Interface yii\base\StaticInstanceInterface
| Implemented by | yii\base\DynamicModel, yii\base\Model, yii\data\ActiveDataFilter, yii\data\DataFilter, yii\db\ActiveRecord, yii\db\ActiveRecordInterface, yii\db\BaseActiveRecord, yii\debug\models\Router, yii\debug\models\UserSwitch, yii\debug\models\search\Base, yii\debug\models\search\Db, yii\debug\models\search\Debug, yii\debug\models\search\Event, yii\debug\models\search\Log, yii\debug\models\search\Mail, yii\debug\models\search\Profile, yii\debug\models\search\User, yii\debug\models\timeline\Search, yii\elasticsearch\ActiveRecord, yii\gii\Generator, yii\gii\generators\controller\Generator, yii\gii\generators\crud\Generator, yii\gii\generators\extension\Generator, yii\gii\generators\form\Generator, yii\gii\generators\model\Generator, yii\gii\generators\module\Generator, yii\httpclient\debug\SearchModel, yii\mongodb\ActiveRecord, yii\mongodb\file\ActiveRecord, yii\mongodb\gii\model\Generator, yii\queue\gii\Generator, yii\redis\ActiveRecord |
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| Available since version | 2.0.13 |
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StaticInstanceInterface is the interface for providing static instances to classes,
which can be used to obtain class meta information that can not be expressed in static methods.
For example: adjustments made by DI or behaviors reveal only at object level, but might be needed
at class (static) level as well.
To implement the instance() method you may use yii\base\StaticInstanceTrait.
请参阅 yii\base\StaticInstanceTrait.
方法详情 Method Details
Returns static class instance, which can be used to obtain meta information.
| public abstract static static instance ( $refresh = false ) |
| $refresh |
boolean |
Whether to re-create static instance even, if it is already cached.
|
| return |
static |
Class instance.
|