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Checking for Object Accessibility

If a user has insufficient privileges to view an object, any Visualforce page that uses a controller to render that object is inaccessible. To avoid this error, ensure that your Visualforce components only render if a user has access to the object associated with the controller.

You can check for the accessibility of an object like this:

1{!$ObjectType.objectname.accessible}

This expression returns a true or false value.

For example, to check if you have access to the standard Lead object, use the following code:

1{!$ObjectType.Lead.accessible}

For custom objects, the code is similar:

1{!$ObjectType.MyCustomObject__c.accessible}

where MyCustomObject__c is the name of your custom object.

To ensure that a portion of your page will display only if a user has access to an object, use the rendered attribute on a component. For example, to display a page block if a user has access to the Lead object, you would do the following:

1<apex:page standardController="Lead">
2	<apex:pageBlock rendered="{!$ObjectType.Lead.accessible}">
3		<p>This text will display if you can see the Lead object.</p>
4	</apex:pageBlock>
5</apex:page>

Provide an alternative message if a user can't access an object. For example:

1<apex:page standardController="Lead">
2	<apex:pageBlock rendered="{!$ObjectType.Lead.accessible}">
3		<p>This text will display if you can see the Lead object.</p>
4	</apex:pageBlock>
5	<apex:pageBlock rendered="{! NOT($ObjectType.Lead.accessible) }">
6		<p>Sorry, but you cannot see the data because you do not have access to the Lead object.</p>
7	</apex:pageBlock>
8</apex:page>

Visualforce Developer Guide

Checking for Object Accessibility