Add custom field in the view of yii2 which is not in model

Question

I am getting a problem while saving a form in yii2.

I have created a custom field with name like other fields Myposts['categoryLevel2']. This field is not in model. It is a conditional field. When I post my from I assign its value to a model attribute Like:

$categoryLevel3 = $request->post('categoryLevel3');
if(!empty($categoryLevel3)){
    $model->category=$categoryLevel3;
}

Now because categoryLevel3 is not there in table post so it is giving error. Getting unknown property: frontend\models\Posts I know the issue. The error is because in $_POST array there is a field categoryLevel3 now and it is not in table so $model->save() is throwing exception. I tried unset($_POST['categoryLevel3')) but that also did not work. Can anyone help me on this?

How can I create a filed in view which is not in table and ignore it before $model->save?

Answer 1

Add Public property 'categoryLevel3 in Your Post Model Class.

 class Post extends yii\db\ActiveRecord{
   public $categoryLevel3;

   public function rules(){

       return [

          [''categoryLevel3' , 'required']
   ...
           ];

     }
   }