$this->crud->addField([
'name' => ['event_start_date', 'event_end_date'],
'type' => 'date_range',
'label' => "Start Date",
'wrapperAttributes'=>['class'=>'form-group col-md-6'],
//'default' => [date("Y-m-d"), date("Y-m-d")],
'date_range_options' => [
'todayBtn' => 'linked',
// options sent to daterangepicker.js
//'timePicker' => true,
'startDate' => date("Y-m-d"),
'endDate' => date("Y-m-d"),
'minDate'=> date("Y-m-d"),
'locale' => ['format' => 'YYYY-MM-DD']
],
'allows_null' => true,
]);