Question

I’ve got the following I’ve pasted into my user model:

module ClassMethods
  Devise::Models.config(self, :email_regexp, :password_length)
end

I want to do something like self.extend ClassMethods in my User model, but I can’t quite seem to get it right. I want to make these methods from devise accessible directly in my User model.

Answer 1

You need to use ActiveSupport::Concern for this. In the module that should be used to extend a class you insert:

module ModuleName
     extend ActiveSupport::Concern
     ....
     ....
     ....
     module ClassMethods
           # the Class Methos you want to add to other Classes here
     end

     module InstanceMethods
           # the instance Methods you want to add to other classes here
     end
end

And then eht only thing you need to do is include it in the Model you want to extend!

class User < ActiveRecord::Base
     include ModuleName
end

Thats it. For more info have a look at apidock => ActiveSupport::Concern!