Rails - Nov 2007 - has_many + habtm on same model

Hello,

 In a situation where a user has_many :groups (it owns the group) but also
has_and_belongs_to_many :groups, how is this most easily represented?

 The only way i have found is

 user.rb:
  has_many :groups
  has_and_belongs_to_many :memberships, ,:join_table =>
''memberships'',
:class => ''group''

 group.rb
  belongs_to :user
  has_and_belongs_to_many :memberships, , :join_table =>
''memerships'',
:class => ''user''


 I think there is an opportunity to have a new model membership.rb that
belongs_to :user, belongs_to :group where a user has_many :groups, :through
=> :membership but not 100% sure.

 What is the cleanest approach here?

 Adam

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unknown wrote:
> Hello,
> 
>  In a situation where a user has_many :groups (it owns the group) but 
> also
> has_and_belongs_to_many :groups, how is this most easily represented?
> 
>  The only way i have found is
> 
>  user.rb:
>   has_many :groups
>   has_and_belongs_to_many :memberships, ,:join_table =>
''memberships'',
> :class => ''group''
> 
>  group.rb
>   belongs_to :user
>   has_and_belongs_to_many :memberships, , :join_table =>
''memerships'',
> :class => ''user''
> 
> 
>  I think there is an opportunity to have a new model membership.rb that
> belongs_to :user, belongs_to :group where a user has_many :groups, 
> :through
> => :membership but not 100% sure.
> 
>  What is the cleanest approach here?
User:
  has_many :owned_groups, :class_name => "Group"
  has_many :memberships, :dependent_destroy
  has_many :groups, :through => :memberships

Group:
  belongs_to :owner, :class_name => "User"
  has_many :memberships, :dependent_destroy
  has_many :users, :through => :memberships

That''s how I''d do it.  You want to keep the association names
distinct
(and meaningful too).

--
Josh Susser
http://blog.hasmanythrough.com
-- 
Posted via http://www.ruby-forum.com/.

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