[SalesForce] Display the message if the size = 0 – visual force page

Is there a way to display a message if the list has 0 records? in VisualForce Page? so my idea is to display something like this in the Pageblock

 <apex:pageBlock title="Contacts">
      There are no records to display {!SelectedContacts.size=0}.
   </apex:pageBlock>

here is my visual force page actually I have:

<apex:pageblock id="Selected_PBS" title="Selected Contact"  >
  <apex:pageBlockTable value="{!SelectedContacts}" var="contact">
     <apex:column value="{!contact.Name}"/>
     <apex:column value="{!contact.Email}"/>
     <apex:column value="{!contact.Phone}"/>
  </apex:pageBlockTable>

Best Answer

Instead of using two pageBlocks you can conditionally render the title value in apex:pageBlock to show the availability and unavailability of Objects in list. I have modified only the title attribute in your code.

<apex:pageblock id="Selected_PBS" title="{!IF(SelectedContacts != NULL && SelectedContacts.size > 0,'Selected Contact','There are no records to display')}">
  <apex:pageBlockTable value="{!SelectedContacts}" var="contact">
    <apex:column value="{!contact.Name}"/>
    <apex:column value="{!contact.Email}"/>
    <apex:column value="{!contact.Phone}"/>
  </apex:pageBlockTable>
</apex:pageBlock>

Hope it helps.

Related Solutions

[SalesForce] Is it possible to test list size from a VisualForce page

This is just a syntax issue, your condition will work if you make a few small changes

Change

 <!-- doesn't work, this is apex, not a formula as required -->
    <apex:pageBlockTable ... rendered="contacts.size()>0">

 <apex:pageBlockTable ... rendered="{!contacts.size>0}">

[SalesForce] Display error or warning message without ApexPages using Global Component

Since your <apex:message /> component is nested one, you might need to use more complete path specifier as described in the documentation here.

So try below VF code

<apex:form id="myForm">
        <apex:outputPanel id="errorPanel">
            <apex:message id="msg" />
        </apex:outputPanel>
</apex:form>

And access it in your JS function as below.

var element =  document.getElementById('{!$Component.myForm.errorPanel.msg}');

Also note that if your form component has any parent components you might need to introduce ids for them as well and use that full path in your JS function.

Best Answer

Related Solutions

[SalesForce] Is it possible to test list size from a VisualForce page

[SalesForce] Display error or warning message without ApexPages using Global Component

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