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Nesse wiki vou tentar exemplificar de forma mais clara e objetiva o uso de widget com o CDataProvider.

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Sometime, in a many-to-many relation, you need to retrieve AR that aren't linked. In practice, AR with null value in the join table. So you implements a criteria like this :

A time ago i've met the issue that Yii doesn't run any client-side form validation when submitting the form by CHtml::ajaxSubmitButton. The small javascript below helps to fix it.

Facebook Deauthorize callback is used to getting notification to the app owner when a user uninstall our app from their fan page or profile.

In order to avoid bounce messages and unsolicited registrations, most webapps send automatic activation emails upon user registration, and the account remain inactive as long as it is not activated. Better yet, you can periodically purge your data by removing accounts that have not yet been activated.

I. In the view script add the following hidden fields:

** I actually made this into an extension for easier use. You can view the extension: http://www.yiiframework.com/extension/rackspaceconnect/

Create param.php file in protected/config

This is a very simple tutorial that demonstrates how to redirect user back to the returnUrl if he is already logged in.