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The easiest way to update content in AJAX is to use the renderPartial method.

With yii you're able to create ajax requests and updates easily. But most times you always want to show a loading indicatior to your user.

Often you'll need a form with two dropdowns, and one dropdown's values will be dependent on the value of the other dropdown. Using Yii's built-in AJAX functionality you can create such a dropdown.

Since I used CGridView for a first time, I didn't like how it handled operations like sorting, filtering, changing page and etc using AJAX.

This example uses a MySQL DB with a table named tree with the fields id, name, and parent_id. The parent_id will be NULL for root elements. The SQL is kept simple (no autoinc, no FK, etc).

This solution requires Yii 1.1.9 or above

With Yii you can use one CActiveForm for collecting data for two or more models with ajax validation and client validation.

Sometimes the active form we wish to use to edit/add a new element on our database is too small and we believe that is much better to use an AJAX'ed dialog/slide form rather than reloading the page to just display one or two fields.

This is based on this article.

Hello ppl. Even though i have a small experience with yii I though of writing this to help people which want to do something similar.