Create cities and categories list page

app/assets/javascripts/categories.coffee

+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/javascripts/cities.coffee

+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/categories.scss

+// Place all the styles related to the Categories controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/assets/stylesheets/cities.scss

+// Place all the styles related to the Cities controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/categories_controller.rb

+class CategoriesController < ApplicationController
+  def show
+    @categories = Category.all
+  end
+end

app/controllers/cities_controller.rb

+class CitiesController < ApplicationController
+  def show
+    @areas = Area.all
+  end
+end

app/helpers/categories_helper.rb

+module CategoriesHelper
+end

app/helpers/cities_helper.rb

+module CitiesHelper
+  def get_city_by_area(area)
+    City.where(area: area)
+  end
+end

app/views/categories/show.html.erb

+<%- provide('title', 'Industries') -%>
+<div class="center jumbotron">
+  <div class="well">
+    <p> Industry list </p>
+    <div class="list_categories">
+      <div class="row">
+        <%- @categories.each do |category| -%>
+          <%- if category.job_category.count > 0 -%>
+            <div class="col-md-3">
+              <%= category.name %>
+              (<%= pluralize(category.job_category.count, 'job') %>)
+            </div>
+          <%- end -%>
+        <%- end -%>
+      </div>
+    </div>
+  </div>
+</div>

app/views/cities/show.html.erb

+<%- provide(:title, 'Cities') -%>
+<div class="center jumbotron">
+  <div class="well">
+    <p> City list </p>
+    <div class="list_areas">
+      <div class="row">
+        <%- @areas.each do |area| -%>
+            <div class="col-md-6">
+              <%= area.name %>
+            </div>
+        <%- end -%>
+      </div>
+    </div>
+  </div>
+  <%- @areas.each do |area| -%>
+    <div class="well">
+      <p> <%= area.name %> </p>
+      <div class="row">
+        <%- get_city_by_area(area).each do |city| -%>
+          <%- if city.job.count > 0 -%>
+            <div class="col-md-4">
+              <%= city.name %>
+              (<%= pluralize(city.job.count, 'job') %>)
+            </div>
+          <%- end -%>
+        <%- end -%>
+      </div>
+    </div>
+  <%- end -%>
+</div>

app/views/static_pages/home.html.erb

@@ -33,7 +33,7 @@
     </div>
   </div>
   <div class="well">
-    <p> Top cities </p><%= link_to 'All cities', '#' %>
+    <p> Top cities <%= link_to 'All cities', cities_path %> </p>
     <div class="top_cities">
       <div class="row">
         <%- @top_cities.limit(9).each do |city| -%>
@@ -46,7 +46,7 @@
     </div>
   </div>
   <div class="well">
-    <p> Top industries </p><%= link_to 'All industries', '#' -%>
+    <p> Top industries <%= link_to 'All industries', categories_path -%> </p>
     <div class="top_industries">
       <div class="row">
         <%- @top_categories.limit(9).each do |category| -%>

config/routes.rb

 Rails.application.routes.draw do
+
   root 'static_pages#home'
 
   get 'static_pages/home'
   get '/register', to: 'users#new'
+  get '/cities', to: 'cities#show'
+  get '/categories', to: 'categories#show'
 
   resource :users
+  resource :cities
 
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end

test/controllers/categories_controller_test.rb

+require 'test_helper'
+
+class CategoriesControllerTest < ActionDispatch::IntegrationTest
+  test "should get show" do
+    get categories_show_url
+    assert_response :success
+  end
+
+end

test/controllers/cities_controller_test.rb

+require 'test_helper'
+
+class CitiesControllerTest < ActionDispatch::IntegrationTest
+  test "should get show" do
+    get cities_show_url
+    assert_response :success
+  end
+
+end