namespace app\components;

In this wiki I will show how could use a Captcha in yii CForm. The easy way to show captcha image is create a form using CHtml method & CActiveForm, but CForm also should be able to show a captcha.

In Yii 1.x, there was a built in widget CStarRating based on the jquery star rating plugin. There exists no prebuilt solution in Yii2, however the same concepts can be extended using any jquery plugin.

If you are coming over to Yii 2 from Yii 1.x, you may have already read this useful wiki for creating dependent dropdowns. You can use a similar approach in Yii 2 to do the same. But if you are looking at a prebuilt solution that helps you manage it easier, read along.

Note the tag {{homeUrl}} will be dynamically replaced at runtime.

With the adoption of PJax on Yii2 things  have change quite a bit with GridView when it comes to work with them in AJAX mode. It will probably be confusing at the beginning, but then you will soon realize how powerful the new approach is.

In this article you'll learn how to send additional form data when uploading files using XUpload widget

Sometimes you have CJuiDialog with different content but same buttons (or width, height). If you don't want to repeat yourself this is a great solution:

You have a multilingual application, and you want the URL of a page to be different for different languages, to account for SEO. The URL for the contact page for example should look like http://something.com/en/contact in english, and http://something.com/de/contact in german. This tutorial describes how to make it happen.
Note that currently selected language is always a part...

You have to extend the widget class and configure it for user login widget