClass ActiveRecordInterface */
$modelClass = $this->modelClass;
$primaryModel = $modelClass::instance();
}
$relations = $this->normalizeRelations($primaryModel, $with);
/* @var $relation ActiveQuery */
foreach ($relations as $name => $relation) {
if ($relation->asArray === null) {
// inherit asArray from primary query
$relation->asArray($this->asArray);
}
$relation->populateRelation($name, $models);
}
}
Defined in: yii\mongodb\Query::from()
Sets the collection to be selected from.
public $this from ( $collection ) | ||
$collection | ||
return | $this |
The query object itself. |
---|
public function from($collection)
{
$this->from = $collection;
return $this;
}
Defined in: yii\base\Component::getBehavior()
Returns the named behavior object.
public yii\base\Behavior|null getBehavior ( $name ) | ||
$name | string |
The behavior name |
return | yii\base\Behavior|null |
The behavior object, or null if the behavior does not exist |
---|
public function getBehavior($name)
{
$this->ensureBehaviors();
return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
Defined in: yii\base\Component::getBehaviors()
Returns all behaviors attached to this component.
public yii\base\Behavior[] getBehaviors ( ) | ||
return | yii\base\Behavior[] |
List of behaviors attached to this component |
---|
public function getBehaviors()
{
$this->ensureBehaviors();
return $this->_behaviors;
}
Returns the Mongo collection for this query.
public yii\mongodb\Collection getCollection ( $db = null ) | ||
$db | yii\mongodb\Connection |
Mongo connection. |
return | yii\mongodb\Collection |
Collection instance. |
---|
public function getCollection($db = null)
{
/* @var $modelClass ActiveRecord */
$modelClass = $this->modelClass;
if ($db === null) {
$db = $modelClass::getDb();
}
if ($this->from === null) {
$this->from = $modelClass::collectionName();
}
return $db->getCollection($this->from);
}
Defined in: yii\base\Component::hasEventHandlers()
Returns a value indicating whether there is any handler attached to the named event.
public boolean hasEventHandlers ( $name ) | ||
$name | string |
The event name |
return | boolean |
Whether there is any handler attached to the event. |
---|
public function hasEventHandlers($name)
{
$this->ensureBehaviors();
if (!empty($this->_events[$name])) {
return true;
}
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
return true;
}
}
return Event::hasHandlers($this, $name);
}
Defined in: yii\base\Component::hasMethod()
Returns a value indicating whether a method is defined.
A method is defined if:
- the class has a method with the specified name
- an attached behavior has a method with the given name (when
$checkBehaviors
is true).
public boolean hasMethod ( $name, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkBehaviors | boolean |
Whether to treat behaviors' methods as methods of this component |
return | boolean |
Whether the method is defined |
---|
public function hasMethod($name, $checkBehaviors = true)
{
if (method_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->hasMethod($name)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::hasProperty()
Returns a value indicating whether a property is defined for this component.
A property is defined if:
- the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVars
is true); - an attached behavior has a property of the given name (when
$checkBehaviors
is true).
See also:
public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property is defined |
---|
public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
Defined in: yii\db\QueryTrait::indexBy()
Sets the indexBy() property.
public $this indexBy ( $column ) | ||
$column | string|callable |
The name of the column by which the query results should be indexed by. This can also be a callable (e.g. anonymous function) that returns the index value based on the given row data. The signature of the callable should be:
|
return | $this |
The query object itself |
---|
public function indexBy($column)
{
$this->indexBy = $column;
return $this;
}
Initializes the object.
This method is called at the end of the constructor. The default implementation will trigger an EVENT_INIT event. If you override this method, make sure you call the parent implementation at the end to ensure triggering of the event.
public void init ( ) |
public function init()
{
parent::init();
$this->trigger(self::EVENT_INIT);
}
Defined in: yii\db\ActiveRelationTrait::inverseOf()
Sets the name of the relation that is the inverse of this relation.
For example, a customer has orders, which means the inverse of the "orders" relation is the "customer".
If this property is set, the primary record(s) will be referenced through the specified relation.
For example, $customer->orders[0]->customer
and $customer
will be the same object,
and accessing the customer of an order will not trigger a new DB query.
