Rails 3 new method route

I created a scaffold class, now i want to add another method in the controller to it and provide a button link to it to call the method.

How do i do this.

Say the method is called 'new_method', what do i put in the erb and routes files in order to call this get method?开发者_运维技巧

Suppose your scaffold class is called Post, then in your routes you should have:

resources :posts

You then want to add a new_method, you have to choose whether this will work on the collection or on a single object.

On a collection

In your routes you write

resources :posts do
  collection do
    get :new_method
  end
end

And in your erb you would write

<%= link_to 'Do new-method', new_method_posts_path %>

Note, if you want to you could also use button_to instead of link_to if you prefer to have a button instead.

On a single object (member)

In your routes you write

resources :posts do
  member do
    get :new_method
  end
end

And in your erb you would write

<%= link_to 'Do new-method', new_method_post_path(@post) %>

Hope this helps.

match '/route' => 'controller#method'

It also depends; it may be cleaner to add the route as a collection or single resource. The the links below for further info :)

http://edgeguides.rubyonrails.org/routing.html

http://www.engineyard.com/blog/2010/the-lowdown-on-routes-in-rails-3/

For example, if you wanted a new routine /filtered, you have two options.

match '/filtered' => 'products#filtered'

In the erb you'd then use filtered_path as link_to's action/path parameter.

You could also add it to the product resource mapping.

resources :products do
  collection do
    get 'filtered'
  end
end

Or:

resources :products do
  get 'filtered', :on => :collection
end

Either will provide a new path (the names of all your paths are viewable by running the rake routes task) called filtered_products_path.

Please see http://guides.rubyonrails.org/routing.html#adding-more-restful-actions this will direct you to the solution.

Lets call the controller HomeController for this answer. Lets create a view file called new_method.html.erb. In the routes.rb create a route like this:

match 'new_method' => 'home#new_method'

I hope this will work.