I'm having issues creating Friendships in Rails 3 beta.
I'm following Railscast 163 (
http://asciicasts.com/episodes/163-self-referential-association) and this is
what I have in the relevant files:
*## CONTROLLERS*
# application_controller.rb
class ApplicationController < ActionController::Base
def current_user
User.find(session[:user_id])
end
end
# friendships_controller.rb
class FriendshipsController < ApplicationController
def create
@friendship = current_user.friendships.build(:friend_id =>
params[:friend_id])
if @friendship.save
flash[:notice] = 'Added friend.'
redirect_to current_user
else
flash[:notice] = 'Unable to add friend.'
redirect_to users_path
end
end
end
*## MODELS*
# friendship.rb
class Friendship < ActiveRecord::Base
belongs_to :user
belongs_to :friend, :class_name => 'User'
end
# user.rb
class User < ActiveRecord::Base
has_many :friendships
has_many :friends, :through => :friendships
# rest snipped for brevity
end
*## VIEWS*
# users/index.html.haml
= link_to 'Add Friend', friendships_path(:friend_id => user), :method =>
:post
# users/show.html.haml
#profile
.section
%h3= @following_title
%ul
- if @user.friendships != []
- for friendship in @user.friendships
%li= friendship.friend.name
- else
%li
Nobody yet.
*## OTHER*
# routes.rb
SampleApp::Application.routes.draw do |map|
resources :friendships
resources :sessions
resources :users do
resources :posts
end
end
# xxxx_create_friendships.rb
class CreateFriendships < ActiveRecord::Migration
def self.up
create_table :friendships do |t|
t.integer :user_id
t.integer :friend_id
t.timestamps
end
end
def self.down
drop_table :friendships
end
end
*The problem:*
When I'm on http://localhost:3000/users/ and I try to 'Add Friend' user_3
(which should POST with http://localhost:3000/friendships?friend_id=3), I
get the following page:
Unknown action
The action 'index' could not be found
It's clearly because there isn't a 'friendships/index' page. However, I
don't understand why the application is even trying to reach
'friendships/index'. The code should be redirecting the current user to
their profile page after the friendship is created.
When I manually go to the current user's profile page, I see that no
friendships are listed--which means that my code for 'Add Friend' isn't
saving the friendship to the database either.
I'm probably missing something very simple, but I'm very new to Rails.
Thanks in advance for any help.
--
Peng Zhong
Web & UX Desiger
http://nylira.com
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