Liferay Permission Checker

Liferay-Permission Checker

Checking permission in liferay is just a matter of calling a function .


This function , is given the groupId , the name of the class , the primary key of the class and the type of Action supported.

We have defined all this in the default.xml file under the resource-actions folder.

The above permissionChecker , simply passes on these parameters and checks it against the permissions given to the particular user . If the user has permission it will return true , else false.

We have used the permission checker to toggle the Delete functionality for different users . Any user having role for which delete functionality has been granted permission . will see the delete icon , else wont.

Here is a screen shot displaying the permissionChecker in action , with 2 images of the portlet on before log-in and one after log-in.

Pre-Login .

Post-Login .

PermissionChecker API


Liferay Messages



SessionMessages and SessionErrors , are two classes which ease out sending out messages to the users or while debugging.

Few Uses of the liferay-error :



The message attribute contains the key to the key-value pair store in the Language.properties file.

Language.properties :
book-added=Books have been Added Successfully !
error-while-adding=Some Error has Occured While Adding, Please Try Again

If you click on Submit with all the fields empty , it will show you the above messages.

Cheers...!!

Gaurav Rastogi