First commit

example/db/migrate/20190322181705_devise_create_users.rb

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+# frozen_string_literal: true
+
+class DeviseCreateUsers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :users do |t|
+      t.string :full_name, null: false
+      t.string :phone
+      t.string :avatar
+
+      ## Database authenticatable
+      t.string :email,              null: false, default: ""
+      t.string :encrypted_password, null: false, default: ""
+
+      ## Recoverable
+      t.string   :reset_password_token
+      t.datetime :reset_password_sent_at
+
+      ## Rememberable
+      t.datetime :remember_created_at
+
+      ## Trackable
+      # t.integer  :sign_in_count, default: 0, null: false
+      # t.datetime :current_sign_in_at
+      # t.datetime :last_sign_in_at
+      # t.inet     :current_sign_in_ip
+      # t.inet     :last_sign_in_ip
+
+      ## Confirmable
+      # t.string   :confirmation_token
+      # t.datetime :confirmed_at
+      # t.datetime :confirmation_sent_at
+      # t.string   :unconfirmed_email # Only if using reconfirmable
+
+      ## Lockable
+      # t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
+      # t.string   :unlock_token # Only if unlock strategy is :email or :both
+      # t.datetime :locked_at
+
+
+      t.timestamps null: false
+    end
+
+    add_index :users, :email,                unique: true
+    add_index :users, :reset_password_token, unique: true
+    # add_index :users, :confirmation_token,   unique: true
+    # add_index :users, :unlock_token,         unique: true
+  end
+end

example/db/migrate/20190322181706_devise_create_customers.rb

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+# frozen_string_literal: true
+
+class DeviseCreateCustomers < ActiveRecord::Migration[5.2]
+  def change
+    create_table :customers do |t|
+      t.string :full_name, null: false
+      t.string :phone
+
+      ## Database authenticatable
+      t.string :email,              null: false, default: ""
+      t.string :encrypted_password, null: false, default: ""
+
+      ## Recoverable
+      t.string   :reset_password_token
+      t.datetime :reset_password_sent_at
+
+      ## Rememberable
+      t.datetime :remember_created_at
+
+      ## Trackable
+      # t.integer  :sign_in_count, default: 0, null: false
+      # t.datetime :current_sign_in_at
+      # t.datetime :last_sign_in_at
+      # t.inet     :current_sign_in_ip
+      # t.inet     :last_sign_in_ip
+
+      ## Confirmable
+      # t.string   :confirmation_token
+      # t.datetime :confirmed_at
+      # t.datetime :confirmation_sent_at
+      # t.string   :unconfirmed_email # Only if using reconfirmable
+
+      ## Lockable
+      # t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
+      # t.string   :unlock_token # Only if unlock strategy is :email or :both
+      # t.datetime :locked_at
+
+
+      t.timestamps null: false
+    end
+
+    add_index :customers, :email,                unique: true
+    add_index :customers, :reset_password_token, unique: true
+    # add_index :customers, :confirmation_token,   unique: true
+    # add_index :customers, :unlock_token,         unique: true
+  end
+end

example/db/migrate/20190322181710_create_products.rb

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+class CreateProducts < ActiveRecord::Migration[5.2]
+  def change
+    create_table :products do |t|
+      t.string :name
+      t.text :description
+      t.decimal :price, precision: 7, scale: 2
+      t.belongs_to :user, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end

example/db/migrate/20190322200743_purchases.rb

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+class Purchases < ActiveRecord::Migration[5.2]
+  def change
+    create_table :purchases do |t|
+      t.references :customer, foreign_key: true
+      t.references :product, foreign_key: true
+      t.string :sale_type
+      t.integer :quantity
+      t.datetime :due_date
+      t.datetime :returned
+    end
+  end
+end

