10.0 Rails Cheatsheet

• comment out coffeescript

• add rspec-rails

• bundle

• rails generate rspec:install

• rails g rspec:install

• bin/rails g model Movie title:string genre:string director:string release_year:integer plot:text

• in RSpec, . is a class method and # is an instance method

• run tests: bin/rake spec

Database Setup/Creation

• bin/rake db:create
• bin/rake db:migrate
• bin/rake db:test:prepare

RSpec Unit Test

Model

class Movie < ActiveRecord::Base

    def to_s
        self.title
    end

end

Test

require 'rails_helper'

RSpec.describe Movie, type: :model do
  #pending "add some examples to (or delete) #{__FILE__}"

    describe 'given a movie' do

        before do
            @movie = Movie.new(title: "Empire Strikes Back")
        end

        describe '#to_s' do
            it 'displays the title of the movie' do
                expectation = 'Empire Strikes Back'
                actual = @movie.to_s
                expect(expectation).to eq(actual)
            end
        end

    end

end

Setup Routes/Controllers

• bin/rails g controller movies index show edit new

• bin/rails g controller welcome index

• bin/rails d controller movies index show edit new

• bin/rails g controller movies index
• bin/rake routes

bin/rake routes
      Prefix Verb URI Pattern             Controller#Action
movies_index GET  /movies/index(.:format) movies#index
      movies GET  /movies(.:format)       movies#index
       movie GET  /movies/:id(.:format)   movies#show
        root GET  /                       welcome#index

• rails g model User username:string password_hash:string email:string img_url:string

g controller users new edit show bin/rake routes

 bin/rake routes
   Prefix Verb   URI Pattern               Controller#Action
    users GET    /users(.:format)          users#index {:expect=>[:index]}
          POST   /users(.:format)          users#create {:expect=>[:index]}
 new_user GET    /users/new(.:format)      users#new {:expect=>[:index]}
edit_user GET    /users/:id/edit(.:format) users#edit {:expect=>[:index]}
     user GET    /users/:id(.:format)      users#show {:expect=>[:index]}
          PATCH  /users/:id(.:format)      users#update {:expect=>[:index]}
          PUT    /users/:id(.:format)      users#update {:expect=>[:index]}
          DELETE /users/:id(.:format)      users#destroy {:expect=>[:index]}
   movies GET    /movies(.:format)         movies#index
    movie GET    /movies/:id(.:format)     movies#show
     root GET    /                         welcome#index