Use this method when declaring a relation in the yii\db\ActiveRecord class, e.g. in Customer model:
public function getOrders()
{
return $this->hasMany(Order::class, ['customer_id' => 'id'])->inverseOf('customer');
}
This also may be used for Order model, but with caution:
public function getCustomer()
{
return $this->hasOne(Customer::class, ['id' => 'customer_id'])->inverseOf('orders');
}
in this case result will depend on how order(s) was loaded. Let's suppose customer has several orders. If only one order was loaded:
$orders = Order::find()->where(['id' => 1])->all();
$customerOrders = $orders[0]->customer->orders;
variable $customerOrders
will contain only one order. If orders was loaded like this:
$orders = Order::find()->with('customer')->where(['customer_id' => 1])->all();
$customerOrders = $orders[0]->customer->orders;
variable $customerOrders
will contain all orders of the customer.
public $this inverseOf ( $relationName ) | ||
$relationName | string |
The name of the relation that is the inverse of this relation. |
return | $this |
The relation object itself. |
---|
public function inverseOf($relationName)
{
$this->inverseOf = $relationName;
return $this;
}
Defined in: yii\db\QueryTrait::isEmpty()
Returns a value indicating whether the give value is "empty".
The value is considered "empty", if one of the following conditions is satisfied:
- it is
null
, - an empty string (
''
), - a string containing only whitespace characters,
- or an empty array.
protected boolean isEmpty ( $value ) | ||
$value | mixed | |
return | boolean |
If the value is empty |
---|
protected function isEmpty($value)
{
return $value === '' || $value === [] || $value === null || is_string($value) && trim($value) === '';
}
Defined in: yii\db\QueryTrait::limit()
Sets the LIMIT part of the query.
public $this limit ( $limit ) | ||
$limit | integer|yii\db\ExpressionInterface|null |
The limit. Use null or negative value to disable limit. |
return | $this |
The query object itself |
---|
public function limit($limit)
{
$this->limit = $limit;
return $this;
}
Defined in: yii\mongodb\Query::max()
Returns the maximum of the specified column values.
public integer max ( $q, $db = null ) | ||
$q | string |
The column name. Make sure you properly quote column names in the expression. |
$db | yii\mongodb\Connection |
The MongoDB connection used to execute the query.
If this parameter is not given, the |
return | integer |
The maximum of the specified column values. |
---|
public function max($q, $db = null)
{
return $this->aggregate($q, 'max', $db);
}
Defined in: yii\mongodb\Query::min()
Returns the minimum of the specified column values.
public integer min ( $q, $db = null ) | ||
$q | string |
The column name. Make sure you properly quote column names in the expression. |
$db | yii\mongodb\Connection |
The MongoDB connection used to execute the query.
If this parameter is not given, the |
return | integer |
The minimum of the specified column values. |
---|
public function min($q, $db = null)
{
return $this->aggregate($q, 'min', $db);
}
Performs 'findAndModify' query and returns a single row of result.
Warning: in case 'new' option is set to 'false' (which is by default) usage of this method may lead to unexpected behavior at some Active Record features, because object will be populated by outdated data.
public yii\mongodb\ActiveRecord|array|null modify ( $update, $options = [], $db = null ) | ||
$update | array |
Update criteria |
$options | array |
List of options in format: optionName => optionValue. |
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query. |
return | yii\mongodb\ActiveRecord|array|null |
The original document, or the modified document when $options['new'] is set. Depending on the setting of asArray(), the query result may be either an array or an ActiveRecord object. Null will be returned if the query results in nothing. |
---|
public function modify($update, $options = [], $db = null)
{
$row = parent::modify($update, $options, $db);
if ($row !== null) {
$models = $this->populate([$row]);
return reset($models) ?: null;
}
return null;
}
Defined in: yii\db\QueryTrait::normalizeOrderBy()
Normalizes format of ORDER BY data.
protected array normalizeOrderBy ( $columns ) | ||
$columns | array|string|yii\db\ExpressionInterface|null |
The columns value to normalize. See orderBy() and addOrderBy(). |
protected function normalizeOrderBy($columns)
{
if (empty($columns)) {
return [];
} elseif ($columns instanceof ExpressionInterface) {
return [$columns];
} elseif (is_array($columns)) {
return $columns;
}
$columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY);
$result = [];
foreach ($columns as $column) {
if (preg_match('/^(.*?)\s+(asc|desc)$/i', $column, $matches)) {
$result[$matches[1]] = strcasecmp($matches[2], 'desc') ? SORT_ASC : SORT_DESC;
} else {
$result[$column] = SORT_ASC;
}
}
return $result;
}
Defined in: yii\base\Component::off()
Detaches an existing event handler from this component.
