cinema_films.rb

require 'nokogiri'
require 'open-uri'

class CinemaFilms
      belongs_to :cinemas
  def self.get_film_links

    doc = Nokogiri::XML(open('http://jagmit.co.uk/ruby/all-performances.xml'))
    doc.xpath('//film[@title]').map do |i|
      {title: i[:title], rating: i[:rating], release: i[:release], length: i[:length], poster: i[:poster], director: i[:director], synopsis: i[:synopsis], cast: i[:cast] }

    end
  end
  
  def self.store(arr)
    arr.each do |i|
      # cinema = Cinema.new(:name => i[:name], :url => i[:url])
      film = Film.new(i)
      film.save
    end
    
  end
  
end

cinema_site.rb

require 'nokogiri'
require 'open-uri'

class CinemaSite
      has_many :films
  def self.get_cinema_links

    doc = Nokogiri::XML(open('http://jagmit.co.uk/ruby/all-performances.xml'))
    doc.xpath('//cinema[@name]').map do |i|
      {cinema_id: i[:id], name: i[:name], url: i[:address], postcode: i[:postcode], telephone: i[:phone]}

    end
  end
  
  def self.store(arr)
    arr.each do |i|
      # cinema = Cinema.new(:name => i[:name], :url => i[:url])
      cinema = Cinema.new(i)
      cinema.save
    end
    
  end
  
end

cinemas_controller.rb

class CinemasController < ApplicationController
  # GET /cinemas
  # GET /cinemas.json
  def index
    @cinemas = Cinema.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @cinemas }
    end
  end

  # GET /cinemas/1
  # GET /cinemas/1.json
  def show
    @cinema = Cinema.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @cinema }
    end
  end

  # GET /cinemas/new
  # GET /cinemas/new.json
  def new
    @cinema = Cinema.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @cinema }
    end
  end

  # GET /cinemas/1/edit
  def edit
    @cinema = Cinema.find(params[:id])
  end

  # POST /cinemas
  # POST /cinemas.json
  def create
    @cinema = Cinema.new(params[:cinema])

    respond_to do |format|
      if @cinema.save
        format.html { redirect_to @cinema, notice: 'Cinema was successfully created.' }
        format.json { render json: @cinema, status: :created, location: @cinema }
      else
        format.html { render action: "new" }
        format.json { render json: @cinema.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /cinemas/1
  # PUT /cinemas/1.json
  def update
    @cinema = Cinema.find(params[:id])

    respond_to do |format|
      if @cinema.update_attributes(params[:cinema])
        format.html { redirect_to @cinema, notice: 'Cinema was successfully updated.' }
        format.json { head :ok }
      else
        format.html { render action: "edit" }
        format.json { render json: @cinema.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /cinemas/1
  # DELETE /cinemas/1.json
  def destroy
    @cinema = Cinema.find(params[:id])
    @cinema.destroy

    respond_to do |format|
      format.html { redirect_to cinemas_url }
      format.json { head :ok }
    end
  end
end

films_controller.rb

class FilmsController < ApplicationController
  # GET /films
  # GET /films.json
  def index
    @films = Cinemas.find(params[:cinema_id])
    @cinema = @films.cinema


    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @films }
    end
  end

  # GET /films/1
  # GET /films/1.json
  def show
    @cinemas = Cinema.find(params[:cinema_id])
    @film = Film.find(params[:id])
    

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @film }
    end
  end

  # GET /films/new
  # GET /films/new.json
  def new
        @cinemas = Cinema.find(params[:cinema_id])
        @film = Film.new
    

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @film }
    end
  end

  # GET /films/1/edit
  def edit
        @cinemas = Cinema.find(params[:cinema_id])
        @film = Film.find(params[:id])
  end

  # POST /films
  # POST /films.json
  def create
    @cinemas = Cinema.find(params[:cinema_id])
    @film = Film.new(params[:id])
    

    respond_to do |format|
      if @film.save
        format.html { redirect_to @film, notice: 'Film was successfully created.' }
        format.json { render json: @film, status: :created, location: @film }
      else
        format.html { render action: "new" }
        format.json { render json: @film.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /films/1
  # PUT /films/1.json
  def update
    @cinemas = Cinema.find(params[:cinema_id])
    @film = Film.find(params[:id])
    

    respond_to do |format|
      if @film.update_attributes(params[:film])
        format.html { redirect_to @film, notice: 'Film was successfully updated.' }
        format.json { head :ok }
      else
        format.html { render action: "edit" }
        format.json { render json: @film.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /films/1
  # DELETE /films/1.json
  def destroy
        @cinemas = Cinema.find(params[:cinema_id])
        @film = Film.find(params[:id])
        @film.destroy

    respond_to do |format|
      format.html { redirect_to films_url }
      format.json { head :ok }
    end
  end
end

routes.rb

Morevue::Application.routes.draw do 


  # The priority is based upon order of creation:
  # first created -> highest priority.

  # Sample of regular route:
  #   match 'products/:id' => 'catalog#view'
  # Keep in mind you can assign values other than :controller and :action

  # Sample of named route:
  #   match 'products/:id/purchase' => 'catalog#purchase', :as => :purchase
  # This route can be invoked with purchase_url(:id => product.id)

  # Sample resource route (maps HTTP verbs to controller actions automatically):
  #   resources :products

  # Sample resource route with options:
  #   resources :products do
  #     member do
  #       get 'short'
  #       post 'toggle'
  #     end
  #
  #     collection do
  #       get 'sold'
  #     end
  #   end

  # Sample resource route with sub-resources:
  #   resources :products do
  #     resources :comments, :sales
  #     resource :seller
  #   end

  # Sample resource route with more complex sub-resources
  #   resources :products do
  #     resources :comments
  #     resources :sales do
  #       get 'recent', :on => :collection
  #     end
  #   end

  # Sample resource route within a namespace:
  #   namespace :admin do
  #     # Directs /admin/products/* to Admin::ProductsController
  #     # (app/controllers/admin/products_controller.rb)
  #     resources :products
  #   end

  # You can have the root of your site routed with "root"
  # just remember to delete public/index.html.
  # root :to => 'welcome#index'

  # See how all your routes lay out with "rake routes"

  # This is a legacy wild controller route that's not recommended for RESTful applications.
  # Note: This route will make all actions in every controller accessible via GET requests.
  # match ':controller(/:action(/:id(.:format)))'
  resources :apps
  resources :cinemas
  resources :films
  
  resources :cinemas do 
    resources :films
  end

end