Class yii\db\CheckConstraint
| 继承 | yii\db\CheckConstraint » yii\db\Constraint » yii\base\BaseObject |
|---|---|
| 实现 | yii\base\Configurable |
| 可用版本自 | 2.0.13 |
| 源码 | https://github.com/yiichina/yii2/blob/api/framework/db/CheckConstraint.php |
CheckConstraint 表示表 CHECK 约束的元数据。
公共属性
| 属性 | 类型 | 描述 | 被定义在 |
|---|---|---|---|
| $columnNames | string[]|null | 约束所属的列名列表。 | yii\db\Constraint |
| $expression | string | CHECK 约束的 SQL。 |
yii\db\CheckConstraint |
| $name | string|null | 约束名称。 | yii\db\Constraint |
公共方法
| 方法 | 描述 | 被定义在 |
|---|---|---|
| __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 |