如何從Select2 Widget將多個值保存到數據庫Yii2

Question

我正在使用kartik - yii2-widget-select2來允許在窗體中創建時選擇多個選項。

我想輸入兩行或多行到數據庫，具體取決於在select2小部件中選擇的選項數量。

表單中的select2小部件如下所示。

<?= $form->field($model, 'Assign_task_to')->widget(Select2::classname(), 
//$data = ArrayHelper::map(Employee::find()->all(),'Employee_ID','employee_name'), 
[ 
'data' => ArrayHelper::map(Employee::find()->all(),'Employee_ID','employee_name'), 
'language' => 'en', 
'options' => ['placeholder' => 'Select an employee ...', 'multiple' => true], 
'pluginOptions' => [ 
    'allowClear' => true 
], 
]); ?> 

控制器actionCreate如下。

public function actionCreate() 
{ 

    // set default values 
    $empModel = new Tasksemp(); 
    $model = new Tasks(); 
    $model->priotiy_level = 'medium'; 
    $model->start_date = date('Y-m-d'); //to get default date 
    if ($model->load(Yii::$app->request->post())) { 


     //Check if field input is empty 

     $model->file = UploadedFile::getInstance($model, 'upload_documents'); 


     if($model->file) 
     { 
      //get instance of uploaded file 
      $fName = time(); 
      $model->file = UploadedFile::getInstance($model, 'upload_documents'); 
      $model->file->saveAs('uploads/'.$fName.'.'.$model->file->extension); 

      $model->upload_documents = 'uploads/'.$fName.'.'.$model->file->extension; 
     } 



     $model->save(); 

     //to save in task_emp table 

      $empModel->Task_ID = $model->Task_ID; 
      $empModel->Employee_ID = $model->Assign_task_to; //<---want to save multiple employee IDs with the same Task ID (multiple rows) 
      $empModel->save(false); 
      return $this->redirect(['view', 'id' => $model->Task_ID]);  

    } else { 
     return $this->render('create', [ 
      'model' => $model, 
      'emp' => $empModel, 
     ]); 
    } 
} 

如何將兩個或多個值保存到數據庫？如何迭代或如何知道選擇了多少個值，以便我可以使用循環插入？

有人可以幫我或給任何建議嗎？謝謝

Answer 1

添加foreach到項目保存到數據庫

public function actionCreate() 
    { 

     // set default values 
     $empModel = new Tasksemp(); 
     $model = new Tasks(); 
     $model->priotiy_level = 'medium'; 
     $model->start_date = date('Y-m-d'); //to get default date 
     if ($model->load(Yii::$app->request->post())) { 


      //Check if field input is empty 

      $model->file = UploadedFile::getInstance($model, 'upload_documents'); 


      if($model->file) 
      { 
       //get instance of uploaded file 
       $fName = time(); 
       $model->file = UploadedFile::getInstance($model, 'upload_documents'); 
       $model->file->saveAs('uploads/'.$fName.'.'.$model->file->extension); 

       $model->upload_documents = 'uploads/'.$fName.'.'.$model->file->extension; 
      } 


      $model->save(); 

      //to save in task_emp table 

       $array=$model->Assign_task_to; 
       foreach ($array as $value) { 
        $empModel = new Tasksemp(); 
        $empModel->Task_ID = $model->Task_ID; 
        $empModel->Employee_ID = $value; 
        $empModel->save(false); 
        } 

       return $this->redirect(['view', 'id' => $model->Task_ID]);  

     } else { 
      return $this->render('create', [ 
       'model' => $model, 
       'emp' => $empModel, 
      ]); 
     } 
    }