Question

我有两个表table1和table2，每个表都有一个名为email的列以及不同的其他列。我想要的是一个验证器，它在两列的email字段中查找唯一性。我找到了一个extension来检查 SAME 表的多列。如何扩展它以使其适用于多列？

Answer 1

您可以使用className属性为其他类指定..

文档： the ActiveRecord class name that should be used to look for the attribute value being validated. Defaults to null, meaning using the class of the object currently being validated. You may use path alias to reference a class name here.

让我们在两个模型中有一个名为common_attr的属性：

class Model1 extends CActiveRecord{
    public function rules(){
        array('common_attr', 'unique', 'className'=> 'Model1'),
        array('common_attr', 'unique', 'className'=> 'Model2'),
    }
}

class Model2 extends CActiveRecord{
    public function rules(){
        array('common_attr', 'unique', 'className'=> 'Model1'),
        array('common_attr', 'unique', 'className'=> 'Model2'),
    }
}

要检查多个表中的combined key验证，您可以使用CUniqueValidator的criteria属性.. 不需要任何扩展

文档：criteria property public array $criteria; additional query criteria. This will be combined with the condition that checks if the attribute value exists in the corresponding table column. This array will be used to instantiate a CDbCriteria object.

class Model1 extends CActiveRecord{

    public function rules(){
        array('common_attr', 'unique', 'caseSensitive'=>false,
                   'criteria'=>array(
            'join'=>'LEFT JOIN model2 ON model2.common_attr=model1.common_attr',
                            'condition'=>'model2.common_attr=model1.common_attr',
        )),
    }
}

Answer 2

在 Yii2

简短：

['common_attr', 'unique'],
['common_attr', 'unique', 'targetClass' => AnotherClass::class],

详细：

class One extends \yii\db\ActiveRecord
{
    public function rules()
    {
        return [
            ['common_attr', 'unique'],
            ['common_attr', 'unique', 'targetClass' => Two::class],
        ];
    }
}

class Two extends \yii\db\ActiveRecord
{
    public function rules()
    {
        return [
            ['common_attr', 'unique'],
            ['common_attr', 'unique', 'targetClass' => One::class],
        ];
    }
}

此外，您可以将多个唯一键与targetAttribute一起使用：

[
    'common_attr', 
    'unique', 
    'targetClass' => One::class, 
    'targetAttribute' => ['common_attr', 'one_more_attr']
]

Yii对两列不同表的唯一验证即。复合唯一验证

2 个答案: