help with nested creation: what am I doing wrong?

rubyonrails-talk
1

I've got nested scaffolded resource objects as indicated below. All the routing and display stuff seems to work properly, but when I create a new identity, it shows up in the database with a NULL user_id, even though I'm creating the object via the identities attribute of a user object. What am I missing?

Relevant snippets:

config/routes.rb: map.resources :users do |users|      users.resources :identities end

models/user.rb: class User < ActiveRecord::Base     has_many :identities end

models/identity.rb: class Identity < ActiveRecord::Base     belongs_to :user end

controllers/identities_controller.rb: class IdentitiesController < ApplicationController     before_filter :get_user

   def get_user       @user = User.find(params[:user_id])    end

  def create     @identity = @user.identities.new(params[:identity])     respond_to do |format|        if @identity.save          flash[:notice] = 'Identity was successfully created.'          format.html { redirect_to identity_url(@user, @identity) }          format.xml { head :created, :location => identity_url(@user,                                   @identity) }        else          format.html { render :action => "new" }          format.xml { render :xml => @identity.errors.to_xml }        end     end   end

end

2

try changing @identity = @user.identities.new(params[:identity])

to @identity = @user.identities.build(params[:identity])