Ruby On Rails: ActionController::RoutingError No route matches, action show - ruby-on-rails

Question

I am using this example for uploading files in Ruby on Rails.
I have some problems with routing:
Error:
ActionController::RoutingError (No route matches {:action=>"show", :controller=>"cars", :locale=>#<Car id: 19, car_name: "bwl",, created_at: "2013-01-27 19:12:13", updated_at: "2013-01-27 19:12:13">}):
app/models/arraydb.rb:46:in `to_jq_car'
I have found out that the problem is in the to_jq_car function and in the line:
"delete_url" => car_path(self)
But I have no idea how to correct it.
routes.rb:
resources :cars
match '/show', :to =>'car#index'
root :to => 'cars#index'
cars_controllers.rb
class CarsController < ApplicationController
def index
#cars = Car.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #cars.map{|car| car.to_jq_car } }
end
end
def show
#car = Car.find(params[:id])
respond_to do |format|
format.html
format.json { render json: #car }
end
end
end
and in car.rb I have the following function:
def to_jq_car
{
"name" => (read_attribute(:arraydb_name)).split(".").first,
"url" => car.url(:original),
"delete_url" => car_path(self),
"delete_type" => "DELETE",
}
end
rake routes:
cars GET (/:locale)/cars(.:format) cars#index {:locale=>/en|de|es|ru|zh_cn|ar/}
POST (/:locale)/cars(.:format) cars#create {:locale=>/en|de|es|ru|zh_cn|ar/}
new_car GET (/:locale)/cars/new(.:format) cars#new {:locale=>/en|de|es|ru|zh_cn|ar/}
edit_car GET (/:locale)/cars/:id/edit(.:format) cars#edit {:locale=>/en|de|es|ru|zh_cn|ar/}
car GET (/:locale)/cars/:id(.:format) cars#show {:locale=>/en|de|es|ru|zh_cn|ar/}
PUT (/:locale)/cars/:id(.:format) cars#update {:locale=>/en|de|es|ru|zh_cn|ar/}
DELETE (/:locale)/cars/:id(.:format) cars#destroy {:locale=>/en|de|es|ru|zh_cn|ar/}
show (/:locale)/show(.:format) car#index {:locale=>/en|de|es|ru|zh_cn|ar/}
root /(:locale)(.:format) cars#index {:locale=>/en|de|es|ru|zh_cn|ar/}
Thanks in advance

Answer 1

error causes by :locale param
you have in routes
cars#index {:locale=>/en|de|es|ru|zh_cn|ar/}
so :locale value must be one of this in list en|de|es|ru|zh_cn|ar
and you need to find where you pass this param to controller and correct it
you can use (or maybe you already use) in ApplicationController
def default_url_options
{:locale => I18n.locale}
end