paircolumbus · levikl · Jan 25, 2018 · mikegee · Jan 30, 2018 · mikegee
diff --git a/source/Gemfile b/source/Gemfile
@@ -16,8 +16,6 @@ gem 'coffee-rails', '~> 4.0.0'
 
 # Use jquery as the JavaScript library
 gem 'jquery-rails'
-# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
-gem 'turbolinks'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.0'
 # bundle exec rake doc:rails generates the API under doc/api.
@@ -38,4 +36,3 @@ gem 'spring',        group: :development
 # Use debugger
 # gem 'debugger', group: [:development, :test]
  gem 'rspec-rails', group: [:development, :test]
-
diff --git a/source/Gemfile.lock b/source/Gemfile.lock
@@ -113,8 +113,6 @@ GEM
     thor (0.19.1)
     thread_safe (0.3.4)
     tilt (1.4.1)
-    turbolinks (2.4.0)
-      coffee-rails
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     uglifier (2.5.3)
@@ -134,5 +132,4 @@ DEPENDENCIES
   sdoc (~> 0.4.0)
   spring
   sqlite3
-  turbolinks
   uglifier (>= 1.3.0)
diff --git a/source/app/assets/javascripts/application.js b/source/app/assets/javascripts/application.js
@@ -12,5 +12,4 @@
 //
 //= require jquery
 //= require jquery_ujs
-//= require turbolinks
 //= require_tree .
diff --git a/source/app/controllers/urls_controller.rb b/source/app/controllers/urls_controller.rb
@@ -1,2 +1,37 @@
 class UrlsController < ApplicationController
+
+  # GET /urls
+  def index
+    @urls = Url.all
+    @url = Url.new
+  end
+
+  # POST /urls
+  def create
+    @url = Url.new(url_params)
+
+    respond_to do |format|
+      if @url.save
+        format.html { redirect_to root_path, notice: 'Url was successfully created.' }
+      else
+        format.html { redirect_to root_path, notice: @url.errors.full_messages }
+      end
+    end
+  end
+
+  # GET /:shortened_url
+  def redirect
+    @url = Url.where(shortened_url: params[:shortened_url]).take
+    if @url != nil
+      @url.update_attribute(:click_count, @url.click_count + 1)
+      redirect_to @url.original_url
+    else
+      redirect_to root_path, notice: 'We couldn\'t find a link for the bitly URL you clicked.'
+    end
+  end
+
+  private
+    def url_params
+      params.require(:url).permit(:original_url, :shortened_url, :click_count)
+    end
 end
diff --git a/source/app/models/url.rb b/source/app/models/url.rb
@@ -0,0 +1,41 @@
+require 'uri'
+require 'net/http'
+
+class Url < ActiveRecord::Base
+  ALPHANUMERIC_CHARACTERS = (('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a)
+
+  validates_presence_of :original_url
+  validates_format_of :original_url, :with => URI::regexp, :message => "must be a valid Ruby URI"
+  validate :original_url_starts_with_http_or_https
+  validate :original_url_must_return_a_response
+
+  before_save :shorten_url
+
+  def original_url_starts_with_http_or_https
+    if not original_url =~ /^https?:\/\//
+      errors.add(:original_url, "must start with http:// or https://")
+    end
+  end
+
+  def original_url_must_return_a_response
+    return unless original_url.present? && original_url =~ URI::regexp(['http', 'https'])
+    uri = URI.parse(original_url)
+    response = Net::HTTP.get_response(uri)
+  rescue URI::InvalidURIError
+    errors.add(:original_url, "must respond to a HTTP request")
+  rescue Errno::ECONNREFUSED
+    errors.add(:original_url, "must respond to a HTTP request")
+  rescue SocketError
+    errors.add(:original_url, "must respond to a HTTP request")
+  end
+
+  def shorten_url
+    self.shortened_url = generate_key unless self.shortened_url
+  end
+
+  def generate_key
+    key = ""
+    7.times { key << ALPHANUMERIC_CHARACTERS.sample }
+    key
+  end
+end
diff --git a/source/app/views/layouts/application.html.erb b/source/app/views/layouts/application.html.erb
@@ -2,8 +2,8 @@
 <html>
 <head>
   <title>Source</title>
-  <%= stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true %>
-  <%= javascript_include_tag 'application', 'data-turbolinks-track' => true %>
+  <%= stylesheet_link_tag    'application', media: 'all' %>
+  <%= javascript_include_tag 'application' %>
