Portlet instance Admin

[vishalstudent123]

Hi,

I'm trying to implement the admin preferences. Where the admin can change default values for a portlet instance that will be reflected for everyone viewing that page. Allowing administrators to easily tweak values such as the number of images to display in each column/row for a category portlet for example. This can be done in the admin portlet, but it can be difficult for non-programmers to understand how instances are configured and which instance is displayed on which page. Which is why I also want a admin GUI layout for portlets.


I have seen the thread: http://www.jboss.com/index.html?module=bb&op=viewtopic&t=139028 but i also saw this in the API of 2.6.3:

There are two different types of preferences:

modifiable preferences - these preferences can be changed by the portlet in any standard portlet mode (EDIT, HELP, VIEW). Per default every preference is modifiable.
read-only preferences - these preferences cannot be changed by the portlet in any standard portlet mode, but may be changed by administrative modes. Preferences are read-only, if the are defined in the deployment descriptor with read-only set to true, or if the portlet container restricts write access.

So i went about making preferences read-only and set up a custom view:

 <portlet>
 .....
 <preference>
 <name>numberOfImages</name>
 <value>5</value>
 <read-only>true</read-only>
 </preference>
 <supports>
 <mime-type>text/html</mime-type>
 <portlet-mode>VIEW</portlet-mode>
 <portlet-mode>Admin</portlet-mode>
 </supports>
 </portlet>
 <custom-portlet-mode>
 <name>Admin</name>
 </custom-portlet-mode>
</portlet-app>

allowed my "admin" to edit instance preferences:

<instance>
 <instance-id>name</instance-id>
 <portlet-ref>name</portlet-ref>
 <security-constraint>
 <policy-permission>
 <action-name>admin</action-name>
 <role-name>Admin</role-name>
 </policy-permission>
 <policy-permission>
 <action-name>view</action-name>
 <unchecked/>
 </policy-permission>
 </security-constraint>
</instance>

But when trying to write to the value i get a error:

javax.portlet.ReadOnlyException: Key foo cannot be written

Also when i am looking at the admin portlet logged in as admin i cannot click on the value for a portlet varible where i can change it. Other preferences in other portlets not mark as "read-only" can be changed.

It's like the admin cannot write to the values. Is there something i am missing? I'm using the same default admin that was set when i downloaded it.

Is there something i need to for admin to write to read only values ?