example/db/schema.rb

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+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 2019_03_22_200743) do
+
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "plpgsql"
+
+  create_table "customers", force: :cascade do |t|
+    t.string "full_name", null: false
+    t.string "phone"
+    t.string "email", default: "", null: false
+    t.string "encrypted_password", default: "", null: false
+    t.string "reset_password_token"
+    t.datetime "reset_password_sent_at"
+    t.datetime "remember_created_at"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["email"], name: "index_customers_on_email", unique: true
+    t.index ["reset_password_token"], name: "index_customers_on_reset_password_token", unique: true
+  end
+
+  create_table "products", force: :cascade do |t|
+    t.string "name"
+    t.text "description"
+    t.decimal "price", precision: 7, scale: 2
+    t.bigint "user_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["user_id"], name: "index_products_on_user_id"
+  end
+
+  create_table "purchases", force: :cascade do |t|
+    t.bigint "customer_id"
+    t.bigint "product_id"
+    t.string "sale_type"
+    t.integer "quantity"
+    t.datetime "due_date"
+    t.datetime "returned"
+    t.index ["customer_id"], name: "index_purchases_on_customer_id"
+    t.index ["product_id"], name: "index_purchases_on_product_id"
+  end
+
+  create_table "users", force: :cascade do |t|
+    t.string "full_name", null: false
+    t.string "phone"
+    t.string "avatar"
+    t.string "email", default: "", null: false
+    t.string "encrypted_password", default: "", null: false
+    t.string "reset_password_token"
+    t.datetime "reset_password_sent_at"
+    t.datetime "remember_created_at"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["email"], name: "index_users_on_email", unique: true
+    t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
+  end
+
+  add_foreign_key "products", "users"
+  add_foreign_key "purchases", "customers"
+  add_foreign_key "purchases", "products"
+end

example/db/seeds.rb

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+# This file should contain all the record creation needed to seed the database with its default values.
+# The data can then be loaded with the rails db:seed command (or created alongside the database with db:setup).
+#
+# Examples:
+#
+#   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
+#   Character.create(name: 'Luke', movie: movies.first)
+
+pwd = "123456"
+
+user_count = 10
+customer_count = 100
+product_count = 50
+purchase_count = 100
+
+user_count.times do |i|
+  user = User.create(
+    full_name: Faker::Name.name,
+    avatar: Faker::Avatar.image,
+    phone: Faker::PhoneNumber.cell_phone,
+    email: Faker::Internet.email,
+    password: pwd,
+    password_confirmation: pwd
+  )
+  user.save!
+  puts user.inspect
+end
+
+customer_count.times do |i|
+  customer = Customer.create(
+    full_name: Faker::Name.name,
+    phone: Faker::PhoneNumber.cell_phone,
+    email: Faker::Internet.email,
+    password: pwd,
+    password_confirmation: pwd
+  )
+  customer.save!
+  puts customer.inspect
+end
+
+product_count.times do |i|
+  desc = [
+    Faker::Beer.brand,
+    Faker::Beer.style, 
+    Faker::Beer.hop,
+    Faker::Beer.yeast,
+    Faker::Beer.ibu,
+    Faker::Beer.alcohol,
+    Faker::Beer.blg,
+  ].join(", ")
+
+  product = Product.create(
+    name: Faker::Beer.name,
+    description: desc,
+    price: rand(5.5..19.0),
+    user_id: rand(1..user_count)
+  )
+  product.save!
+  puts product.inspect
+end
+
+purchase_count.times do |i|
+  sale_type = ["rented", "bought"].sample
+
+  if sale_type == "rented"
+    due_date = Faker::Date.forward(30)
+    if [0, 3].sample == 1
+      returned = Faker::Date.forward(60)
+    end
+  end
+
+  purchase = Purchase.create(
+    customer_id: rand(1..customer_count),
+    product_id: rand(1..product_count),
+    sale_type: sale_type,
+    quantity: rand(1..10),
+    due_date: due_date,
+    returned: returned
+  )
+  purchase.save!
+  puts purchase.inspect
+end