Yii2 dropdown list selected value

Question

I don’t understand how dropdown list works. I want to take selected value from dropdown list.

My code looks like:

<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]) ?>
     <?= $form->field($model1, 'test')->dropDownList($items)->label(false);?>

    <button>Submit</button>
    <?php ActiveForm::end() ?>

where $items =[‘A’,‘B’,‘C’…‘Z’];

And the default displayed value for this is ‘A’, i want to change this value.

I’ve tried with $model1->test, but this is not my selected value.

Thanks!

Serghei Leonenco · Accepted Answer · 2019-06-17 20:42:30Z

4

If you need to make a prompt:

<?= $form->field($model, 'test')->dropDownList($items
    , 'prompt' => ' -- Select Value --']) ?>

If another scenario Lets say you chose to select 'B' from your array:

$items =[‘A’,‘B’,‘C’…‘Z’];

the key of 'B' is 1 so you need to do this:

<?= $form->field($model, 'test')->dropDownList($items)
,['options' => [1 => ['Selected'=>'selected']]
, 'prompt' => ' -- Select Value --']) ?>

answered Jun 17, 2019 at 20:42

Serghei Leonenco

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Comments

user206 · Accepted Answer · 2019-06-18 01:02:43Z

In ActiveForm, your model field value is selected as the value.
In Html, there is another property that you can set the default value

You can use the activeDropDownList() in HTML for the given model attribute.

syntax in Yii2 ActiveForm :

<?= Html::field($yourModel, 'name_field_db')->dropDownList(
        [items-array of data],
        [options]
    ); ?>

syntax HTML:

<?= Html::dropDownList($name, $selection = null, $items = [], $options = []) ?>

data as array:

<?= $form->field($model, 'name')->dropDownList(['1' => 'on', '0' => 'off'],['prompt'=>'Select Option']); ?>

display the database data in the dropdownList via ArrayHelper::map.

    // get fields from database for make itemList
    $yourModels=model::find()->all(); // Query(by Active record or Query Builder or ..)

    $itemList=ArrayHelper::map($yourModels,'filed_id','filed-name');

    echo $form->field($newModel, 'filed-name')->dropDownList($itemList,['prompt'=>'Please select']);

Can for ActiveForm: $model->field = $model->isNewRecord? 'value' : $model->field;

Prathap Goud Gantena · Accepted Answer · 2019-06-18 12:00:52Z

0

Use the following code you should change ModelName to your model class name, it will be work.

<?= $form->field($model, 'test')
      ->dropDownList(ArrayHelper::map(app\models\ModelName::find()->all(),'id','test'))
 ?>

answered Jun 18, 2019 at 12:00

Prathap Goud Gantena

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