You would find having such a need in most Yii Projects. Your database needs a specific format to store date fields, while you may want to display it in different formats to the users on forms and other views.
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Render Form in popup via AJAX (Create and Update) with ajax validation & Also load any page via ajax Yii 2.0 (2.3)
There are a few issues with the other solutions I originally used that I found from other wikis. I address the issues I had in this much simpler and shorter way. I am also going to explain what is going into way more detail than others to help people understand what's going on.
Filter & Sort by calculated/related fields in GridView Yii 2.0
This wiki explains how to add calculated fields into your Yii Framework 2.0 gridview with filtering and sorting.
Creating a Simple CRUD App With Yii2 (Revised 12/20/2013)
By popular demand, today I will be revisiting my previous Yii Framework 2 Getting Started Guide and updating it with what is currently available in the Yii Framework 2 Repository. Provide here is an super simple example CRUD application that will help you get started using the framework.
Displaying, Sorting and Filtering Model Relations on a GridView
One of the things you will find tricky to implement is the the sorting and filtering of a GridView's column that displays related model data.