By default, the expression Yii::app()->user returns a [CWebUser] [application component](http://www.yiiframework.com/doc/guide/basics.application#application-component) which represents the information that are closely related with the current user. Some information can be persistent throughout the current user session. For example, [CWebUser] already comes with a [name|CWebUser::name] property th...

Once you are completed with the "Creating First Yii Application", the following can be done.

Next to do is to download the Yii FCKeditor extension, created by Ascomae. Extract the downloaded file, and place the fckeditor/ widget folder in your web applications protected/extensions/ directory.

This page assumes that you have installed Wampserver on your MS Windows computer.

First declare an attribute to store the file name in the model class (either a form model or an active record model). Also declare a file validation rule for this attribute to ensure a file is uploaded with specific extension name.

Validators extending from [CValidator] all have a property named [message|CValidator::message]. You can set this property in the corresponding validation rule to customize the error message. For example, the following validation rule uses an error message that is different from the default one: