I am trying to use a module to define a common interface between several ActiveRecord model classes, but I am having trouble setting the instance variable in the mixin functions. For example, I have a function, def showusername @user = ... end If I put this function in the action controller, it works fine, but if I move it to the module, the instance variable @user is nil when I try to call it in the .rhtml file. Does anyone know why this is? Did I just implement the code incorrectly or am I using mixins incorrectly
I briefly read that you can only use mixins to define non-action methods. Does anyone know if this is true and why that would be the case?
Anyway, I would greatly appreciate any advice. I found examples of people using mixins to add methods to Active Record classes, but none of these functions tried to set instance variables or acted as action methods, so I feel I am incorrectly using the mixin.
Thanks, Chris