CODEWITHSUNDEEP
ruby-on-rails
pangpang
pangpang

Reputation: 8821

how to design routes for nesting resources in rails?

I want to create a web application.

  1. one user has many articles;
  2. one article has many comments;

The codes as below:

class User
  .....
  has_many :articles
end

class Article
 ....
 belongs_to :user
 embeds_many :comments
end

class Comment
  ....
  embedded_in :article, inverse_of: :comments
end

I want to use the nesting routes:

resources :users do
  resources :articles do
    resource :comments do
  end
end

But Rails Guide told us to avoid multiple nesting resource. Anyone can give me some good ideas. Thanks in advance!

Upvotes: 0

Views: 57

Answers (3)

tomsoft
tomsoft

Reputation: 4577

Yes, you should avoid to nest more that one ressource in another.

You can do this:

resources :users do
  resources :articles 
end

And this:

resources :articles do
  resource :comments
end

So a user has many articles, and articles have many comments.

Upvotes: 0

chumakoff
chumakoff

Reputation: 7034

You can avoid deep nesting using Shallow Nesting.

resources :users do
  resources :articles, shallow: true do
    resources :comments
  end
end

It will give the same routes as:

resources :users do
  resources :articles, only: [:index, :new, :create]
end

resources :articles, only: [:show, :edit, :update, :destroy]
  resource :comments, only: [:index, :new, :create]
end

resource :comments, only: [:show, :edit, :update, :destroy]

and urls like this:

users/1
users/1/articles
articles/1
articles/1/edit
articles/1/comments
comments/1
comments/1/edit

You can read more about this here http://guides.rubyonrails.org/routing.html#nested-resources and play with it.

If you want to do it more simple and have urls like this (deeper nesting): 

users/1
users/1/articles/1
users/1/articles/1/edit
articles/1/comments
articles/1/comments/1
articles/1/comments/1/edit

then you can do it this way:

resources users do
  resources :articles
end

resources articles, only: [] do
  resources :comments
end

Good luck and have fun!

Upvotes: 1

kjmagic13
kjmagic13

Reputation: 1318

Since the relationship between users and articles is not many to many it would be redundant to specify routes for each article and it's comments from the parent.

resources users do
    resources :articles
end

resources articles, only: [] do
    resources :comments
end

Upvotes: 0

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