Class yii\db\Constraint
| Inheritance | yii\db\Constraint » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable |
| Subclasses | yii\db\CheckConstraint, yii\db\DefaultValueConstraint, yii\db\ForeignKeyConstraint, yii\db\IndexConstraint |
| Available since version | 2.0.13 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/db/Constraint.php |
Constraint represents the metadata of a table constraint.
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| $columnNames | string[]|null | List of column names the constraint belongs to. | yii\db\Constraint |
| $name | string|null | The constraint name. | yii\db\Constraint |
Public Methods
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\BaseObject |
| __construct() | Constructor. | yii\base\BaseObject |
| __get() | Returns the value of an object property. | yii\base\BaseObject |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\BaseObject |
| __set() | Sets value of an object property. | yii\base\BaseObject |
| __unset() | Sets an object property to null. | yii\base\BaseObject |
| canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\BaseObject |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\BaseObject |
| className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
| hasMethod() | Returns a value indicating whether a method is defined. | yii\base\BaseObject |
| hasProperty() | Returns a value indicating whether a property is defined. | yii\base\BaseObject |
| init() | Initializes the object. | yii\base\BaseObject |