yii2 自定义验证不起作用

Question

我需要比较模型中的 2 个属性值，只有当第一个值低于第二个值形式时，才能 validate.I 尝试使用下面的代码，但它不起作用。

控制器

public function actionOpanningBalance(){

     $model = new Bill();
     if ($model->load(Yii::$app->request->post())) {
        $model->created_at = \Yii::$app->user->identity->id;
        $model->save();
      }else{
       return $this->render('OpanningBalance', [
            'model' => $model,
        ]);
     } 
}

型号

public function rules()
{
    return [
        [['outlet_id', 'sr_id', 'bill_number', 'bill_date', 'created_at', 'created_date','bill_amount','credit_amount'], 'required'],
        [['outlet_id', 'sr_id', 'created_at', 'updated_at'], 'integer'],
        [['bill_date', 'd_slip_date', 'cheque_date', 'created_date', 'updated_date','status'], 'safe'],
        [['bill_amount', 'cash_amount', 'cheque_amount', 'credit_amount'], 'number'],
        [['comment'], 'string'],
        ['credit_amount',function compareValue($attribute,$param){
               if($this->$attribute > $this->bill_amount){
               $this->addError($attribute, 'Credit amount should less than Bill amount');
    }],           
        [['bill_number', 'd_slip_no', 'bank', 'branch'], 'string', 'max' => 225],
        [['cheque_number'], 'string', 'max' => 100],
        [['bill_number'], 'unique']
    ];
}
}

它进入了验证器函数，但没有像我想要的那样添加错误

$this->addError($attribute, 'Credit amount should less than Bill amount');

谁能帮我解决这个问题？

Answer 1

试试这个：

public function actionOpanningBalance(){

 $model = new Bill();
 if ($model->load(Yii::$app->request->post()) && $model->validate()) {
    $model->created_at = \Yii::$app->user->identity->id;
    $model->save();
  }else{
   return $this->render('OpanningBalance', [
        'model' => $model,
    ]);
 } 
}

验证

你可以使用匿名函数:

['credit_amount',function ($attribute, $params) {
            if ($this->$attribute > $this->bill_amount)) {
                $this->addError($attribute, 'Credit amount should less than Bill amount.');
              return false;
            }
        }],

Answer 2

你可以像下面这样使用答案也写

public function rules(){
    return [
        ['credit_amount','custom_function_validation', 'on' =>'scenario'];
}
public function custom_function_validation($attribute){
    // add custom validation
    if ($this->$attribute < $this->cash_amount) 
        $this->addError($attribute,'Credit amount should less than Bill amount.');
}

Answer 3

如果验证没有添加任何错误，则很可能被跳过了。这个问题很可能是因为默认规则行为，它跳过空的或已经错误的给定值，如下所示：https://www.yiiframework.com/doc/guide/2.0/en/input-validation#inline-validators

具体来说：

By default, inline validators will not be applied if their associated attributes receive empty inputs or if they have already failed some validation rules. If you want to make sure a rule is always applied, you may configure the skipOnEmpty and/or skipOnError properties to be false in the rule declarations.

因此您需要根据适合您的情况设置 skipOnEmpty 或 skipOnError 值：

[
    ['country', 'validateCountry', 'skipOnEmpty' => false, 'skipOnError' => false],
]

Answer 4

我已经 custom_function_validation 像这样使用第 3 个参数工作：

public function is18yo($attribute, $params, $validator)
{
    $dobDate = new DateTime($this->$attribute);
    $now = new DateTime();
    if ($now->diff($dobDate)->y < 18) {
        $validator->addError($this, $attribute, 'At least 18 years old');
        return false;
    }
}

Answer 5

这是后端验证，只会在提交时触发。所以你可以在你的验证函数中尝试这样的事情。

if (!$this->hasErrors()) {
  // Your validation code goes here.
}

如果您查看生成的 basic Yii2 应用程序，您可以在文件 models/LoginForm.php 中看到该示例，其中有一个名为 validatePassword.

的函数

只有在提交表单后才会触发验证。

yii2 自定义验证不起作用

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