Rails::Engine namespacing controller and models - ruby-on-rails-3

Question

I followed the following tutorial: http://www.themodestrubyist.com/2010/03/05/rails-3-plugins---part-2---writing-an-engine/
And it all works great. I namespaced the controller using
#app/controller/authr/accounts_controller.rb
module Authr
class AccountsController < ApplicationController
unloadable
def new
#account = Account.new
end
def create
#account = Account.new(params[:account])
if #account.save
redirect_to '/'
else
render :action => :new
end
end
end
end
And in the tutorial he didn't namespace the model. I want to namespace my model though so it doesn't collide with host apps. So i tried the following:
#app/models/authr/account.rb
module Authr
class Account < ActiveRecord::Base
attr_accessor :password
validates_confirmation_of :password
end
end
This is my view, with a simple form_for that should go to accounts_path
#app/views/authr/accounts/new.html.erb
<%= form_for(#account) do |f|%>
<p>
<%= f.label :uname, "Username"%>
<%= f.text_field :uname%>
</p>
<p>
<%= f.label :password, 'Password'%>
<%= f.password_field :password%>
</p>
<p>
<%= f.submit "Submit"%>
</p>
<% end %>
But when i use my namespaced model i get the following error:
undefined method `authr_accounts_path' for #<#<class:0x1038f54e0>:0x1038f3780>
The object created by the new method (#account = Account.new) results in this :
<Authr::Account id: nil, uname: nil, hashed_password: nil, remember_token: nil, remember_expiry: nil, created_at: nil, updated_at: nil>
Routes file: (This works when i dont namespace the model.)
Rails.application.routes.draw do |map|
resources :accounts, :only => [:new, :create],
:controller => "authr/accounts"
end
So this is a routing thing. When i dont namespace the model all works fine but when i namespace it it doesnt work. Then i tried the following:
#routes.rb
Rails.application.routes.draw do |map|
scope "authr", :module => :authr, :as => "authr" do
resources :accounts
end
end
Now i get the form without the routing error. But when i try to submit the form the object isn't saved.
Started POST "/authr/accounts" for 127.0.0.1 at Mon Mar 28 18:51:12 +0200 2011
Processing by Authr::AccountsController#create as HTML
Parameters: {"commit"=>"Submit", "authenticity_token"=>"cPH8ZmNmgoT84UMnYBoM38di+/OZQmuGQTrSv3HhFR4=", "utf8"=>"✓", "authr_account"=>{"uname"=>"usrrrrrrrrrrrrnmmmmeee", "password"=>"[FILTERED]"}}
SQL (48.0ms) BEGIN
SQL (0.5ms) SHOW TABLES
SQL (13.2ms) describe `accounts`
AREL (0.3ms) INSERT INTO `accounts` (`updated_at`, `created_at`, `remember_expiry`, `uname`, `remember_token`, `hashed_password`) VALUES ('2011-03-28 16:51:12', '2011-03-28 16:51:12', NULL, NULL, NULL, NULL)
SQL (0.4ms) COMMIT
Redirected to http://localhost:3000/
I know that i'm doing #account = Account.new(params[:account]) and if i change it to Account.new(params[:authr_account] that i should work but i want to user params[:account] that should work right? Because the controller is namespaced as well...
Then i found something about isolated_name space so i tried this:
#lib/authr/engine.rb
require "authr"
require "rails"
module Authr
class Engine < Rails::Engine
isolate_namespace Authr
# engine_name :authr #deprecated?
end
end
and i changed my routes to:
Rails.application.routes.draw do |map|
resources :accounts, :only => [:new, :create],
:controller => "authr/accounts"
end
But this gives me the following error:
/Library/Ruby/Gems/1.8/gems/authr3-0.1.0/lib/authr/engine.rb:6: undefined method `isolate_namespace' for Authr::Engine:Class (NoMethodError)
I tried everything and i looked at other gems and they have namespaced models. I am convinced that i need to namespace my models just to be sure that they don't conflict with the host application. I want to use restfullroutes but i don't know how i can fix this problem.
I am using:
Daniel-Zs-MacBook-Pro:gem_test Daniel$ ruby -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
Daniel-Zs-MacBook-Pro:gem_test Daniel$ rails -v
Rails 3.0.3
Thanks for any advice / help

Answer 1

Possibly a typo?
scope "authr", :module => :authr, :as => "auth" do
change to
scope "authr", :module => :authr, :as => "authr" do #you are missing an r
If its just a typo in this post and you have it correct in the engine, then what do you get when you run "rake routes" from the parent application using that same scope in the engine?
Also, I think isolate_namespace is only in edge rails right now. 3.1 is slated to have alot of new engine goodies including this.