[SalesForce] Null check for Date field on VF Page

How do I check if a Date field is null?

Below is the code:

<apex:outputText label="Date:" value="{0, date,  MM/ dd/ yyyy}" style="text-align:center;" > 
    <apex:param value="{!care.Completion_Date__c}"/>  
</apex:outputText>

If value is null I want to show the message 'Value is null'
Can anyone please help?

Thanks.

Best Answer

You can easily do this. Just use the render condition and display two OutputText. Based on the date field it will display output.

 <apex:outputText label="Date:" value="{0, date,  MM/ dd/ yyyy}" style="text-align:center;" rendered="{!care.Completion_Date__c != null}"> 
    apex:param value="{!care.Completion_Date__c}"/>  </apex:outputText>
<apex:outputText label="Date:" value="Value is null" style="text-align:center;" rendered="{!care.Completion_Date__c == null}"/>

Or you can also use VF function to check null validation

<apex:outputText label="Date:" value="{0, date,  MM/ dd/ yyyy}" style="text-align:center;" rendered="{!NOT(ISBLANK(care.Completion_Date__c))}">
    apex:param value="{!care.Completion_Date__c}"/>  </apex:outputText>
<apex:outputText label="Date:" value="Value is null" style="text-align:center;" rendered="{!ISBLANK(care.Completion_Date__c == null)}"/>

Related Solutions

[SalesForce] Inserting Date Field with JS Remote Objects

You can pass javascript date object to the apex date field..

initialise the js date from the date string and pass the js date variable

var dt = new Date('2015-12-12');
var oppDetails = { Name: 'Test Opp', CloseDate: dt, StageName:'New' };

here's the full code I tested in my dev org which worked..

<apex:page >
  <script type="text/javascript">
     function createOpp(){    
        var dt = new Date('2015-12-12');
        var oppDetails = { Name: 'Test Opp', CloseDate: dt, StageName:'New' };
        var opp = new RemoteObjectModel.Opportunity();
        opp.create(oppDetails, function(err) {
            if(err) { 
                console.log(err);
                alert(err.message);
            }
            else {
                console.log(opp.get('Id')); 
                alert('success');
            }
        });
     }
  </script>
  <apex:remoteObjects jsNamespace="RemoteObjectModel">
    <apex:remoteObjectModel name="Opportunity" fields="Id,Name,CloseDate,StageName">
    </apex:remoteObjectModel>
  </apex:remoteObjects>
  <input type="button" onClick="createOpp()" value="Create Opp" />
</apex:page>

[SalesForce] String null value check concatenate string

You need to use parentheses to make sure that the logic is parsed correctly:

string result = (abc__c.field1__c != NULL ? abc__c.field1__c : '')+
                (abc__c.field2__c != NULL ? abc__c.field2__c : '')+
                (abc__c.field3__c != NULL ? abc__c.field3__c : '');

The reason why is that the ternary operator is right associative, and + has a higher precedence than assignments (including ternary operators), so the default operation without parentheses looks like this:

string result = abc__c.field1__c != NULL ? abc__c.field1__c : (''+
                abc__c.field2__c != NULL ? abc__c.field2__c : (''+
                (abc__c.field3__c != NULL ? abc__c.field3__c : '')));

Which is not the intended effect.

Best Answer

Related Solutions

[SalesForce] Inserting Date Field with JS Remote Objects

[SalesForce] String null value check concatenate string

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