Create products, categories table

app/assets/stylesheets/custom.scss

+// "bootstrap-sprockets" must be imported before "bootstrap" and "bootstrap/variables"
+@import "bootstrap-sprockets";
+@import "bootstrap";
\ No newline at end of file

db/migrate/20170606055907_create_categories.rb

+class CreateCategories < ActiveRecord::Migration[5.1]
+  def change
+    create_table :categories do |t|
+      t.string :title
+      t.text :description
+    end
+  end
+end

db/migrate/20170606060101_create_products.rb

+class CreateProducts < ActiveRecord::Migration[5.1]
+  def change
+    create_table :products do |t|
+      t.string :title
+      t.text :description
+      t.text :sku
+      t.decimal :price, precision: 8, scale: 2
+      t.references :category, foreign_key: true
+      t.timestamps
+    end
+  end
+end

db/migrate/20170606064132_add_image_columns_to_products.rb

+class AddImageColumnsToProducts < ActiveRecord::Migration[5.1]
+  def up
+    add_attachment :products, :image
+  end
+
+  def down
+    remove_attachment :products, :image
+  end
+end

db/schema.rb

+# 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: 20170606064132) do
+
+  create_table "categories", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
+    t.string "title"
+    t.text "description"
+  end
+
+  create_table "products", force: :cascade, options: "ENGINE=InnoDB DEFAULT CHARSET=utf8" do |t|
+    t.string "title"
+    t.text "description"
+    t.text "sku"
+    t.decimal "price", precision: 8, scale: 2
+    t.bigint "category_id"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.string "image_file_name"
+    t.string "image_content_type"
+    t.integer "image_file_size"
+    t.datetime "image_updated_at"
+    t.index ["category_id"], name: "index_products_on_category_id"
+  end
+
+  add_foreign_key "products", "categories"
+end