FeedItem values to be displayed only when the createdbyid!=insertedbyid

Question

I have the following piece of code in my visualforce page

<apex:pageBlockTable value="{!AModel.RelFeedItems}" var="Feeds">
               <apex:column >
                    <apex:facet name="header">Date</apex:facet>
                    <apex:outputField value="{!Feeds.CreatedDate}" />
                </apex:column>
               <apex:column >
                    <apex:facet name="header">Body</apex:facet>
                    <apex:outputText value="{!Feeds.Body}" />
                </apex:column>
                <apex:column >
                    <apex:facet name="header">ModStamp</apex:facet>
                    <apex:outputField value="{!Feeds.SystemModstamp}" rendered="insertedbyid!=createdbyid"/>**!--I want some thing like this--**
                </apex:column>
                <apex:column >
                    <apex:facet name="header">Inserted By Name</apex:facet>
                    <apex:outputField value="{!Feeds.InsertedBy.name}" />
                </apex:column>
          </apex:pageBlockTable>  
            </apex:pageBlock>

What i want is that the modtamp field to be displayed only when insertedbyid!=createdbyid otherwise it should display a null value.

Answer 1

Use IF condition inside the rendered attribute of <apex:outputField to get the desired result.

<apex:outputField value="{!Feeds.SystemModstamp}" rendered = "{! If(insertedbyid!=createdbyid ,true,false) }"/>