This method is the opposite of on().
Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.
See also on().
public boolean off ( $name, $handler = null ) | ||
$name | string |
Event name |
$handler | callable|null |
The event handler to be removed. If it is null, all handlers attached to the named event will be removed. |
return | boolean |
If a handler is found and detached |
---|
public function off($name, $handler = null)
{
$this->ensureBehaviors();
if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
return false;
}
if ($handler === null) {
unset($this->_events[$name], $this->_eventWildcards[$name]);
return true;
}
$removed = false;
// plain event names
if (isset($this->_events[$name])) {
foreach ($this->_events[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_events[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_events[$name] = array_values($this->_events[$name]);
return true;
}
}
// wildcard event names
if (isset($this->_eventWildcards[$name])) {
foreach ($this->_eventWildcards[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_eventWildcards[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
// remove empty wildcards to save future redundant regex checks:
if (empty($this->_eventWildcards[$name])) {
unset($this->_eventWildcards[$name]);
}
}
}
return $removed;
}
Defined in: yii\db\QueryTrait::offset()
Sets the OFFSET part of the query.
public $this offset ( $offset ) | ||
$offset | integer|yii\db\ExpressionInterface|null |
The offset. Use null or negative value to disable offset. |
return | $this |
The query object itself |
---|
public function offset($offset)
{
$this->offset = $offset;
return $this;
}
Defined in: yii\base\Component::on()
Attaches an event handler to an event.
The event handler must be a valid PHP callback. The following are some examples:
function ($event) { ... } // anonymous function
[$object, 'handleClick'] // $object->handleClick()
['Page', 'handleClick'] // Page::handleClick()
'handleClick' // global function handleClick()
The event handler must be defined with the following signature,
function ($event)
where $event
is an yii\base\Event object which includes parameters associated with the event.
Since 2.0.14 you can specify event name as a wildcard pattern:
$component->on('event.group.*', function ($event) {
Yii::trace($event->name . ' is triggered.');
});
See also off().
public void on ( $name, $handler, $data = null, $append = true ) | ||
$name | string |
The event name |
$handler | callable |
The event handler |
$data | mixed |
The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data. |
$append | boolean |
Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list. |
public function on($name, $handler, $data = null, $append = true)
{
$this->ensureBehaviors();
if (strpos($name, '*') !== false) {
if ($append || empty($this->_eventWildcards[$name])) {
$this->_eventWildcards[$name][] = [$handler, $data];
} else {
array_unshift($this->_eventWildcards[$name], [$handler, $data]);
}
return;
}
if ($append || empty($this->_events[$name])) {
$this->_events[$name][] = [$handler, $data];
} else {
array_unshift($this->_events[$name], [$handler, $data]);
}
}
Executes query and returns a single row of result.
public yii\mongodb\ActiveRecord|array|null one ( $db = null ) | ||
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query. If null, the Mongo connection returned by $modelClass will be used. |
return | yii\mongodb\ActiveRecord|array|null |
A single row of query result. Depending on the setting of asArray(), the query result may be either an array or an ActiveRecord object. Null will be returned if the query results in nothing. |
---|
public function one($db = null)
{
$row = parent::one($db);
if ($row !== false) {
$models = $this->populate([$row]);
return reset($models) ?: null;
}
return null;
}
public $this options ( $options ) | ||
$options | array |
Cursor options in format: optionName => optionValue |
return | $this |
The query object itself |
---|
public function options($options)
{
$this->options = $options;
return $this;
}
Defined in: yii\db\QueryTrait::orFilterWhere()
Adds an additional WHERE condition to the existing one but ignores empty operands.
The new condition and the existing one will be joined using the 'OR' operator.
This method is similar to orWhere(). The main difference is that this method will remove empty query operands. As a result, this method is best suited for building query conditions based on filter values entered by users.
