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studentstudent 

Apex method in visualforce page

Hi!

 

I want to include an apex method, which needs an object as variable, into my own visualforce page. So, if anybody clicks on a commandLink the method should be envoked with the relative object.

 

My approach:

 

<apex:pageBlock title="Title">
   <apex:dataTable value="{!method}" var="object" width="100%">
      <apex:column >
         <apex:facet name="header">ID</apex:facet>
         <apex:form >        
            <apex:commandLink value="{!object.name}" action="{!method(object)}"/>
         </apex:form>
      </apex:column>         
   </apex:dataTable>
</apex:pageBlock>
 
 The
method [in dataTable value] is defined in an apex class and returns a
list of several objects with some attributes, e.g. the name. 
The method(object) [in commandLink action] is also defined in an apex class. Unfortunately I can't refer to the object. 
 
Does anybody know why?
 
Thanks in advance!
 
Phil  


Best Answer chosen by Admin (Salesforce Developers) 
bob_buzzardbob_buzzard
Commandlink action methods can't take parameters in this way. You'll need something along these lines:
 
 
      <apex:commandLink action="{!editConsumable}"  value="{!object.name}" styleClass="btn" status="status">
             <apex:param name="theObject" assignTo="{!selectedObject}" value="{!object}"/>
      </apex:commandLink> 
 
You'll need to change your action method to take no parameters, add a property to your controller called selectedObject, and then in the action method you'll reference it to determine the object associated with the command.
 
Message Edited by bob_buzzard on  11-19-2009 10:13 AM


All Answers
bob_buzzardbob_buzzard
Commandlink action methods can't take parameters in this way. You'll need something along these lines:
 
 
      <apex:commandLink action="{!editConsumable}"  value="{!object.name}" styleClass="btn" status="status">
             <apex:param name="theObject" assignTo="{!selectedObject}" value="{!object}"/>
      </apex:commandLink> 
 
You'll need to change your action method to take no parameters, add a property to your controller called selectedObject, and then in the action method you'll reference it to determine the object associated with the command.
 
Message Edited by bob_buzzard on  11-19-2009 10:13 AM
This was selected as the best answer
studentstudent
unfortunately param value can't contain objects...but after a little time, everything works :-)
So thanks a lot for your great answer! 


bob_buzzardbob_buzzard
Ah yes - I think the param needs to be something that can appear in the URL that the page is submitted to.