Rails introduction
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Transcript of Rails introduction
Rails Introduction
for those who have heard a lot about it
Rails Introduction
Rails Introduction
application structure
MVC
Model
app/models/user.rb
class User < ActiveRecord::Baseend
class User < ActiveRecord::Baseattr_accessible :email, :password
validates :email, presence: trueend
class User < ActiveRecord::Baseattr_accessible :email, :password
validates :email, presence: true
has_many :blog_postsend
Controller
app/controllers/users_controller.rb
class UsersController < ApplicationControllerend
app/controllers/application_controller.rb
class UsersController < ApplicationControllerdef indexenddef showenddef createenddef editenddef updateenddef destroyendend
View
app/views/users/index.html.hamlErb, HAML, Slimhttp://html2haml.heroku.com
class UsersController < ApplicationControllerdef index@users = User.allendend
- @users.each do |user|%h1= user.email%h1= user.password
app/controllers/users_controller.rb
app/views/users/index.html.haml
assets
app/assets/javascriptsjavascript, coffeescript
app/assets/stylesheetsCSS, SASS, LESS
app/assets/imagesjpg, png, gif
decorators
app/decoratorsgem 'draper'
class Student < ActiveRecord::Baseattr_accessible :first_name, :middle_name, :last_name
validates :email, presence: true
has_many :blog_posts
def fio#{first_name} #{middle_name} #{last_name}end
def with_first_name(first_name)User.find_by_first_name first_nameendend
app/models/student.rb
decorators
app/decoratorsgem 'draper'
class Student < ActiveRecord::Baseattr_accessible :first_name, :middle_name, :last_name
validates :email, presence: true
has_many :blog_posts
end
class StudentDecorator < Draper::Basedecorates :member
def fio#{model.first_name} #{model.middle_name} #{model.last_name}end
def with_first_name(first_name)User.find_by_first_name first_nameendend
app/decorators/student_decorator.rb
uploaders
app/uploadersgem 'carrierwave'gem 'paperclip'
layouts
app/views/layouts/application.html.haml
%html %head %title SkyDance = stylesheet_link_tag "bootstrap_and_overrides", :media => "all" = stylesheet_link_tag "application", :media => "all" = javascript_include_tag "application" = csrf_meta_tags %body = yield
routes
config/routes.rb
Application.routes.draw do
root :to => "welcome#index"
match "admin" => "admins#login" get "schedule" => "lessons#schedule"
resources :groups, :except => [:show, :index] do member do resources :lessons, :except => [:show, :index] end end
resources :teachers do member do resources :photos, :except => [:show, :index, :edit] do collection do get 'admins' end end end endend
Http-requests
GET
POST
PUT
DELETE
http-statuses
200
404
403
500
locales
migrations
db/migrate
$ rails g migration add_sleep_to_my_life
db/migrate/add_sleep_to_my_life.rb
class AddSleepToMyLife < ActiveRecord::Migrationdef changeadd_column :my_lifes, :sleep, :fuck_youadd_column :table, :column_name, :column_typeendend
db/migrate
$ rails g migration add_sleep_to_my_life
db/migrate
$ rails g migration add_sleep_to_my_life
tests
TDD test-driven development http://travis-ci.orghttp://coveralls.iogem 'minitest'
tests
class UsersControllerTest < ApplicationController::TestCasetest should get index doget :indexassert_response :successendend
test/functional/users_controller_test.rb
services
http://travis-ci.org
http://coveralls.io
http://codeclimate.com
http://github.com
thnx
