In Yii2, data providers are helper classes that are used to extract data via Query Builder to be passed to a data widget. The benefit of using data providers and data widgets over queries built via Query Builder is that they provide an interface to automatically deal with sorting and pagination.
The most common way to work with data providers is to use the
yii\data\ActiveDataProvider class. Typically,
yii\data\ActiveDataProvider will be used with Active Record models:
$provider = new ActiveDataProvider([ 'query' => User::find(), 'pagination' => [ 'pageSize' => 20, ], ]);
We'll cover how to create and use Active Record and models in Chapter 4, Active Record, Models, and Forms.
Active data providers can also be populated ...