行为创建属性的验证规则 [英] Validation rules on behavior-created attributes

问题描述

我有一个模型，其中包含两个必须唯一的值.Yii2 对此有一个验证规则:

I have a model with two values that has to be unique together. Yii2 has a validation rule for this:

[['object_id', 'created_by'], 'unique', 'targetAttribute' => ['object_id', 'created_by']]

created_by 属性是用可指责的行为生成的:

The created_by attribute is generated with blameable behavior:

public function behaviors()
{
    return [
        'blameable' => [
            'class' => BlameableBehavior::className(),
            'createdByAttribute' => 'created_by',
            'updatedByAttribute' => 'updated_by',
        ],
    ];
}

在将行为输入存储在模型中之前完成验证.(我知道这一点，因为如果规则中需要 created_by，模型将不会保存 - 验证错误.)

The validating is done before the behavior input is stored in the model. (I know this, because if created_by is required in the rules, the model will not save - validation error.)

是否有一种好的 yii2 方法来验证这样的行为生成的属性?

Is there a good yii2-way to validate a behavior-generated attribute like this?

推荐答案

您可以使用行为的 'attributes' 属性指定将在其上创建属性的事件，因此您可以像这样修改您的模型:

You can specify the events that the attributes will be created on by using the 'attributes' property of the behavior, so you can amend your model like this:

public function behaviors()
{
    return [
        'blameable' => [
            'class' => BlameableBehavior::className(),
            'createdByAttribute' => 'created_by',
            'updatedByAttribute' => 'updated_by',
            'attributes' => [
                ActiveRecord::EVENT_BEFORE_VALIDATE => ['updated_by', 'created_by']
            ]
        ],
    ];
}

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