CODEWITHSUNDEEP
ruby-on-rails-3model-view-controller
t56k
t56k

Reputation: 7011

Rails: passing arguments through controller methods

Say I've got a standard new method in a controller:

def new
  @doc = Doc.new
  respond_to do |format|
    format.html
    format.json { render json: @doc }
  end
end

How would I facilitate passing an argument through it, i.e.:

def new(i)
  ...
end

To permit me to write something like this in the view:

<%= link_to(e.name, new_doc_path(e.id)) %>

Cheers!

Upvotes: 1

Views: 5612

Answers (1)

Mischa
Mischa

Reputation: 43318

Rails doesn't work like that. If you want to pass anything to the controller you have to use the params hash. In your example:

View:

<%= link_to(e.name, new_doc_with_parameter_path(e.id)) %>

Controller:

def new
  id = params[:id]
  # do something with `id`
end

For this to work you have to change your routes so that you can pass an id via the URL to your new action:

get "/docs/new/:id" => "docs#new", :as => :new_doc_with_parameter

Although the above should work, in your case it may be better to have a look at Nested Resources.

Upvotes: 7

Related Questions