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Topics#VisualforceFred Kampf's Question
Fred Kampf (Horizon BCBSNJ) asked in #Visualforce
Oct 6, 2016, 2:58 PM

Rerender Question

I have a few rerenders on a page that work fine.  I was refreshing the entire page for the others.. however, I don't want to null out the fields that were previously populated if a required field has not yet been populated.

I'm trying to only display the 'Special Accommodation Instructions' pageblock if there is a value in the multi select list on the page named 'Special_Accommodations__c'   Any help would be greatly appreciated!!!!

 <apex:pageBlockSectionItem >

                    <apex:outputLabel value="Special Accommodations"/>

                    <apex:actionregion >                    

                        <apex:inputfield value="{!case1.Special_Accommodations__c}" > 

                            <apex:actionSupport event="onchange" rerender="SAI, abc"  status="overlayStatus" />  

                        </apex:inputfield>

                    </apex:actionregion>

                </apex:pageblocksectionItem>

            </apex:pageBlockSection>

             <apex:outputPanel id="SAI">

           <apex:pageBlockSection title="Special Accommodation Instructions" columns="1" rendered="{!case1.Special_Accommodations__c <> null}" >

             <apex:pageBlockSectionItem >

                    <apex:outputPanel >

                        <div class="requiredInput">

                            <div class="requiredBlock"></div>                            

                            <apex:inputtextarea value="{!case1.Special_Accommodation_Instructions__c}" 

                                cols="100" rows="5"/>                              

                        </div>

                    </apex:outputPanel>

                </apex:pageBlockSectionItem>

            </apex:pageBlockSection>

            </apex:outputpanel>
1 answer
  1. Prateek Sengar (Cognizant Technology Consultant)
    Oct 6, 2016, 4:49 PM
    Hi Fredka,

    Can you please try the following

    1) create a property in your controller to controll the visibility of the section

    public Boolean isVisible {get;set;}
    public pageReference checkVisible()
    {
      if(case1.Special_Accomodation_Instructions__c != null && case1.Special_Accomodation_Instructions__c !=  '')
     {
        isVisible = true;
     }
    }

    2) Update your VF page to use this property

     

    <apex:pageBlockSectionItem >
                        <apex:outputLabel value="Special Accommodations"/>
                        <apex:actionregion >                    
                            <apex:inputfield value="{!case1.Special_Accommodations__c}" > 
                                <apex:actionSupport event="onchange" rerender="SAI, abc"  status="overlayStatus" action="{!checkVisible}" />  
                            </apex:inputfield>
                        </apex:actionregion>
                    </apex:pageblocksectionItem>
                </apex:pageBlockSection>
                 <apex:outputPanel id="SAI">
               <apex:pageBlockSection title="Special Accommodation Instructions" columns="1" rendered="{!isVisible}" >
                 <apex:pageBlockSectionItem >
                        <apex:outputPanel >
                            <div class="requiredInput">
                                <div class="requiredBlock"></div>                            
                                <apex:inputtextarea value="{!case1.Special_Accommodation_Instructions__c}" 
                                    cols="100" rows="5"/>                              
                            </div>
                        </apex:outputPanel>
                    </apex:pageBlockSectionItem>
                </apex:pageBlockSection>
                </apex:outputpanel>

     
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