yii2-advanced-app

Like i want to create function with name "dt()" function dt(){ return date('Y-m-d H:i:s'); } and want to access it like this:- echo dt(); //retrun current date and time format Which is better place in Yii2 framework to do that? You can use it this way: http://www.yiiframework.com/extension/yii2-helpers/ Create a folder /common/helpers/ , then create a helper class there and add your static methods. namespace common\helpers; class DateHelper { public static function dt(){ return date('Y-m-d H:i:s'); } } Usage use common\helpers\DateHelper; echo DateHelper::dt(); For yii2, First Make a folder

I have table which have multiple reference to ohter tables like user id name email categories id title user_categories user_id category_id Here a user will have multiple category associated with him/her I am able to save these successfully with new records like following View File: echo $form->field($package_categories, 'category_id')->dropDownList( ArrayHelper::map( StudyMaterialCategories::find()->all(), 'id', 'title'), ['multiple' => true] ); Save New record: $model = new Packages(); $package_categories = new PackageCategories(); $request = Yii::$app->request; if ($request->isPost) {