See also:
public $this orFilterWhere ( array $condition ) | ||
$condition | array |
The new WHERE condition. Please refer to where() on how to specify this parameter. |
return | $this |
The query object itself |
---|
public function orFilterWhere(array $condition)
{
$condition = $this->filterCondition($condition);
if ($condition !== []) {
$this->orWhere($condition);
}
return $this;
}
Defined in: yii\db\QueryTrait::orWhere()
Adds an additional WHERE condition to the existing one.
The new condition and the existing one will be joined using the 'OR' operator.
See also:
public $this orWhere ( $condition ) | ||
$condition | string|array|yii\db\ExpressionInterface |
The new WHERE condition. Please refer to where() on how to specify this parameter. |
return | $this |
The query object itself |
---|
public function orWhere($condition)
{
if ($this->where === null) {
$this->where = $condition;
} else {
$this->where = ['or', $this->where, $condition];
}
return $this;
}
Defined in: yii\db\QueryTrait::orderBy()
Sets the ORDER BY part of the query.
See also addOrderBy().
public $this orderBy ( $columns ) | ||
$columns | string|array|yii\db\ExpressionInterface|null |
The columns (and the directions) to be ordered by.
Columns can be specified in either a string (e.g. The method will automatically quote the column names unless a column contains some parenthesis (which means the column contains a DB expression). Note that if your order-by is an expression containing commas, you should always use an array to represent the order-by information. Otherwise, the method will not be able to correctly determine the order-by columns. Since version 2.0.7, an yii\db\ExpressionInterface object can be passed to specify the ORDER BY part explicitly in plain SQL. |
return | $this |
The query object itself |
---|
public function orderBy($columns)
{
$this->orderBy = $this->normalizeOrderBy($columns);
return $this;
}
Converts the raw query results into the format as specified by this query.
This method is internally used to convert the data fetched from MongoDB into the format as required by this query.
public array populate ( $rows ) | ||
$rows | array |
The raw query result from MongoDB |
return | array |
The converted query result |
---|
public function populate($rows)
{
if (empty($rows)) {
return [];
}
$models = $this->createModels($rows);
if (!empty($this->with)) {
$this->findWith($this->with, $models);
}
if (!$this->asArray) {
foreach ($models as $model) {
$model->afterFind();
}
}
return parent::populate($models);
}
Defined in: yii\db\ActiveRelationTrait::populateRelation()
Finds the related records and populates them into the primary models.
public array populateRelation ( $name, &$primaryModels ) | ||
$name | string |
The relation name |
$primaryModels | array |
Primary models |
return | array |
The related models |
---|---|---|
throws | yii\base\InvalidConfigException |
if $link is invalid |
public function populateRelation($name, &$primaryModels)
{
if (!is_array($this->link)) {
throw new InvalidConfigException('Invalid link: it must be an array of key-value pairs.');
}
if ($this->via instanceof self) {
// via junction table
/* @var $viaQuery ActiveRelationTrait */
$viaQuery = $this->via;
$viaModels = $viaQuery->findJunctionRows($primaryModels);
$this->filterByModels($viaModels);
} elseif (is_array($this->via)) {
// via relation
/* @var $viaQuery ActiveRelationTrait|ActiveQueryTrait */
list($viaName, $viaQuery) = $this->via;
if ($viaQuery->asArray === null) {
// inherit asArray from primary query
$viaQuery->asArray($this->asArray);
}
$viaQuery->primaryModel = null;
$viaModels = array_filter($viaQuery->populateRelation($viaName, $primaryModels));
$this->filterByModels($viaModels);
} else {
$this->filterByModels($primaryModels);
}
if (!$this->multiple && count($primaryModels) === 1) {
$model = $this->one();
$primaryModel = reset($primaryModels);
if ($primaryModel instanceof ActiveRecordInterface) {
$primaryModel->populateRelation($name, $model);
} else {
$primaryModels[key($primaryModels)][$name] = $model;
}
if ($this->inverseOf !== null) {
$this->populateInverseRelation($primaryModels, [$model], $name, $this->inverseOf);
}
return [$model];
}
// https://github.com/yiisoft/yii2/issues/3197
// delay indexing related models after buckets are built
