Jet Thompson wrote:
I have a class photo. It belongs_to a project.
In my ProjectsController I am creating 2 instance variables:
@displayphoto = Photo.find_by_project_id(params[:id])
@photo = @project.build_photo
The @displayphoto instance returns a nil object. However,
@photo = Photo.find_by_project_id(params[:id])
works fine. So evidently it is the name @displayphoto that is causing the problem.
So I have 2 questions:
1) Must an instance variable always be the same name as the name of the class?
No. An instance variable is just a variable (scoped to the instance of it's class). And ivar can reference any object.
2) If the above is true, how can I create 2 separate instance variables in my controller for the same class?
Just as you attempted to do. There is obviously something else going on here that can't be seen from the code you provided. Or, the value of params[:id] is different between your two example.