Routing to a new action of a nested resource


#1

Hi, can anyone help with a routing problem for nested resources:

My models are User (has_one :house) and House (belongs_to :user).

I have a houses_controller and a user_house_controller. house_controller
is for the admin to perform CRUD on houses; so users’ CRUD must go
through the user_house_controller.

The resources are nested like so:

map.resources :houses

map.resources :users do |users|
users.resource :house, :controller => ‘user_house’
end

So after a new user registers I want to send him to the form for the his
house, ie

http://localhost:3000/users/21/gym/new

I’m having trouble with generating this URL programmatically. In my
users_controller I have:

def create
@user = User.new(params[:user]) #user registered, now register his
house
redirect_to new_gym_url(:user_id => @user)

I know when one has a nested resource then the URL generator takes 2
arguments: The nested-under model and the nested model. So according to
this logic, the URL helper should look like:

new_gym_url(:user_id => @user, :id => house)

But then I will be referring to a house that hasn’t been created yet!
When I just use:

new_gym_url(:user_id => @user) or new_gym_url

I get redirected to the houses_controller#new, and I want to use
user_house_controller.

This is about to drive me nuts; so please explain!

/ Vahagn


#2

PS! Correct url is http://localhost:3000/users/21/house/new

:slight_smile:


#3

Issue solved!

users.resource :houses, :controller => ‘user_house’

instead of:

users.resource :house, :controller => ‘user_house’
end

Apparently the resources are always plural, regardless that a user only
has one house.

/V.


#4

On Nov 4, 8:08 am, Vahagn H. <rails-mailing-l…@andreas-
s.net> wrote:

has one house.

/V.

Hi Vahagn. Resources don’t have to be plural. For example, one of my
apps has users, and when they login, they access their account at this
path:
/account/
To do this, I added the following to routes.rb:
map.resource :account
You just need to make sure that all of your files and classes have
proper pluralisation. Thus, I have AccountsController.

For your question, I would think that you’d need:

config/routes.rb

map.resources :users do |users|
users.resource :house, :controller => ‘user_house’
end

app/controllers/houses_controller.rb

class HousesController < ApplicationController

In other words, make sure it’s “HousesController” and
“houses_controller.rb” (plural), not “HouseController” or
“house_controller.rb” (singular).

Once you have that working properly, you can generate URLs and paths
to a user’s house like this:
user_house_path
user_house_url

I hope that helps,
Nick


#5

Hi Nick,-

thanks for your comment, I appreciate it. I’ve worked around the problem
but it is definitely helpful. Previously I thought that pluralization
patterns in the routes file must follow those of the controllers but now
I can see it’s not the case - the two things are decoupled and the most
important thing is the proper pluralization of the controllers.

All the best,
Vahagn

Nick H. wrote:

On Nov 4, 8:08�am, Vahagn H. <rails-mailing-l…@andreas-
s.net> wrote:

has one house.

/V.

Hi Vahagn. Resources don’t have to be plural. For example, one of my
apps has users, and when they login, they access their account at this
path:
/account/
To do this, I added the following to routes.rb:
map.resource :account
You just need to make sure that all of your files and classes have
proper pluralisation. Thus, I have AccountsController.

For your question, I would think that you’d need:

config/routes.rb

map.resources :users do |users|
users.resource :house, :controller => ‘user_house’
end

app/controllers/houses_controller.rb

class HousesController < ApplicationController

In other words, make sure it’s “HousesController” and
“houses_controller.rb” (plural), not “HouseController” or
“house_controller.rb” (singular).

Once you have that working properly, you can generate URLs and paths
to a user’s house like this:
user_house_path
user_house_url

I hope that helps,
Nick