CODEWITHSUNDEEP
ruby-on-railsroutesactiondispatch
sonalkr132
sonalkr132

Reputation: 1037

Overriding Named Route Parameters with nested resources

I want to override the :id param and this explains how. But doesn't really work with nested resources. My routes look like:

resources :users, param: :user_id do
  resources :projects, param: :project_id
end

this generates url of format: :user_user_id/:project_id. I would rather have it as :user_id/:project_id. Can someone please help?

Upvotes: 3

Views: 2122

Answers (2)

Misu
Misu

Reputation: 441

I know this is an old topic already answered, but as I see there is no explanation for why the code of @Зелёный works and not that of @sonalkr132 (I know this can seem off-topic, but @sonalkr132 posted another question which showed me that he didn't understand how it works)

When you create nested resources like projects inside users, rails you risk to have a path like users/:id/projects/:id, which is nonsense, so rails automatically adds a prefix to the first :id, and thus in params you have :user_id and :id (referencing to :project_id, but no doubt we are in the ProjectsController, so no further clarification is needed)

Now, when you say param: :user_id, this adds together with the prefix user_, that is why you get :user_user_id - you ask rails do the job twice.

Upvotes: 5

Roman Kiselenko
Roman Kiselenko

Reputation: 44360

This code:

resources :users do
  resources :projects, param: :project_id
end

Generate routes like:

    user_projects GET    /users/:user_id/projects(.:format)                          projects#index
                  POST   /users/:user_id/projects(.:format)                          projects#create
 new_user_project GET    /users/:user_id/projects/new(.:format)                      projects#new
edit_user_project GET    /users/:user_id/projects/:project_id/edit(.:format)         projects#edit
     user_project GET    /users/:user_id/projects/:project_id(.:format)              projects#show
                  PATCH  /users/:user_id/projects/:project_id(.:format)              projects#update
                  PUT    /users/:user_id/projects/:project_id(.:format)              projects#update
                  DELETE /users/:user_id/projects/:project_id(.:format)              projects#destroy

Tested. Rails '4.2.1'

Upvotes: 0

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