Rails - Feb 2009 - ActiveRecord::AssociationTypeMismatch (User(#54754560) expected, got User(#54510280))

i keep getting this AssociationTypeMismatch error. i think this could
be a bug related to ruby/rails when using mixins. heres a short
version of my code:

# user.rb

require ''friend_invitation''
require ''friendship''

class User < ActiveRecord::Base
  include FriendInvitationUser, FriendshipUser

  ...
end


# friendship.rb

...

module FriendshipUser
  def self.included(includer)
    includer.class_eval do
      has_many :friends, :through => :friendship
    end
  end

  # true, if other_user is a friend of mine
  def friend_of?(other_user)
    Friendship.between?(self, other_user)
  end

  ...
end


so basically I''m using modules to mixin new aspects into the User
model (kinda like AOP in ruby). i believe that these mixins together
with the require statements at the top of the User model file cause
the AssociationTypeMismatch. if i get the error, a restart of my
development server solves the problem - but that can''t be the
solution. any ideas where this error comes from or what to do about
it?

any help very appreciated!

matthias
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On 2 Feb 2009, at 13:37, morgler wrote:
>
> i keep getting this AssociationTypeMismatch error. i think this could
> be a bug related to ruby/rails when using mixins. heres a short
> version of my code:
>
> # user.rb
>
> require ''friend_invitation''
> require ''friendship''
using require like this can bust stuff (see
http://www.spacevatican.org/2008/9/28/required-or-not
  )

Fred
>
>
> class User < ActiveRecord::Base
>  include FriendInvitationUser, FriendshipUser
>
>  ...
> end
>
>
> # friendship.rb
>
> ...
>
> module FriendshipUser
>  def self.included(includer)
>    includer.class_eval do
>      has_many :friends, :through => :friendship
>    end
>  end
>
>  # true, if other_user is a friend of mine
>  def friend_of?(other_user)
>    Friendship.between?(self, other_user)
>  end
>
>  ...
> end
>
>
> so basically I''m using modules to mixin new aspects into the User
> model (kinda like AOP in ruby). i believe that these mixins together
> with the require statements at the top of the User model file cause
> the AssociationTypeMismatch. if i get the error, a restart of my
> development server solves the problem - but that can''t be the
> solution. any ideas where this error comes from or what to do about
> it?
>
> any help very appreciated!
>
> matthias
> >

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thanks for the link! it solved my problem :)! thank you so much!

matthias

On 2 Feb., 15:15, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> On 2 Feb 2009, at 13:37, morgler wrote:
>
>
>
> > i keep getting this AssociationTypeMismatch error. i think this could
> > be a bug related to ruby/rails when using mixins. heres a short
> > version of my code:
>
> > # user.rb
>
> > require ''friend_invitation''
> > require ''friendship''
>
> using require like this can bust stuff
(seehttp://www.spacevatican.org/2008/9/28/required-or-not
>   )
>
> Fred
>
>
>
> > class User < ActiveRecord::Base
> >  include FriendInvitationUser, FriendshipUser
>
> >  ...
> > end
>
> > # friendship.rb
>
> > ...
>
> > module FriendshipUser
> >  def self.included(includer)
> >    includer.class_eval do
> >      has_many :friends, :through => :friendship
> >    end
> >  end
>
> >  # true, if other_user is a friend of mine
> >  def friend_of?(other_user)
> >    Friendship.between?(self, other_user)
> >  end
>
> >  ...
> > end
>
> > so basically I''m using modules to mixin new aspects into the
User
> > model (kinda like AOP in ruby). i believe that these mixins together
> > with the require statements at the top of the User model file cause
> > the AssociationTypeMismatch. if i get the error, a restart of my
> > development server solves the problem - but that can''t be the
> > solution. any ideas where this error comes from or what to do about
> > it?
>
> > any help very appreciated!
>
> > matthias
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