Yii2 规则 compareAttribute 与另一个模型的属性进行比较 [英] Yii2 rules compareAttribute compare with attribute of another model

问题描述

在验证期间，我想与另一个模型的属性进行比较.是否可以?如果是，如果您能指出我正确的方向，我将不胜感激.我想象以某种方式访问​​模型 A 中的模型 B，但也许我的逻辑不好，我不知道如何实现这一点.谢谢.

during validation I would like to compare with an attribute from another model. Is it possible? If yes, I would be grateful if you would point me to the right direction. I imagine it somehow to access model B in model A, but maybe my logic is not good, and I have no clue how can this be achieved. Thanks.

推荐答案

我是这样解决的:

public function getRelatedmodel() {
    return $this->hasOne(\app\models\Relatedmodel::className(), ['id' => 'relatedId']);
}

public function getMotherRelatedAttribute() {
    if ($mother = Model::findOne($this->mother)) {
        return $mother->relatedmodel->attribute;
    }
}

在规则中:

['attribute', 'compare', 'compareAttribute' => 'MotherRelatedAttribute', 'operator' => '<=', 'on' => self::SCENARIO_CREATE_RST],

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