Yii2 dropdown selected value - yii2

Question

I want to show selected value in Yii2 dropdown,
$_GET Value:
$id = $_GET["cid"];
Drop down code
$form->field($model, 'userid')
->dropDownList(
[User::getUser()],
//[ArrayHelper::map(User::findAll(['active' => '1']), 'id', 'name')],
['prompt'=>'Select a user','id'=>'user_dropdown'],
['options' =>
[
$id => ['selected' => true]
]
]
)->label('');
but this method is not working!

Answer 1

Try this.
$model->userid=$id;
$form->field($model, 'userid')
->dropDownList(...)
->label('');

Answer 2

Basically, you affect the options (your <option> elements) by using the value attribute's actual value as the array key in the dropDownList options array.
So in this case I have an array of states and the value attributes have the state abbreviation, for example value="FL". I'm getting my selected state from the Address table, which stores the abbreviation, so all I have to do is use that as my array key in the options array:
echo $form->field($model, 'state')->dropDownList($listData, ['prompt'=>'Select...', 'options'=>[$address->state=>["Selected"=>true]]]);
The documentation spells it out: http://www.yiiframework.com/doc-2.0/yii-helpers-basehtml.html#dropDownList()-detail

Answer 3

i hope this will help you
$form->field($model, 'userid')
->dropDownList(
[User::getUser()],
//[ArrayHelper::map(User::find()->where('id' => $id)->all(), 'id', 'name')],
['prompt'=>'Select a user','id'=>'user_dropdown'],
['options' =>
[
$id => ['selected' => true]
]
]
)->label('');

Answer 4

$model->userid = $_GET['cid'];
$form->field($model, 'userid')
->dropDownList(
$items, //Flat array('id'=>'val')
['prompt'=>''] //options
)->label('');

Answer 5

<?php
$selectValue = $_GET['tid']
echo $form->field($model, 'tag_id')
->dropdownList(
ArrayHelper::map(Tag::find()->where(['visibility'=>'1'])->orderBy('value ASC')->all(), 'tag_id', 'value'),
['options' => [$selectValue => ['Selected'=>'selected']]],
['prompt' => '-- Select Tag --'])
->label(false);
?>
This code will Auto Select the selected value received as input.
Where $selectValue will be numeric value received from GET method.
Final output : <option value="14" selected="selected">NONE</option>

Answer 6

Ok, if you are using ActiveForm then value of your model field will be used as the selected value. With Html helper dropDownList function accepts another parameter selection doc. Example:
$id = $_GET["cid"];
\yii\helpers\Html::dropDownList('userid', $id, [ArrayHelper::map(User::findAll(['active' => '1']), 'id', 'name'), [......])

Answer 7

This is my S.O.L.I.D approach.
Controller
$model = new User();
$model->userid = $id; #this line does the magick. Make sure the $id has a value, so do the if else here.
return $this->return('view', compact('model'))
But, if you prefer the setter method. Do this...
# Model
class User extends ActiveRecord
{
public function setUserId(int $userId): void
{
$this->userid = $userId;
}
}
# Controller
$model = new User();
$model->setUserId($userId);
View (view is as-is)
$form->field($model, 'userid')
->dropDownList(...)
->label('');

Answer 8

Use this code below:
$category = \backend\models\ProductCategory::find()->WHERE(['deleted'=>'N'])->all();
$listData = ArrayHelper::map($category,'product_category_id','category_name');
echo $form->field($model, 'product_category_id')->dropDownList($listData,['prompt'=>'Select']);

Answer 9

All of the options I've added are unrequired.
What is written in the 'value' index is what dropdown item will be selected as default.
Prompt just displays a first option that doesn't have a value associated with it.
echo $form->field($model, 'model_attribute_name')
->dropDownList($associativeArrayValueToText,
[
'value'=> $valueIWantSelected,
'prompt' => 'What I want as a placeholder for first option',
'class' => 'classname'
]);
You'll find the function that assigns this in the following file:
vendor/yiisoft/yii2/helpers/BaseHtml.php
public static function renderSelectOptions($selection, $items, &$tagOptions = [])
Also from the function you can see that you can add an optgroup to your dropdown, you just need to supply a multidimensional array in where I've put $associativeArrayValueToText. This just means that you can split your options by introducing group headings to the dropdown.