Hello, I have two tables "people" and "relations" Following are the models class Person < ActiveRecord::Base has_and_belongs_to_many :relations class Relation < ActiveRecord::Base has_and_belongs_to_many :people I want to select multiple relations and when i say Person.create(params[:person]) in controller the relation ids and and id of person should be stored in people_relation table. Here is the form for person. <%form_for (:person,:url=>{:action =>"create"},:html => { :multipart => true })do |p|%> <%= p.collection_select :relation_ids, Relation.find(:all, :order => ''relation_name ASC''), :id, :relation_name, { :selected => p.relation_ids }, { :multiple => true, :name => ''p[relation_ids][]'' } -%></td> <%end%> I am getting error undefined method name relation_ids how should i write the above piece of code so that the selected relation_id and person_id go into the people_relations table. Thank you. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---