$indexBy = $this->indexBy;
$this->indexBy = null;
$models = $this->all();
if (isset($viaModels, $viaQuery)) {
$buckets = $this->buildBuckets($models, $this->link, $viaModels, $viaQuery);
} else {
$buckets = $this->buildBuckets($models, $this->link);
}
$this->indexBy = $indexBy;
if ($this->indexBy !== null && $this->multiple) {
$buckets = $this->indexBuckets($buckets, $this->indexBy);
}
$link = array_values($this->link);
if (isset($viaQuery)) {
$deepViaQuery = $viaQuery;
while ($deepViaQuery->via) {
$deepViaQuery = is_array($deepViaQuery->via) ? $deepViaQuery->via[1] : $deepViaQuery->via;
};
$link = array_values($deepViaQuery->link);
}
foreach ($primaryModels as $i => $primaryModel) {
$keys = null;
if ($this->multiple && count($link) === 1) {
$primaryModelKey = reset($link);
$keys = isset($primaryModel[$primaryModelKey]) ? $primaryModel[$primaryModelKey] : null;
}
if (is_array($keys)) {
$value = [];
foreach ($keys as $key) {
$key = $this->normalizeModelKey($key);
if (isset($buckets[$key])) {
if ($this->indexBy !== null) {
// if indexBy is set, array_merge will cause renumbering of numeric array
foreach ($buckets[$key] as $bucketKey => $bucketValue) {
$value[$bucketKey] = $bucketValue;
}
} else {
$value = array_merge($value, $buckets[$key]);
}
}
}
} else {
$key = $this->getModelKey($primaryModel, $link);
$value = isset($buckets[$key]) ? $buckets[$key] : ($this->multiple ? [] : null);
}
if ($primaryModel instanceof ActiveRecordInterface) {
$primaryModel->populateRelation($name, $value);
} else {
$primaryModels[$i][$name] = $value;
}
}
if ($this->inverseOf !== null) {
$this->populateInverseRelation($primaryModels, $models, $name, $this->inverseOf);
}
return $models;
}
Prepares for query building.
This method is called before actual query composition, e.g. building cursor, count etc. You may override this method to do some final preparation work before query execution.
public $this prepare ( ) | ||
return | $this |
A prepared query instance. |
---|
public function prepare()
{
if ($this->primaryModel !== null) {
// lazy loading
if ($this->via instanceof self) {
// via pivot collection
$viaModels = $this->via->findJunctionRows([$this->primaryModel]);
$this->filterByModels($viaModels);
} elseif (is_array($this->via)) {
// via relation
/* @var $viaQuery ActiveQuery */
list($viaName, $viaQuery) = $this->via;
if ($viaQuery->multiple) {
$viaModels = $viaQuery->all();
$this->primaryModel->populateRelation($viaName, $viaModels);
} else {
$model = $viaQuery->one();
$this->primaryModel->populateRelation($viaName, $model);
$viaModels = $model === null ? [] : [$model];
}
$this->filterByModels($viaModels);
} else {
$this->filterByModels([$this->primaryModel]);
}
}
return parent::prepare();
}
Defined in: yii\mongodb\Query::scalar()
Returns the query result as a scalar value.
The value returned will be the first column in the first row of the query results.
Column _id
will be automatically excluded from select fields, if select() is not empty and
_id
is not selected explicitly.
public string|null|false scalar ( $db = null ) | ||
$db | yii\mongodb\Connection |
The MongoDB connection used to generate the query.
If this parameter is not given, the |
return | string|null|false |
The value of the first column in the first row of the query result.
|
---|
public function scalar($db = null)
{
if (!empty($this->emulateExecution)) {
return null;
}
$originSelect = (array)$this->select;
if (!isset($originSelect['_id']) && array_search('_id', $originSelect, true) === false) {
$this->select['_id'] = false;
}
$cursor = $this->buildCursor($db);
$row = $this->fetchRows($cursor, false);
if (empty($row)) {
return false;
}
return reset($row);
}
Defined in: yii\mongodb\Query::select()
Sets the list of fields of the results to return.
public $this select ( array $fields ) | ||
$fields | array |
Fields of the results to return. |
return | $this |
The query object itself. |
---|
public function select(array $fields)
{
$this->select = $fields;
return $this;
}
Defined in: yii\mongodb\Query::sum()
Returns the sum of the specified column values.
public integer sum ( $q, $db = null ) | ||
$q | string |
The column name. Make sure you properly quote column names in the expression. |
$db | yii\mongodb\Connection |
The Mongo connection used to execute the query.
