FRONTEND_MVC/modules/manager/views/top-slider/modalform.php

<?php

use yii\helpers\Html;
use yii\jui\DatePicker;
use kartik\datetime\DateTimePicker;
use yii\web\JsExpression;
use yii\web\View;
use yii\widgets\ActiveForm;
use app\models\base\TopSlider;

$model = new TopSlider();

/* @var $this yii\web\View */
/* @var $model app\models\base\TopSlider */
/* @var $form yii\widgets\ActiveForm */

?>

<div class="modal" tabindex="-1" data-show="false" id="modalcsl" data-backdrop="static" data-keyboard="false">
  <div class="modal-dialog modal-lg">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title">Коммерческий слайдер</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">


<div class="top-slider-form">

    <?php $formsl = ActiveForm::begin([
    'id' => 'TopSlider',
    'action' => 'AjaxSave',
    'enableAjaxValidation' => false,
//    'validationUrl' => 'validation-rul',
	]); ?>
	<input type="hidden" name="TopSlider[post_id]" value="<?=$news->id?>">
    <div class="row">
        <div class="col-md-6">
            <?= $formsl->field($model, 'published_from')->widget(DateTimePicker::classname(), [
				'name' => 'published_from',
                'options' => ['class' => 'form-control'],
				'convertFormat' => true,
				'type' => DateTimePicker::TYPE_COMPONENT_PREPEND,
				'pluginOptions' => [
					'format' => 'yyyy-MM-dd hh:i:s',
					'startDate' => '2023-01-01 12:00',
					'todayHighlight' => true,
					'autoclose'=>true
				]
            ])?>
        </div>
        <div class="col-md-6">
            <?= $formsl->field($model, 'published_to')->widget(DateTimePicker::classname(), [
				'name' => 'published_to',
                'options' => ['class' => 'form-control'],
				'convertFormat' => true,
				'type' => DateTimePicker::TYPE_COMPONENT_PREPEND,
				'pluginOptions' => [
					'format' => 'yyyy-MM-dd hh:i:s',
					'startDate' => '2023-01-01 12:00',
					'todayHighlight' => true,
					'autoclose'=>true
				]
            ])?>

        </div>
    </div>

    <?= $formsl->field($model, 'is_active')->checkbox() ?>

    <div class="form-group">
        <a href="javascript:senddata();" class="btn btn-success">Сохранить</a>
    </div>

    <?php ActiveForm::end(); ?>

</div>
      </div>
      <div class="modal-footer">

      </div>
    </div>
  </div>
</div>
<script>
function senddata(){
	var form = $('#TopSlider');
//	console.log(form);
	$.getJSON( "/manager/top-slider/ajaxsave", form.serialize(), function( json ){
		console.log(json);
		if( json.success == 'err' ){
			alert(json.err);
		}
	} );
}
</script>