you are using has many throug the wrong way , that is used for many to many associations and i think you only have one to many in every model
and only the models that have belongs_to should have a foreing key On Wed, Sep 8, 2010 at 11:00 AM, radhames brito <rbri...@gmail.com> wrote: > create takes a hash and params[:book] is a hash then you are adding a > second hash with :intance => current_user.intance that is why is says you > are passing 2 arguments > > a good idea try doing this > > @book = current_user.book.new(params[:book]) > @book = current_user.instance > if @book.save > blah blah blah .... > > > > On Wed, Sep 8, 2010 at 10:39 AM, Adam <asteg...@gmail.com> wrote: > >> On Wed, Sep 8, 2010 at 12:55 AM, nobosh <bhellm...@gmail.com> wrote: >> >>> I'm trying to work out your suggestion on how to not have a >>> instance_id in books. can you take a look at let me know what's wrong >>> and if this is what you suggest? thxs! >>> >>> class Instance < ActiveRecord::Base >>> has_many :users >>> has_many :books >>> end >>> >>> class User < ActiveRecord::Base >>> belongs_to :instance >>> has_many :books, :order => "created_at DESC" >>> has_many :instance_books, :through => :instance, :source >>> => :books, >>> :order => "created_at >>> DESC" >>> . >>> . >>> end >>> >>> class Note < ActiveRecord::Base >>> belongs_to :user >>> belongs_to :instance >>> end >>> >>> >>> .... Then to actually get all the notes for instance_id = 1 >>> >>> class NotesController < ApplicationController >>> def index >>> @books = current_user.instance_books >>> . >>> end >>> . >>> . >>> end >>> >>> >>> current_user.instance_books doesn't return the right results. Ideas? >>> thxs >> >> >> I don't think has_many :through will work that way - it needs a real join >> table as far as I know. One with two belongs_to relationships. If you're >> wanting to keep instance_id on books, your original code can work, but Book >> belongs_to Instance, not has_one Instance :through User. If you want to >> ensure the instance is the same as the user's, you can add a validation. >> > validate :instance_is_same_as_user_instance >> > def instance_is_same_as_user_instance >> > unless self.user and self.instance == self.user.instance >> > errors.add(:instance, "must be the same as the instance on this >> Book's User") >> > end >> > end >> >> -- >> 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-t...@googlegroups.com. >> To unsubscribe from this group, send email to >> rubyonrails-talk+unsubscr...@googlegroups.com<rubyonrails-talk%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/rubyonrails-talk?hl=en. >> > > -- 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-t...@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
