Kartik datepicker extention not working on array input form - yii2

Question

I have a form field "dob[]" with array input like
<?php $form = ActiveForm::begin();
for($i=0;$i<= 3;$i++):
echo $form->field($model, 'dob[]')->widget(DatePicker::classname(), [
'options' => ['placeholder' => 'Date Of Birth'],
'type' => DatePicker::TYPE_INPUT,
'pluginOptions' => [
'format' => 'mm/dd/yyyy',
'autoclose' => true,
]
]);
endfor; ?>
<div class="form-group">
<?= Html::button('Submit', ['class' => 'btn btn-success']) ?>
</div>
<?php ActiveForm::end(); ?>
Datepicker working only on first "dob" field but rest of the field having only button format of datepicker but calendar not working.

Answer 1

This is because the javascript cannot determine the correct input fields, after the first one. Take a look in your source code. All widgets have properly the same id and/or name. You have to setup a unique ID for each of the generated widgets.
By the way, it is always a good approach to name form data accordingly.
That is documented at the demo page.
The following should work:
<?php
$form = ActiveForm::begin();
for ($i=0; $i < 3; $i++) {
echo $form->field($model, 'date_end')->widget(DatePicker::classname(), [
'options' => [
'placeholder' => 'Date Of Birth',
'name' => 'DOB' .$i,
'id' => 'DOB-ID' . $i,
],
'type' => DatePicker::TYPE_INPUT,
'pluginOptions' => [
'format' => 'mm/dd/yyyy',
'autoclose' => true,
],
]);
}
?>
<div class="form-group">
<?= Html::button('Submit', ['class' => 'btn btn-success']) ?>
</div>
<?php ActiveForm::end(); ?>