How to add controller rendering in placeholder in Sitecore SXA?

Question

Is there any way to add the custom controller rendering in a placeholder in SXA?

Whenever I add the controller rendering inside the placeholder I keep getting errors for example Object not set to reference or something like that? I have the code for this specific controller rendering and it does work on other components but when I try to apply it on this new component inside placeholder it just does not work.

Any tips on why is this happening?

Answer 1

I don't think this is the issue of the placeholder. The placeholder will work the same for all kinds of renderings.

It is important that the controller inherit from StandardController or from a class which inherit from StandardController.

The issues of Object not set to reference, may come if object is null and to handle this you need to add null reference check in your code.

Last, if your controller is not creating any error, then you have to add a static HTML in your view to check if the error is coming by adding any unexpected HTML code? If yes, then you need to correct this.

Thanks.