   <%= csrf_meta_tags %>
 </head>
 <body>

diff --git a/source/app/views/urls/_form.html.erb b/source/app/views/urls/_form.html.erb
@@ -0,0 +1,19 @@
+<%= form_for(@url) do |f| %>
+  <% if @url.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(@url.errors.count, "error") %> prohibited this url from being saved:</h2>
+
+      <ul>
+      <% @url.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="field">
+    <%= f.text_field :original_url %>
+    <%= f.hidden_field :click_count, value: 0 %>
+    <%= f.submit 'Shorten' %>
+  </div>
+<% end %>
diff --git a/source/app/views/urls/index.html.erb b/source/app/views/urls/index.html.erb
@@ -0,0 +1,27 @@
+<h2>Shorten a link</h2>
+
+<%= render 'form' %>
+
+<br><hr>
+
+<p id="notice"><%= notice %></p>
+
+<h2>Your shortened links</h2>
+
+<table>
+  <tbody>
+    <% @urls.each do |url| %>
+      <tr>
+        <td><%= url.original_url %></td>
+      </tr>
+      <tr>
+        <td><%= link_to "http://localhost:3000/#{url.shortened_url}", "http://localhost:3000/#{url.shortened_url}" %></td>
+        <td>&nbsp;&nbsp;&nbsp;</td>
+        <td><b>Clicks:</b> <%= url.click_count %></td>
+      </tr>
+      <tr>
+        <td>&nbsp;</td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
diff --git a/source/config/routes.rb b/source/config/routes.rb
@@ -1,56 +1,5 @@
 Rails.application.routes.draw do
-  # The priority is based upon order of creation: first created -> highest priority.
-  # See how all your routes lay out with "rake routes".
-
-  # You can have the root of your site routed with "root"
-  # root 'welcome#index'
-
-  # Example of regular route:
-  #   get 'products/:id' => 'catalog#view'
-
-  # Example of named route that can be invoked with purchase_url(id: product.id)
-  #   get 'products/:id/purchase' => 'catalog#purchase', as: :purchase
-
-  # Example resource route (maps HTTP verbs to controller actions automatically):
-  #   resources :products
-
-  # Example resource route with options:
-  #   resources :products do
-  #     member do
-  #       get 'short'
-  #       post 'toggle'
-  #     end
-  #
-  #     collection do
-  #       get 'sold'
-  #     end
-  #   end
-
-  # Example resource route with sub-resources:
-  #   resources :products do
-  #     resources :comments, :sales
-  #     resource :seller
-  #   end
-
-  # Example resource route with more complex sub-resources:
-  #   resources :products do
-  #     resources :comments
-  #     resources :sales do
-  #       get 'recent', on: :collection
-  #     end
-  #   end
-
-  # Example resource route with concerns:
-  #   concern :toggleable do
-  #     post 'toggle'
-  #   end
-  #   resources :posts, concerns: :toggleable
-  #   resources :photos, concerns: :toggleable
-
-  # Example resource route within a namespace:
-  #   namespace :admin do
-  #     # Directs /admin/products/* to Admin::ProductsController
-  #     # (app/controllers/admin/products_controller.rb)
-  #     resources :products
-  #   end
+  resources :urls, only: [:index, :create]
+  get '/:shortened_url', to: 'urls#redirect'
+  root 'urls#index'
 end
diff --git a/source/db/migrate/20180125164843_create_urls.rb b/source/db/migrate/20180125164843_create_urls.rb
@@ -0,0 +1,10 @@
+class CreateUrls < ActiveRecord::Migration
+  def change
+    create_table :urls do |t|
+      t.string :original_url
+      t.string :shortened_url
+
+      t.timestamps
+    end
+  end
+end
diff --git a/source/db/migrate/20180125194335_add_click_count_to_urls.rb b/source/db/migrate/20180125194335_add_click_count_to_urls.rb
@@ -0,0 +1,5 @@
+class AddClickCountToUrls < ActiveRecord::Migration
+  def change
+    add_column :urls, :click_count, :integer
+  end
+end
diff --git a/source/db/schema.rb b/source/db/schema.rb
@@ -0,0 +1,24 @@
+# encoding: UTF-8
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20180125194335) do
+
+  create_table "urls", force: true do |t|
+    t.string   "original_url"
+    t.string   "shortened_url"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.integer  "click_count"
+  end
+
+end