Question

我正在尝试将数据插入数据库以使用yii2。它运作良好但我每次都有一点问题插入它进入数据库，该字段变空。但是当我刷新它再次回到数据库。每次刷新它都会再次向数据库添加相同的数据，我不知道为什么。

是我的控制器类

   public function actionCompose() {

        $topic = new Topic();
        $topic->load($_POST);
        $topic->save();

        return $this->render('compose');
    }

这是我的视图类compose.php

<?php $form = ActiveForm::begin(); ?>
<input type="name"  class="form-control"  required="true" name="Topic[topic]" id="topic" placeholder="topic">
<textarea type="name"  cols="30" rows="10"  class="form-control"  required="true" name="Topic[about]" id="" placeholder="about"></textarea>
<input type="name" class="form-control"  required="true" name="Topic[category]" id="category" placeholder="category">

<?= Html::submitButton('Save', ['class' => 'btn btn-primary', 'name' => 'login-button']) ?>   
<?php ActiveForm::end(); ?>

Answer 1

您的代码存在以下问题：

public function actionCompose()
{
    $topic= new Topic(); 
    //assuming post() request
    if($topic->load(Yii::$app->request->post()) && $topic->validate()){
     //save() must be after validate() 
     $topic->save();
    }

    return $this->render('compose');
}

如果仍然发生，请在您的帖子模型中提供验证规则

Answer 2

我认为你应该在保存发布之前检查你的模型，否则不要！

public function actionCompose() {
    $topic = new Topic();
    if($topic->load(Yii::$app->request->post())) {
        $topic->save();
    }

    return $this->render('compose');
}

Answer 3

您没有检查该请求是POST还是正常请求。

public function actionCompose()
{
   $topic= new Topic(); 

    // POST request
    if ($topic->load(Yii::$app->request->post())) 
    {
        $topic->load($_POST);
        $topic->save();

        return $this->redirect(['index']); // change name as yours
    }
    else  // Not a form submission
    {
      return $this->render('compose', [
          'model' => $topic, // change name as yours
            ]);
    }
}

Answer 4

我修改了它我需要添加return return $this->refresh();

 public function actionCompose()
    {
     $topic= new Topic(); 

        if ($topic->load(Yii::$app->request->post()) && $topic->validate()) {
            $topic->load($_POST);
        $topic->save();
        return $this->refresh();
           }
           return $this->render('compose');
    }

如何在yii2中正确插入？

4 个答案: