Question

I’m wondering if there is a way to set a scope on a model class for the rest of a request? I.e. I want to scope down some results, but I want to do it without the main restful controller knowing (perhaps in a before_filter injected into the controller).

Contacts.scope = { :conditions => {:public => true} } if ladeda

then later on

Contacts.all

should return the contacts with the scope. That is just pretend code, does anyone know if this is possible?

Cheers,

Brendon

Answer 1

Here’s how I would do it:

class Contact < ActiveRecord::Base
  named_scope :public_only, :conditions => {:public => true}
end

class ApplicationController
  protected
  def contacts
    @_contacts ||= ladeda ? Contact.public_only  : Contact
  end
end

class ContactsController < ApplicationController
  def index
    @contacts = contacts.all
  end
end

I’m moving the decision to use a scope or not to a helper method. Alternatively, you could move the helper method to the Contact model itself, such as this:

class Contact < ActiveRecord::Base
  def self.for_index
    ladeda ? self.public_only : self
  end
end

class ContactsController < ApplicationController
  def index
    @contacts = Contact.for_index
  end
end