yii2 select2 by kartik-v set default value - php

Question

I've a question about yii2 kartik-v widget select 2.
the widget is attached to a field in my view
<?=
$form->field($model, 'address')->widget(Select2::className(), [
'options' => ['placeholder' => 'Inserta an address '],
'pluginOptions' => [
'allowClear' => true,
'minimumInputLength' => 3,
'ajax' => [
'url' => Url::to(['register/addresses']),
'dataType' => 'json',
'data' => new JsExpression('function(params) { return {q:params.term}; }')
],
'escapeMarkup' => new JsExpression('function (markup) { return markup; }'),
'templateResult' => new JsExpression('function(address) { return address.name; }'),
'templateSelection' => new JsExpression('function (address) { return address.name; }'),
],
'pluginEvents' => [
"select2:select" => "function(e) {
// some function
}",
],
]);
?>
if in my controller i want to set to this field a value
like: $model->address = "Some Value"; on the view the field remain blank
what can i do?
UPDATE!
As the documentation say i can use the option: 'initValueText' if i use the ajax version of this plugin. So i've tried to set 'initValueText' => $model->address, but the result is the same

Answer 1

hey i had the same issue with #ajax neither placeholder nor initValueText were showing
what i did was this
<?php
$product = $model->product_id ? Product::findOne($model->product_id)->name : 'select ....';
echo $form->field($model, 'product_id')->widget(Select2::classname(), [
'initValueText' => $product, // set the initial display text
// 'options' => ['placeholder' => 'select ....'],
'pluginOptions' => [
'allowClear' => true,
'minimumInputLength' => 3,
'ajax' => [
'url' => Url::to(['list']),
'dataType' => 'json',
'data' => new JsExpression('function(params) { return {q:params.term}; }')
],
'escapeMarkup' => new JsExpression('function (markup) { return markup; }'),
'templateResult' => new JsExpression('function(product_id) { return product_id.name; }'),
'templateSelection' => new JsExpression('function (product_id) { return product_id.name; }'),
],
]);?>
if the model is new 'select ....' is shown else the product's name
since "options" is not doing much either
hope this will be hopeful to someone

Answer 2

The problem was this:
'escapeMarkup' => new JsExpression('function (markup) { return markup; }'),
'templateResult' => new JsExpression('function(address) { return address.name; }'),
'templateSelection' => new JsExpression('function (address) { return address.name; }'),
It seems that this plugin want a specific return for the keys 'templateResult' and 'templateSelection'.
I've modified the JsExpression return value with address.text (instead of adress.name) as the guide examples : Link.
And then i've modified also the PHP method that return the results:
public function actionAddresses($q = NULL, $id = NULL)
{
Yii::$app->response->format = Response::FORMAT_JSON;
$results = array();
if (!is_null($q)) {
$geocoder = new GeocodingClient();
$request = $geocoder->lookup(['address' => $q]);
$counter = 1;
foreach ($request['results'] as $key => $value) {
$results['results'][] = [
'id' => $counter,
'text' => $value['formatted_address'], // Instead of 'name'
'coordinate' => $value['geometry']['location']
];
$counter++;
}
}
return $results;
}
I hope this may help someone with a similar problem.

Answer 3

Its bit late.. but i too had same problem.. i resolved it by assigning value
<?=
$form->field($model, 'address')->widget(Select2::className(), [
'initValueText' => $model->address,
'value' => $model->address,
'options' => ['placeholder' => 'Inserta an address '],
'pluginOptions' => [
'allowClear' => true,
'minimumInputLength' => 3,
'ajax' => [
'url' => Url::to(['register/addresses']),
'dataType' => 'json',
'data' => new JsExpression('function(params) { return {q:params.term}; }')
],
'escapeMarkup' => new JsExpression('function (markup) { return markup; }'),
'templateResult' => new JsExpression('function(address) { return address.name; }'),
'templateSelection' => new JsExpression('function (address) { return address.name; }'),
],
'pluginEvents' => [
"select2:select" => "function(e) {
// some function
}",
],
]);
?>

Answer 4

you use kartik select2, in controller you have set a value (id/ids) and name values for 'initValueText'
$model->id = 1; // or if arrays [1,3,4,5]
$username = User::find()->select('name')->where('id' => $model->id)->scalar();
and in view kartik select2
$form->field($model, 'username')->widget(Select2::className(), [
'initValueText' => $username;
...

Answer 5

I was facing same problem. Then I tried value key into the options and it worked.
<?php
echo $form->field($model, 'test')->widget(Select2::classname(), [
//'data' => ['test', 'test2'],
'initValueText'=>['test','test2'],
'options' => ['multiple' => true, 'value'=>['1','2']],
'pluginOptions' => [
'multiple' => true,
'allowClear' => true,
'minimumInputLength' => 1,
'language' => [
'errorLoading' => new JsExpression("function () { return 'Waiting for results...'; }"),
],
'ajax' => [
'url' => '...',
'dataType' => 'json',
'data' => new JsExpression('function(params) { return {q:params.term}; }')
],
'escapeMarkup' => new JsExpression('function (m) { return m; }')
?>
Hope It'll be helpful for someone.

Answer 6

I fix this solution by using trigger function. In below method we can set default value in kartik select2 widget.
$('#id').val(11).trigger('change'); //in val() mention the hash value of your select2 list