Yii2, Set multiple Value Select2 - php

Question

I have load select2 data like this :
$data = ArrayHelper::map(ContactGroups::find()->where(['group_status'=>'ACTIVE'])->asArray()->all(),'group_id', 'group_name');
echo $form->field($model, 'group_id')->widget(Select2::classname(), [
'data' => $data,
'model' => $model,
'language' => 'en',
'options' => ['placeholder' => Yii::t('modules','Pilih Kelompok')],
'pluginOptions' => [
'allowClear' => true,
'multiple' => true,
],
])->label('Kelompok');
$data variable returning result :
Array
(
[1] => Tanpa Kategori
[3] => Bisnis
[4] => Kawan
[5] => Bisnis Kerang
[6] => Bisnis Selang
[99] => Keluarga
)
and select2 working properly, but I can't show selected value or initial value. is I've missed something ?

Answer 1

you add tags property in pluginOptions for multiple selection like....
$data = ArrayHelper::map(ContactGroups::find()->where(['group_status'=>'ACTIVE'])->asArray()->all(),'group_id', 'group_name');
foreach($data as $d)
$row[]=$d;
echo $form->field($model, 'group_id')->widget(Select2::classname(), [
'language' => 'en',
'name' => 'group_id[]',
'options' => ['placeholder' => ''],
'pluginOptions' => [
'tags' => $row,
'allowClear' => true,
'multiple' => true
],
])->label('Kelompok');
You show Demo

Answer 2

Try using like this.. At the time of updating we need to take already selected values in 1 variable and all values in 1 variable.. and send this to select2.
$query = NewsTags::find()->where(['news_id' => $model->id])->all();
$services = array();
$services_id_list = array();
foreach ($query as $ds) {
$tag_id = $ds->tag_id;
$tag_name = Tags::findOne($tag_id)->tag_name;
$services[$ds->tag_id] = $tag_name;
array_push($services_id_list, $ds->tag_id);
}
$data= ArrayHelper::map(Tags::find()->where([])->all(),'id','tag_name');
echo Select2::widget([
'name' => 'NewsTags[tag_id][]',
'id' => 'newstags-tag_id',
'value' => $services_id_list,
'data' => $data,
'maintainOrder' => true,
'options' => [
'placeholder' => 'Select a Service ...',
'multiple' => true
],
'pluginOptions' => [
'tags' => true,
'maximumInputLength' => 10
],
]);
here NewsTags[tag_id][] is the model and its column. we are not directly calling $model->attribute here

Answer 3

Having a look at the code of kartik\base\InputWidget line 190 :
if ($this->hasModel()) {
$this->name = !isset($this->options['name']) ? Html::getInputName($this->model, $this->attribute) : $this->options['name'];
$this->value = !isset($this->options['value'])? Html::getAttributeValue($this->model, $this->attribute) : $this->options['value'];
}
I've found out that, when loading data with AJAX, initial multiple values should be set in options[value] like this:
<?= $form->field($model, $attribute)->widget(Select2::className(), [
'initValueText' => $initText, // array of text to show in the tag for the selected items
'options' => [
'placeholder' => 'Any text you want ...',
'multiple' => true,
'class' => 'form-control',
'value' => $initIds, // array of Id of the selected items
],
whereas setting value next to initValueText leads to an array_combine error