Visualforce page usingbase standard controller

Question

I have the following Visualforce page and controller:

<apex:page  standardController="sObject" extensions="ExtensionController">
    <div>
         {!o.Id}
    </div>
    <div>
        {!o.Name}
    </div>
</apex:page>

Controller:

public class ExtensionController{

    public SObject  o {get;set;}

    public ExtensionController( ApexPages.StandardController stdController)
    {
        this.o = stdController.getRecord() ;

        ...API CALL...
    }
}

I get the following error

sObject does not exist

Is there any way I can do this? My ultimate goal is to be able to include this page in a few objects' layouts.

Answer 1

When you are extending a page, in the contructor, you need to type cast the stdController.getRecord() value to corresponding object instance. For example (Contact)stdController.getRecord()

For your use case what we can do is to create a generic visualforce component which accept ID of the record. Then get further details using that inside component controller and display in page.