Yii2 dropdown multiple selected values

Question

I used Yii2 multiple selection dropdown , it is working fine at create but not showing me selected values on update!

Form:

       $form->field($model, 'categories[]')            
         ->dropDownList($model->CategoryDropdown,
         [
          'multiple'=>'multiple'
          'class'=>'chosen-select input-md required',              
         ]             
        )->label("Add Categories");

Model:

public function getCategoryDropdown()
{
        $listCategory   = Category::find()->select('ID,name')
            ->where(['is_subcategory' => 'Yes'])
            ->andWhere(['status' => 'active','approved' => 'active'])
            ->all();
        $list   = ArrayHelper::map( $listCategory,'ID','name');

        return $list;
}

Controller:

 public function actionCreate(){
 ...
     $model->categories = implode(",",$_POST['Company']['categories']);
    ...
    return $this->render('create', [
            'model' => $model,           
        ]);
 }

public function actionUpdate($id)
{
    $model = $this->findModel($id);    

    echo $model->categories; //  1,2,4,5  values already assigned
    ...
    return $this->render('update', [
                'model' => $model,                    
            ]); 
  }

Database:

1,2,4,5

How I can show multi selected values in dropdown when I update my recored?

no logic used in update action but I'm updating my question. — Muhammad Shahzad
– Muhammad Shahzad, Commented Oct 29, 2015 at 6:39
is there any option? to explode these values in dropdown? like: dropDownList($model, 'categories', ''explode(",",$model->categories), — Muhammad Shahzad
– Muhammad Shahzad, Commented Oct 29, 2015 at 6:45
I got the solution, just removed '[]' from $form->field($model, 'categories[]') replaced with $form->field($model, 'categories') , it is working now. — Muhammad Shahzad
– Muhammad Shahzad, Commented Oct 29, 2015 at 7:25

Deep Kakkar · Accepted Answer · 2017-02-10 15:47:53Z

14

all your code is ok just need echo your $form->...

echo $form->field($model, 'categories[]')            
     ->dropDownList($model->CategoryDropdown,
     [
      'multiple'=>'multiple',
      'class'=>'chosen-select input-md required',              
     ]             
    )->label("Add Categories");

or use <?= ?> in view!

edited Feb 10, 2017 at 15:47

Deep Kakkar

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answered Oct 29, 2015 at 6:52

Mohsen

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2 Comments

Mohsen Over a year ago

You should use $form->field($Item, 'categories')->listBox($dropdown_data);

Muhammad Shahzad Over a year ago

I should need to use listBox.

Muhammad Shahzad · Accepted Answer · 2015-10-29 07:31:28Z

2

Here is solution:

Form

 <?= 
  $form->field($model, 'categories')            
         ->dropDownList($model->CategoryDropdown,
         [
          'class'=>'chosen-select input-md required',
          'multiple'=>'multiple'              
         ]             
        )->label("Add Categories");
 ?>

Controller:

 public function actionCreate(){
 ...
     $model->categories = implode(",",$_POST['Company']['categories']);
    ...
    return $this->render('create', [
            'model' => $model,           
        ]);
 }

public function actionUpdate($id)
{
    $model = $this->findModel($id); 
    $model->categories = explode(',', $model->categories);        
    ...
    if($model->load(Yii::$app->request->post()))
    {
         $model->categories = implode(",",$_POST['Company']['categories']);    
         ...
         $model->save()
    }
    return $this->render('update', [
                'model' => $model,                    
            ]); 
  }

answered Oct 29, 2015 at 7:31

Muhammad Shahzad

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2 Comments

Nana Partykar Over a year ago

@Shahzad Bhai, How To Show Selected Values In Dropdown (Which Is Multi Select). Do You Have Any Idea Or Any Link.? Means, Whatever Values I Selected From Multi Select Dropdown, I wanted Those Values While Updating Time.

Muhammad Shahzad Over a year ago

@NanaPartykar I have used a single column in db like category and store values comma separated 4,3,6,5 and I have used bootstrap chosen-select in my form, and above code was working fine for me.

WardNsour · Accepted Answer · 2021-01-28 09:46:52Z

1

I would highly recommend to use Select2 from krajee it has all the options that you might need, using multiple in dropDownList() will make you able to choose multiple values but by pressing and holding Ctrl and choosing which is not comfortable as choosing them using Select2.

They did an amazing job i highly recommend anyone with this problem to use it.

Please check the documentations. https://demos.krajee.com/widget-details/select2

answered Jan 28, 2021 at 9:46

WardNsour

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