AASM and more models

Author: tommotorefi

Gemfile

@@ -5,6 +5,7 @@ gem 'bcrypt', '~> 3.1.7'
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 gem 'pg'
 gem 'bootsnap'
+gem 'aasm'
 
 group :development, :test do
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

Gemfile.lock

@@ -1,6 +1,8 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    aasm (4.12.2)
+      concurrent-ruby (~> 1.0)
     actioncable (5.1.3)
       actionpack (= 5.1.3)
       nio4r (~> 2.0)
@@ -136,6 +138,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  aasm
   bcrypt (~> 3.1.7)
   bootsnap
   byebug

app/models/book.rb

@@ -1,3 +1,5 @@
 class Book < ApplicationRecord
   has_and_belongs_to_many :authors
+  
+  has_many :reviews
 end

app/models/review.rb

@@ -0,0 +1,17 @@
+class Review < ApplicationRecord
+
+  belongs_to :book
+  belongs_to :reviewer
+  
+  include AASM
+  
+  aasm do
+    state :draft, initial: true
+    state :published
+    
+    event :publish do
+      transitions from: [:draft], to: :published
+    end
+  end
+  
+end

app/models/reviewer.rb

@@ -0,0 +1,5 @@
+class Reviewer < ApplicationRecord
+
+  has_many :reviews
+  
+end

db/migrate/20170822122707_create_everything.rb

@@ -22,7 +22,9 @@ def change
     end
 
     create_table :reviews do |t|
-      t.string :state
+      t.string :aasm_state, null: false
+      t.boolean :featured, null: false, default: false
+      t.text :content, null: false
       t.references :book, null: false, foreign_key: true
       t.references :reviewer, null: false, foreign_key: true
       t.timestamps

lib/tasks/populate.rake

@@ -1,13 +1,16 @@
 namespace :db do
   desc "Populate database"
   task populate: :environment do
-    Book.create!(title: "Brothers Karamazov")
-    Author.create!(name: "Fyodor Dostoevsky")
-    Book.last.authors << Author.last
+    reviewer_fred = Reviewer.create!(name: "Fred Fredson")
+    
+    brothers_k = Book.create!(title: "Brothers Karamazov")
+    fyodor_d = Author.create!(name: "Fyodor Dostoevsky")
+    brothers_k.authors << fyodor_d
+    Review.create!(book: brothers_k, reviewer: reviewer_fred, content: "a classic")
 
-    Book.create!(title: "The Fatal Eggs")
-    Author.create!(name: "Mikhail Bulgakov")
-    Book.last.authors << Author.last
+    fatal_e = Book.create!(title: "The Fatal Eggs")
+    mikhail_b = Author.create!(name: "Mikhail Bulgakov")
+    fatal_e.authors << mikhail_b
 
   end
 end