Question

如果很明显，我很抱歉。所以，我想不同的规则取决于用户选择的内容。我有一个更新表格：

<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]); ?>

<?= $form->field($model, 'news_title')->textInput(['maxlength' => true]) ?>

<?= $form->field($model, 'news_content')->textarea(['rows' => 6]) ?>

<?= $form->field($model, 'check')->label('Picture update:')
        ->radioList(
                [ 2 => 'Yes', 1 => 'No', 0 => 'Delete']) ?>

<?= $form->field($model, 'file')->fileInput() ?>

<div class="form-group">
    <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
</div>

<?php ActiveForm::end(); ?>

并且只有当radioList的值为'2'时，我才想要fileInput。我的意思是如果用户选择1 =＆gt; '不'，或0 =＆gt; '删除'fielInput可以为空。

public function rules() {
    return [
        [['news_content'], 'string'],
        [['news_content'], 'required'],
        [['created_at', 'updated_at'], 'safe'],
        [['news_title', 'news_picture', 'created_by', 'updated_by'], 'string', 'max' => 255],
        [['news_title'], 'required'],
        [['news_picture'], 'required'],
        [['file'], 'file', 'skipOnEmpty' => $this->checkRadio(), 'extensions' => 'png, jpg',],
        [['check'], 'required', 'message' => 'Please ....'],
    ];
}
public function checkRadio() {
    if ($this->check == 2) {
        return false;
    } else {
        return true;
    }
}

我试着在模型中编写一个函数，但是$ check变量总是有0值，我真的不明白为什么。 Yii2中有没有解决方案？

Answer 1

这是documentation这是非常直接的，但这样的事情就足够了

[
    'file', 'required',
    'when' => function ($model) {
        return $model->check == 2;
    },
    'whenClient' => "function (attribute, value) {
                return $('#signupform-check-2').is(':checked');
    }",
    'message' => 'Please....'
]

只要启用了客户端验证，您就必须进行两次检查。后端和前端。

Answer 2

***********  Your Controller Like This ***********************

 public function actionCreate(){
    $model = new Model();
    if(Yii::$app->request->post())
    {
     if($model->check ==2)
       {
        $model->scenario ='fileInputRequired';
       }
        else{
           $model->scenario ='fileInputNotRequired';
            }
    }
   if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
 }


********** Your Model Like This *****************

public function rules() {
    return [

        [['news_content','news_title','news_picture','check'], 'required'],
        [['news_content'], 'string'],
        [['created_at', 'updated_at'], 'safe'],
        [['news_title', 'news_picture', 'created_by', 'updated_by'], 'string', 'max' => 255],
        [['file'], 'file', 'on' =>'fileInputRequired', 'extensions' => 'png, jpg',],
       ];
}
 function scenario()
{
    return [
        'fileInputRequired' => ['news_content', 'news_picture', 'news_title','file','check'];
        'fileInputNotRequired' => ['news_content', 'news_picture','news_title','check'];
}

如何在yii2中制定不同的规则取决于radiobutton值？

2 个答案: