Does your application need to know user's details on browser details, os and device type? We can use PHP's misc. function to achieve that provided you have an update copy of browsercap.ini

Hey Everyone, In this post I Just shared my Experience what most of interviewer ask in YII2 Interview.

GridView show sum of columns in footer `PHP use yii\grid\DataColumn;

solution here If we are using default pagination option like

I'm using PayPal's script from

I leverage Kartik's notification widgets.

Search Models are a very elegant and powerful way to build an Active Data Provider. If you use them a lot, you'll quickly need to use scenarios, which will lead you to a very DRY Controller code.

Use this extension : yii2-relation-trait

As for complexity SQL query we have two solutions as below, I will discuss #2 in this article.

I have been working on a REST API using the excellent tools provided by Yii2. My problem was that I have to differentiate between empty values and null values. In other words, <elem></elem> is different from null as it represents an empty string. Also, although some use <elem/> to represent a null value it should still be interpreted as an empty string. In other cases, the absence of the eleme...

You have different collections in MongoDb with de-normalized attributes. As you may know, due to its not-join nature, MongoDb tends to encourage repetition of the same value in different collections (de-normalization). In this MongoDb is opposed to a more SQL-like approach where you usually reference only the ID of the value with a foreign key.

In Yii1 I used to have my own components under the components folder of the structure, now with namespacing this is a little bit different.

Ok, you have installed a Yii 2 basic or advanced app for the first time and completed the post install steps. You have picked up a few extensions to install for the first time as well. You would already see a composer.lock file in your application root folder.

The tips here are for advanced usages of composer and its assumed you have read about using composer and have a knowledge of your vendor packages to be updated. Let's consider, you want to update only one specific yii2 vendor library, without updating all the other extension packages?

The yii2-field-range extension enables you to easily setup ActiveField range fields with Bootstrap styling. You basically can setup two attributes joined together like a single field with combined validation error block.

this is my way for embed js code block in view file:

We are running one frontend running NGINX and several app servers running Apache2. There are several issues we have come across but right now I'll be documenting one of them. I'll be completing this article when I get more time.

First of all, install yii2 basic template according below link:

I have a calls which help me display json directly in html table.

There are some very advanced grids in the Yii2 community, specifically Kartik's amazing gridview extensions but they all designed for interactive screen use.