Calling Controller Method in link_to from the view

Question

My application has deals which have orders. In my admin area I want to be able to process the orders manually.

In my access/deals view

<%= link_to "Process Orders", "Not sure what I put here?" %>

in my access/deals_controller

def process_orders
   @deals = Deal.find(params[:id]
   @orders = @deals.orders.where("state" == ?, "pending")

   @orders.each do |order|
     #order processing code here
   end
end

How should I structure my link_to method to call the process_orders method in my admin/deals controller?

I thought something like

<%= link_to "Process Orders", access_deal_path(deal) %>

which give me the following url

 localhost:3000/access/deals/9

how do I get something like

localhost:3000/access/deals/9/process_orders

I'm also open to suggestions on moving the processing_orders method to model or helper if that is a better way of doing this.

My excerpt of my routes file.

  resources :deals do
    resources :orders
  end

  namespace "access" do
    resources :deals, :podcasts, :pages, :messages
  end

Answer 1

You can do 1 of the following:

Create a custom route:

match 'access/deals/:id/process_orders' => 'access/deals#process_orders', :as => 'access_deal'

then you can use this link_to:

<%= link_to "Process Orders", access_deal_path(deal) %>

OR

Add a member route:

namespace "access" do
    resources :deals do
        member do
            get :process_orders
        end
    end
end

Your link_to will look something like this:

<%= link_to "Process Orders", process_orders_access_deal_path(deal) %>