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Class yii\data\ActiveDataProvider

Inheritanceyii\data\ActiveDataProvider » yii\data\BaseDataProvider » yii\base\Component » yii\base\BaseObject
Implementsyii\base\Configurable, yii\data\DataProviderInterface
Available since version2.0
Source Code https://github.com/yiisoft/yii2/blob/master/framework/data/ActiveDataProvider.php

ActiveDataProvider implements a data provider based on yii\db\Query and yii\db\ActiveQuery.

ActiveDataProvider provides data by performing DB queries using $query.

The following is an example of using ActiveDataProvider to provide ActiveRecord instances:

$provider = new ActiveDataProvider([
    'query' => Post::find(),
    'pagination' => [
        'pageSize' => 20,
    ],
]);

// get the posts in the current page
$posts = $provider->getModels();

And the following example shows how to use ActiveDataProvider without ActiveRecord:

$query = new Query();
$provider = new ActiveDataProvider([
    'query' => $query->from('post'),
    'pagination' => [
        'pageSize' => 20,
    ],
]);

// get the posts in the current page
$posts = $provider->getModels();

For more details and usage information on ActiveDataProvider, see the guide article on data providers.

Public Properties

Hide inherited properties

PropertyTypeDescriptionDefined By
$behaviors yii\base\Behavior[] List of behaviors attached to this component yii\base\Component
$count integer The number of data models in the current page. yii\data\BaseDataProvider
$db yii\db\Connection|array|string The DB connection object or the application component ID of the DB connection. yii\data\ActiveDataProvider
$id string An ID that uniquely identifies the data provider among all data providers. yii\data\BaseDataProvider
$key string|callable The column that is used as the key of the data models. yii\data\ActiveDataProvider
$keys array The list of key values corresponding to $models. yii\data\BaseDataProvider
$models array The list of data models in the current page. yii\data\BaseDataProvider
$pagination yii\data\Pagination|false The pagination object. yii\data\BaseDataProvider
$query yii\db\QueryInterface The query that is used to fetch data models and $totalCount if it is not explicitly set. yii\data\ActiveDataProvider
$sort yii\data\Sort|boolean The sorting object. yii\data\BaseDataProvider
$totalCount integer Total number of possible data models. yii\data\BaseDataProvider

Public Methods

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MethodDescriptionDefined By
__call() Calls the named method which is not a class method. yii\base\Component
__clone() This method is called after the object is created by cloning an existing one. yii\base\Component
__construct() Constructor. yii\base\BaseObject
__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
attachBehavior() Attaches a behavior to this component. yii\base\Component
attachBehaviors() Attaches a list of behaviors to the component. yii\base\Component
behaviors() Returns a list of behaviors that this component should behave as. yii\base\Component
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
detachBehavior() Detaches a behavior from the component. yii\base\Component
detachBehaviors() Detaches all behaviors from the component. yii\base\Component
ensureBehaviors() Makes sure that the behaviors declared in behaviors() are attached to this component. yii\base\Component
getBehavior() Returns the named behavior object. yii\base\Component
getBehaviors() Returns all behaviors attached to this component. yii\base\Component
getCount() Returns the number of data models in the current page. yii\data\BaseDataProvider
getKeys() Returns the key values associated with the data models. yii\data\BaseDataProvider
getModels() Returns the data models in the current page. yii\data\BaseDataProvider
getPagination() Returns the pagination object used by this data provider. yii\data\BaseDataProvider
getSort() Returns the sorting object used by this data provider. yii\data\BaseDataProvider
getTotalCount() Returns the total number of data models. yii\data\BaseDataProvider
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
init() Initializes the DB connection component. yii\data\ActiveDataProvider
off() Detaches an existing event handler from this component. yii\base\Component
on() Attaches an event handler to an event. yii\base\Component
prepare() Prepares the data models and keys. yii\data\BaseDataProvider
refresh() Refreshes the data provider. yii\data\BaseDataProvider
setKeys() Sets the key values associated with the data models. yii\data\BaseDataProvider
setModels() Sets the data models in the current page. yii\data\BaseDataProvider
setPagination() Sets the pagination for this data provider. yii\data\BaseDataProvider
setSort() {@inheritdoc} yii\data\ActiveDataProvider
setTotalCount() Sets the total number of data models. yii\data\BaseDataProvider
trigger() Triggers an event. yii\base\Component

Property Details

$db public property

The DB connection object or the application component ID of the DB connection. If not set, the default DB connection will be used. Starting from version 2.0.2, this can also be a configuration array for creating the object.

$key public property

The column that is used as the key of the data models. This can be either a column name, or a callable that returns the key value of a given data model.

If this is not set, the following rules will be used to determine the keys of the data models:

See also getKeys().

public string|callable $key null
$query public property

The query that is used to fetch data models and $totalCount if it is not explicitly set.

Method Details

init() public method

Initializes the DB connection component.

This method will initialize the $db property to make sure it refers to a valid DB connection.

public void init ( )
throws yii\base\InvalidConfigException

if $db is invalid.

prepareKeys() protected method

{@inheritdoc}

protected void prepareKeys ( $models )
$models
prepareModels() protected method

{@inheritdoc}

protected void prepareModels ( )
prepareTotalCount() protected method

{@inheritdoc}

protected void prepareTotalCount ( )
setSort() public method

{@inheritdoc}

public void setSort ( $value )
$value