If this parameter is not given, the |
return | integer |
The sum of the specified column values |
---|
public function sum($q, $db = null)
{
if (!empty($this->emulateExecution)) {
return 0;
}
return $this->aggregate($q, 'sum', $db);
}
Defined in: yii\base\Component::trigger()
Triggers an event.
This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.
public void trigger ( $name, yii\base\Event $event = null ) | ||
$name | string |
The event name |
$event | yii\base\Event|null |
The event instance. If not set, a default yii\base\Event object will be created. |
public function trigger($name, Event $event = null)
{
$this->ensureBehaviors();
$eventHandlers = [];
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (StringHelper::matchWildcard($wildcard, $name)) {
$eventHandlers[] = $handlers;
}
}
if (!empty($this->_events[$name])) {
$eventHandlers[] = $this->_events[$name];
}
if (!empty($eventHandlers)) {
$eventHandlers = call_user_func_array('array_merge', $eventHandlers);
if ($event === null) {
$event = new Event();
}
if ($event->sender === null) {
$event->sender = $this;
}
$event->handled = false;
$event->name = $name;
foreach ($eventHandlers as $handler) {
$event->data = $handler[1];
call_user_func($handler[0], $event);
// stop further handling if the event is handled
if ($event->handled) {
return;
}
}
}
// invoke class-level attached handlers
Event::trigger($this, $name, $event);
}
Defined in: yii\db\ActiveRelationTrait::via()
Specifies the relation associated with the junction table.
Use this method to specify a pivot record/table when declaring a relation in the yii\db\ActiveRecord class:
class Order extends ActiveRecord
{
public function getOrderItems() {
return $this->hasMany(OrderItem::class, ['order_id' => 'id']);
}
public function getItems() {
return $this->hasMany(Item::class, ['id' => 'item_id'])
->via('orderItems');
}
}
public $this via ( $relationName, callable $callable = null ) | ||
$relationName | string |
The relation name. This refers to a relation declared in $primaryModel. |
$callable | callable|null |
A PHP callback for customizing the relation associated with the junction table.
Its signature should be |
return | $this |
The relation object itself. |
---|
public function via($relationName, callable $callable = null)
{
$relation = $this->primaryModel->getRelation($relationName);
$callableUsed = $callable !== null;
$this->via = [$relationName, $relation, $callableUsed];
if ($callable !== null) {
call_user_func($callable, $relation);
}
return $this;
}
Defined in: yii\db\QueryTrait::where()
Sets the WHERE part of the query.
See yii\db\QueryInterface::where() for detailed documentation.
See also:
public $this where ( $condition ) | ||
$condition | string|array|yii\db\ExpressionInterface |
The conditions that should be put in the WHERE part. |
return | $this |
The query object itself |
---|
public function where($condition)
{
$this->where = $condition;
return $this;
}
Defined in: yii\db\ActiveQueryTrait::with()
Specifies the relations with which this query should be performed.
The parameters to this method can be either one or multiple strings, or a single array of relation names and the optional callbacks to customize the relations.
A relation name can refer to a relation defined in $modelClass
or a sub-relation that stands for a relation of a related record.
For example, orders.address
means the address
relation defined
in the model class corresponding to the orders
relation.
The following are some usage examples:
// find customers together with their orders and country
Customer::find()->with('orders', 'country')->all();
// find customers together with their orders and the orders' shipping address
Customer::find()->with('orders.address')->all();
// find customers together with their country and orders of status 1
Customer::find()->with([
'orders' => function (\yii\db\ActiveQuery $query) {
$query->andWhere('status = 1');
},
'country',
])->all();
You can call with()
multiple times. Each call will add relations to the existing ones.
For example, the following two statements are equivalent:
Customer::find()->with('orders', 'country')->all();
Customer::find()->with('orders')->with('country')->all();
public $this with ( ) | ||
return | $this |
The query object itself |
---|
public function with()
{
$with = func_get_args();
if (isset($with[0]) && is_array($with[0])) {
// the parameter is given as an array
$with = $with[0];
}
if (empty($this->with)) {
$this->with = $with;
} elseif (!empty($with)) {
foreach ($with as $name => $value) {
if (is_int($name)) {
// repeating relation is fine as normalizeRelations() handle it well
$this->with[] = $value;
} else {
$this->with[$name] = $value;
}
}
}
return $this;
}
Event Details
An event that is triggered when the query is initialized via init().