Default DropDownList

Yii2.0 default dropdownlist syntaxt.

1	<?php echo $form->field($model, 'name[]')->dropDownList(['a' => 'Item A', 'b' => 'Item B', 'c' =>'Item C']); ?>

DropDownList With Prompt Text

Yii2.0 default dropdownlist syntaxt with prompt text like default text value.

1	<php echo $form->field($model, 'name[]')->dropDownList($listData,

2	['prompt'=>'Select...']);>

DropDownList With Model (DB) Data

Using below code, we can display the database value (via model) in dropdownlist of yii2.0 framework.

01

<?php

02	//use app\models\Country;

03	$countries=Country::find()->all();

04

05	//use yii\helpers\ArrayHelper;

06	$listData=ArrayHelper::map($countries,'code','name');

07

08	echo $form->field($model, 'name')->dropDownList(

09	$listData,

10	['prompt'=>'Select...']);

11

?>

Default Selection DropDownList Yii2

Using below code, we can set the default value for dropdownlist of yii2.0 framework. When we create the new entry for country population, we will try to set the value to auto select of dropDownList. During the updation it will fetch the country code automatically from db record. Please see the below code to get it.

Controller Code

01

<??php

02	...................

03	public function actionCreate()

04

{

05	$model = new Population();

06	// Default Selection for country code

07	$model->country='IN';

08	if ($model->load(Yii::$app->request->post()) && $model->save()) {

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

10

} else {

11	return $this->render('create', [

12	'model' => $model,

13

]);

14

}

15

}

16	public function actionUpdate($id)

17

{

18	$model = $this->findModel($id);

19	return $this->render('update', [

20	'model' => $model,

21

]);

22

}

23	...................

24

?>

Create/Update Form Code

view source

print?

01

<??php

02	use yii\helpers\Html;

03	use yii\widgets\ActiveForm;

04	use yii\helpers\ArrayHelper;

05

?>

06

07	<?div class="population-form">

08	<??php $form = ActiveForm::begin(); ?>

09	...................

10

<??php

11	//$model->name='IN';

12	$listData=ArrayHelper::map($countries,'code','name');

13	echo $form->field($model, 'name')->dropDownList($listData, ['prompt'=>'Choose...']);

14

?>

15	...................

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

17

<?/div>

Yii2.0 DropDownList