The first object I’m going to create is a Team object. It only has one property: name. I opened a DOS window, navigated to my app’s directory and typee:
C:\Ruby186\tenthhole>ruby script/generate scaffold Team name:string
exists app/models/
exists app/controllers/
exists app/helpers/
create app/views/teams
exists app/views/layouts/
exists test/functional/
exists test/unit/
create test/unit/helpers/
exists public/stylesheets/
create app/views/teams/index.html.erb
create app/views/teams/show.html.erb
create app/views/teams/new.html.erb
create app/views/teams/edit.html.erb
create app/views/layouts/teams.html.erb
create public/stylesheets/scaffold.css
create app/controllers/teams_controller.rb
create test/functional/teams_controller_test.rb
create app/helpers/teams_helper.rb
create test/unit/helpers/teams_helper_test.rb
route map.resources :teams
dependency model
exists app/models/
exists test/unit/
exists test/fixtures/
create app/models/team.rb
create test/unit/team_test.rb
create test/fixtures/teams.yml
create db/migrate
create db/migrate/20100614005533_create_teams.rb
Generating a scaffold will create default code that, while not exactly what you want, will give you working code right off the bat. In addition to the models, views, and controllers it creates, it also creates a database migration file. To get my database up to date, I have to run the migration. From the command prompt:
C:\Ruby186\tenthhole>rake db:migrate
(in C:/Ruby186/tenthhole)
== CreateTeams: migrating =========
-- create_table(:teams)
-> 0.0010s
== CreateTeams: migrated (0.0030s)
Let’s see where I am now. From the command prompt, I start the web server (ruby script/server) and point my browser to http://localhost:3000.
Not much there, but no errors. Now I can start adding teams by clicking on the New Team link.
No fancy names here, just numbers. And one ‘team’ that all available substitutes will belong to. That’s it for teams. I can add, delete, and edit the teams all with the code the scaffolding generator created.
