I've read through the many threads on this topic and still can't see why my code won't work. I have the following:
class User < ActiveRecord::Base
has_many :user_roles
has_many :user_groups, :through => :user_roles
#define attributes and validations
accepts_nested_attributes_for :user_roles
accepts_nested_attributes_for :user_groups
attr_accessible <some_attributes>, :user_groups_attributes, :user_roles_attributes
class UserRole < ActiveRecord::Base
belongs_to :user
belongs_to :user_group
attr_accessible :role_name
class UserGroup < ActiveRecord::Base
has_many :user_roles
has_many :users, :through => :user_roles
attr_accessible :user_group_name
Via the rails console I'm trying to test creating a user group with associated with a user as follows (before I create the form to do the same)
user = User.last
<user details listed>
user.user_groups.create(:user_group_name => "test", :role_name => "test")
Gives can't mass assign attribute role_name. If anyone can see what I've done wrong I'd really appreciate the help.
