Rails 3 and Friendship models

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 Z.

Web & UX Desiger
http://nylira.com

On Mar 2, 2010, at 9:40 PM, Peng Z. wrote:

VIEWS

users/index.html.haml

= link_to ‘Add Friend’, friendships_path(:friend_id => user), :method => :post

Try doing

rake routes

to see what friendships_path is. Betcha it is
FriendshipsController#index

This is what I have for rake routes. It looks like friendships_path is
FriendshipsController#index (like you said), but with :method => :post
it
should link to FriendshipsController#create?

It looks like GET is happening instead of POST.

GET /friendships(.:format)
{:controller=>“friendships”, :action=>“index”}
friendships POST /friendships(.:format)
{:controller=>“friendships”, :action=>“create”}
new_friendship GET /friendships/new(.:format)
{:controller=>“friendships”, :action=>“new”}
GET /friendships/:id(.:format)
{:controller=>“friendships”, :action=>“show”}
PUT /friendships/:id(.:format)
{:controller=>“friendships”, :action=>“update”}
friendship DELETE /friendships/:id(.:format)
{:controller=>“friendships”, :action=>“destroy”}
edit_friendship GET /friendships/:id/edit(.:format)
{:controller=>“friendships”, :action=>“edit”}
GET /sessions(.:format)
{:controller=>“sessions”, :action=>“index”}
sessions POST /sessions(.:format)
{:controller=>“sessions”, :action=>“create”}
new_session GET /sessions/new(.:format)
{:controller=>“sessions”, :action=>“new”}
GET /sessions/:id(.:format)
{:controller=>“sessions”, :action=>“show”}
PUT /sessions/:id(.:format)
{:controller=>“sessions”, :action=>“update”}
session DELETE /sessions/:id(.:format)
{:controller=>“sessions”, :action=>“destroy”}
edit_session GET /sessions/:id/edit(.:format)
{:controller=>“sessions”, :action=>“edit”}
GET /users/:user_id/posts/:post_id/comments(.:format)
{:controller=>“comments”, :action=>“index”}
user_post_comments POST
/users/:user_id/posts/:post_id/comments(.:format)
{:controller=>“comments”, :action=>“create”}
new_user_post_comment GET
/users/:user_id/posts/:post_id/comments/new(.:format)
{:controller=>“comments”, :action=>“new”}
GET /users/:user_id/posts/:post_id/comments/:id(.:format)
{:controller=>“comments”, :action=>“show”}
PUT /users/:user_id/posts/:post_id/comments/:id(.:format)
{:controller=>“comments”, :action=>“update”}
user_post_comment DELETE
/users/:user_id/posts/:post_id/comments/:id(.:format)
{:controller=>“comments”, :action=>“destroy”}
edit_user_post_comment GET
/users/:user_id/posts/:post_id/comments/:id/edit(.:format)
{:controller=>“comments”, :action=>“edit”}
GET /users/:user_id/posts(.:format)
{:controller=>“posts”, :action=>“index”}
user_posts POST /users/:user_id/posts(.:format)
{:controller=>“posts”, :action=>“create”}
new_user_post GET /users/:user_id/posts/new(.:format)
{:controller=>“posts”, :action=>“new”}
GET /users/:user_id/posts/:id(.:format)
{:controller=>“posts”, :action=>“show”}
PUT /users/:user_id/posts/:id(.:format)
{:controller=>“posts”, :action=>“update”}
user_post DELETE /users/:user_id/posts/:id(.:format)
{:controller=>“posts”, :action=>“destroy”}
edit_user_post GET /users/:user_id/posts/:id/edit(.:format)
{:controller=>“posts”, :action=>“edit”}
GET /users(.:format)
{:controller=>“users”, :action=>“index”}
users POST /users(.:format)
{:controller=>“users”, :action=>“create”}
new_user GET /users/new(.:format)
{:controller=>“users”, :action=>“new”}
GET /users/:id(.:format)
{:controller=>“users”, :action=>“show”}
PUT /users/:id(.:format)
{:controller=>“users”, :action=>“update”}
user DELETE /users/:id(.:format)
{:controller=>“users”, :action=>“destroy”}
edit_user GET /users/:id/edit(.:format)
{:controller=>“users”, :action=>“edit”}
signup /signup
{:controller=>“users”, :action=>“new”}
login /login
{:controller=>“sessions”, :action=>“new”}
logout /logout
{:controller=>“sessions”, :action=>“destroy”}
help /help
{:controller=>“pages”, :action=>“help”}
about /about
{:controller=>“pages”, :action=>“about”}
contact /contact
{:controller=>“pages”, :action=>“contact”}
root /
{:controller=>“pages”, :action=>“index”}

On Thu, Mar 4, 2010 at 3:19 PM, steve ross [email protected] wrote:

.
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk?hl=en.


Peng Z.

Web & UX Desiger
http://nylira.com

When I try to add user_3 as a friend using the following code:

= link_to ‘Add Friend’, friendships_path(:friend_id => user), :method =>
:post
#=> which generates http://localhost:3000/friendships?friend_id=3

This is what happens in my server console:

Started GET “/friendships?friend_id=3” for 127.0,0,1 at 2010-03-05
00:37:45
AbstractController::ActionNotFound (the action ‘index’ could not be
found):

It looks like Rails is ignoring my :method => :post parameter.

On Thu, Mar 4, 2010 at 4:27 PM, Peng Z. [email protected] wrote:

new_friendship GET /friendships/new(.:format)
{:controller=>“sessions”, :action=>“index”}
edit_session GET /sessions/:id/edit(.:format)
PUT /users/:user_id/posts/:post_id/comments/:id(.:format)
{:controller=>“posts”, :action=>“create”}
GET /users(.:format)
{:controller=>“users”, :action=>“destroy”}
about /about

On Mar 2, 2010, at 9:40 PM, Peng Z. wrote:
rake routes
For more options, visit this group at


Peng Z.

Web & UX Desiger
http://nylira.com

Rakoth, awesome detective work. Friend-adding seems to be working now.

On Fri, Mar 5, 2010 at 2:15 AM, Rakoth [email protected] wrote:

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Peng Z.

Web & UX Desiger
http://nylira.com

There is a bug in prototype.js, therefore method handler dont work
correctly in rails.js
Try to install latest prototype from repository or use jquery.

https://rails.lighthouseapp.com/projects/8994/tickets/4013-link_to-with-method-doesnt-work

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