6.3 Iteration A2: Add a Missing Column 6.1 Iteration A1: Getting Something Running

ls -p

app/	 config.ru  doc/     lib/  public/   README   test/  vendor/

config/  db/	    Gemfile  log/  Rakefile  script/  tmp/

rails generate scaffold product title:string description:text image_url:string

      invoke  active_record

      create    db/migrate/20120629191040_create_products.rb

      create    app/models/product.rb

      invoke    test_unit

      create      test/unit/product_test.rb

      create      test/fixtures/products.yml

       route  resources :products

      invoke  scaffold_controller

      create    app/controllers/products_controller.rb

      invoke    erb

      create      app/views/products

      create      app/views/products/index.html.erb

      create      app/views/products/edit.html.erb

      create      app/views/products/show.html.erb

      create      app/views/products/new.html.erb

      create      app/views/products/_form.html.erb

      invoke    test_unit

      create      test/functional/products_controller_test.rb

      invoke    helper

      create      app/helpers/products_helper.rb

      invoke      test_unit

      create        test/unit/helpers/products_helper_test.rb

      invoke  stylesheets

      create    public/stylesheets/scaffold.css

rake db:migrate

mv 20120629191040_create_products.rb 20110711000001_create_products.rb

==  CreateProducts: migrating =================================================

-- create_table(:products)

   -> 0.0030s

==  CreateProducts: migrated (0.0032s) ========================================

sqlite3> select version from schema_migrations

version = 20110711000001

Start the server.

edit app/views/products/_form.html.erb

<%= form_for(@product) do |f| %>

  <% if @product.errors.any? %>

    <div id="error_explanation">

      <h2><%= pluralize(@product.errors.count, "error") %> prohibited this product from being saved:</h2>

      <ul>

      <% @product.errors.full_messages.each do |msg| %>

        <li><%= msg %></li>

      <% end %>

      </ul>

    </div>

  <% end %>

  <div class="field">

    <%= f.label :title %><br />

    <%= f.text_field :title %>

  </div>

  <div class="field">

    <%= f.label :description %><br />

    <%= f.text_area :description, :rows => 6 %>

  </div>

  <div class="field">

    <%= f.label :image_url %><br />

    <%= f.text_field :image_url %>

  </div>

  <div class="actions">

    <%= f.submit %>

  </div>

<% end %>

get /products

get /products/new

post /products

• product[image_url] => /images/svn.jpg
• product[description] => <p> This book is a recipe-based approach to using Subversion that will get you up and running quickly---and correctly. All projects need version control: it's a foundational piece of any project's infrastructure. Yet half of all project teams in the U.S. dont use any version control at all. Many others dont use it well, and end up experiencing time-consuming problems. </p>
• product[title] => Pragmatic Version Control

get http://localhost:3000/products/1

get /products

sqlite3 db/development.sqlite3 .schema

CREATE TABLE "products" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, "title" varchar(255), "description" text, "image_url" varchar(255), "created_at" datetime, "updated_at" datetime);

CREATE TABLE "schema_migrations" ("version" varchar(255) NOT NULL);

CREATE UNIQUE INDEX "unique_schema_migrations" ON "schema_migrations" ("version");

rake test

Loaded suite /home/rubys/.rvm/gems/ruby-1.8.7-p352/gems/rake-0.9.2.2/lib/rake/rake_test_loader

Started

Finished in 0.152594 seconds.

1 tests, 1 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications

0% passed

6.55 tests/s, 6.55 assertions/s

Loaded suite /home/rubys/.rvm/gems/ruby-1.8.7-p352/gems/rake-0.9.2.2/lib/rake/rake_test_loader

Started

Finished in 0.501399 seconds.

7 tests, 10 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications

0% passed

13.96 tests/s, 19.94 assertions/s

6.3 Iteration A2: Add a Missing Column 6.1 Iteration A1: Getting Something Running