is there a bug with habtm and the "_ids" method?

rubyonrails-talk
1

Hi,

Is there some problem with the habtm "_ids" function. See this example:

class User < ActiveRecord::Base    has_and_belongs_to_many :groups end

class Group < ActiveRecord::Base    has_and_belongs_to_many :users end

   g=Group.find(1)    print "size=", g.users.size, "\n"

   a=g.user_ids

Here is the output:

    Group Load (0.000789) SELECT * FROM groups WHERE (groups.id = 1) LIMIT 1      Group Columns (0.001408) SHOW FIELDS FROM groups      Join Table Columns (0.000971) SHOW FIELDS FROM groups_users      User Load (0.002074) SELECT * FROM users INNER JOIN groups_users ON users.id = groups_users.user_id WHERE (groups_users.group_id = 1 )

   size=2

/usr/lib/ruby/gems/1.8/gems/activerecord-1.14.2/lib/active_record/base.rb:1792:in `method_missing': undefined method `user_ids' for #<Group:0xb7923e60> (NoMethodError)

As you can see, there are records in the association, but the "_ids" function is missing?

Any ideas?

Thanks,

David

2

dtrusty@my-deja.com wrote:

As you can see, there are records in the association, but the "_ids" function is missing?

Rails only defines setter method for <singular_class>_ids, not a getter method. You have to write you own getter.