Hi,
I'm currently building an app that has these models:
class Project < ActiveRecord::Base
has_many :collabs
has_many :users, :through => :collabs
end
class User < ActiveRecord::Base
has_many :collabs
has_many :projects, :through => :collabs
end
# collabs is the "join" model only...
class Invitation < ActiveRecord::Base
belongs_to :project
end
Then in my UsersController#new I check if there is an invitation code,
if so then I pass a hidden field to the form with the invitation code
so when the user is saved it's added to the project which was invited
to. I have this on my user model like this:
class User < ActiveRecord::Base
...
attr_accessor :invitation_token
after_create :add_to_project_by_invitation, :if => lambda { |u| !
u.invitation_token.blank? }
def add_to_project_by_invitation
invitation = Invitation.find_by_token(invitation_token)
projects << invitation.project if invitation && !projects.include?
(invitation.project)
end
end
When I invite a user to the project 1 and he tries to signup with the
invitation token, then this error raises:
Mysql::Error: Duplicate entry '1-3' for key 2: INSERT INTO `collabs`
(`created_at`, `project_id`, `updated_at`, `admin`, `user_id`) VALUES
('2009-01-11 04:15:13', 1, '2009-01-11 04:15:13', 0, 3)
BUT!, when I just change the after_create callback in my User model to
before_create it goes all sweetie...
I'm using Rails 2.2.2
Could this be a bug?... The full stack is here: http://pastie.org/357749
Regards.
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