[jboss-dev-forums] [Design of JBoss Portal] - Portlet instance Admin

[Vishal Student 123]

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:
anonymous wrote : 
  | 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 ?

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4171017#4171017

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4171017