Yii提供了一组封装了分页和排序数据提供程序类。数据提供者实现了 yii\data\DataProviderInterface 接口。它支持检索排序和分页数据。数据提供者通常是窗口小部件一起使用。 Yii 包括:
public function actionTest()
{
$query = User::find();
$provider = new ActiveDataProvider([
'query' => $query,
'pagination' => [
'pageSize' => 2,
],
]);
// returns an array of users objects
$users = $provider->getModels();
var_dump($users);
}
yii\data\SqlDataProvider 类是使用原始的SQL语句方式工作的。
public function actionTest()
{
$count = Yii::$app->db->createCommand('SELECT COUNT(*) FROM user')->queryScalar();
$provider = new SqlDataProvider([
'sql' => 'SELECT * FROM user',
'totalCount' => $count,
'pagination' => [
'pageSize' => 5,
],
'sort' => [
'attributes' => [
'id',
'name',
'email',
],
],
]);
// returns an array of data rows
$users = $provider->getModels();
var_dump($users);
}
public function actionTest()
{
$data = User::find()->asArray()->all();
$provider = new ArrayDataProvider([
'allModels' => $data,
'pagination' => [
'pageSize' => 3,
],
'sort' => [
'attributes' => ['id', 'name'],
],
]);
// get the rows in the currently requested page
$users = $provider->getModels();
var_dump($users);
}
(完)