Rails summary

gistfile1.txt

COMMANDS

rails new demo #Create a new rails project under 'demo'

rails server #Start a local server to test the project, port 3000

rails generate controller ControllerName action1 action2 
  # For example 'rails generate controller say hello goodbye' gives
  # say/hello and say/goodbye links, which are implemented by a class 
  # app/controllers/say_controller.rb with hello and goodbye methods.
  # app/views/say/hello.html.erb will contain the template

rails generate scaffold ModelName fieldname:fieldtype
  # e.g 'rails generate scaffold Product 
  #      title:string description:text price:decimal'
  #
  
rake db:migrate # When changing a file in db/migrate

rake test # Run the tests

rake db:seed # Put in the data in db/seeds.rb into the database

rails generate migration add_quantity_to_line_item quantity:integer #parses the
name to understand we are working on the line_item table

rails runner script.rb #Run script with your rails project context
rails console # Interactive ruby command line with your project context

rake doc:app # generate application rubydoc
rake routes # Show the REST routes configured
rake --tasks, rake --describe # learn about the tasks available

FILES:
db/seeds.rb # Starting database data, for seeing stuff
database.yml # database connection configuration
app/views/layouts/application.html.erb # headers of HTML files (for CSS
declarations)
public/stylesheets # Directory for CSS files
app/controllers/application_controller.rb #Base class for all controllers, so
                                          #helper methods should go here

CODE:

ActiveRecord
validates
default_scope
has_many # for foreign keys

ActiveSupport::TestCase
fixtures

fixtures YML

in config/routes.rb you can change the root: directive to control where the
default (index) will go to

UI:
button_to, link_to, img_tag functions
controller_to_path "alias"
sanitize, truncate, strip_tags, pluralize functions

-*-*-*-

rails new project
cd project
rails generate scaffold Post post_name:string