Product model/controller

app/controllers/api/products_controller.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+# API Controller for resources of type Product
+# Products are used in store
+class API::ProductsController < API::ApiController
+  before_action :authenticate_user!, except: %i[index show]
+  before_action :set_product, only: %i[update destroy]
+
+  def index
+    @products = ProductService.list
+  end
+
+  def show; end
+
+  def create
+    authorize Product
+    @product = Product.new(product_params)
+    if @product.save
+      render status: :created
+    else
+      render json: @product.errors.full_messages, status: :unprocessable_entity
+    end
+  end
+
+  def update
+    authorize @product
+
+    if @product.update(product_params)
+      render status: :ok
+    else
+      render json: @product.errors.full_messages, status: :unprocessable_entity
+    end
+  end
+
+  def destroy
+    authorize @product
+    @product.destroy
+    head :no_content
+  end
+
+  private
+
+  def set_product
+    @product = Product.find(params[:id])
+  end
+
+  def product_params
+    params.require(:product).permit(:name, :slug, :sku, :description, :is_active,
+                                    :product_category_id, :amount, :quantity_min,
+                                    :low_stock_alert, :low_stock_threshold)
+  end
+end

app/models/product.rb

@@ -0,0 +1,3 @@
+class Product < ApplicationRecord
+  belongs_to :product_category
+end

app/policies/product_policy.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+# Check the access policies for API::ProductsController
+class ProductPolicy < ApplicationPolicy
+  def create?
+    user.privileged?
+  end
+
+  def update?
+    user.privileged?
+  end
+
+  def destroy?
+    user.privileged?
+  end
+end

app/services/product_service.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+# Provides methods for Product
+class ProductService
+  def self.list
+    Product.all
+  end
+end

app/views/api/products/_product.json.jbuilder

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+json.extract! product, :id, :name, :slug, :sku, :description, :is_active, :product_category_id, :amount, :quantity_min, :stock, :low_stock_alert, :low_stock_threshold

app/views/api/products/create.json.jbuilder

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+json.partial! 'api/products/product', product: @product

app/views/api/products/index.json.jbuilder

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+json.array! @products do |product|
+  json.partial! 'api/products/product', product: product
+end

app/views/api/products/show.json.jbuilder

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+json.partial! 'api/products/product', product: @product

app/views/api/products/update.json.jbuilder

@@ -0,0 +1,3 @@
+# frozen_string_literal: true
+
+json.partial! 'api/products/product', product: @product

config/routes.rb

@@ -154,6 +154,8 @@ Rails.application.routes.draw do
       patch 'position', on: :member
     end
 
+    resources :products
+
     # for admin
     resources :trainings do
       get :availabilities, on: :member

db/migrate/20220712153708_create_products.rb

@@ -0,0 +1,19 @@
+class CreateProducts < ActiveRecord::Migration[5.2]
+  def change
+    create_table :products do |t|
+      t.string :name
+      t.string :slug
+      t.string :sku
+      t.text :description
+      t.boolean :is_active, default: false
+      t.belongs_to :product_category, foreign_key: true
+      t.integer :amount
+      t.integer :quantity_min
+      t.jsonb :stock, default: { internal: 0, external: 0 }
+      t.boolean :low_stock_alert, default: false
+      t.integer :low_stock_threshold
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20220712160137_create_join_table_product_machine.rb

@@ -0,0 +1,8 @@
+class CreateJoinTableProductMachine < ActiveRecord::Migration[5.2]
+  def change
+    create_join_table :products, :machines do |t|
+      # t.index [:product_id, :machine_id]
+      # t.index [:machine_id, :product_id]
+    end
+  end
+end

db/schema.rb

@@ -367,6 +367,11 @@ ActiveRecord::Schema.define(version: 2022_07_20_135828) do
     t.index ["machine_id"], name: "index_machines_availabilities_on_machine_id"
   end
 
+  create_table "machines_products", id: false, force: :cascade do |t|
+    t.bigint "product_id", null: false
+    t.bigint "machine_id", null: false
+  end
+
   create_table "notifications", id: :serial, force: :cascade do |t|
     t.integer "receiver_id"
     t.string "attached_object_type"
@@ -591,6 +596,23 @@ ActiveRecord::Schema.define(version: 2022_07_20_135828) do
     t.index ["parent_id"], name: "index_product_categories_on_parent_id"
   end
 
+  create_table "products", force: :cascade do |t|
+    t.string "name"
+    t.string "slug"
+    t.string "sku"
+    t.text "description"
+    t.boolean "is_active", default: false
+    t.bigint "product_category_id"
+    t.integer "amount"
+    t.integer "quantity_min"
+    t.jsonb "stock", default: {"external"=>0, "internal"=>0}
+    t.boolean "low_stock_alert", default: false
+    t.integer "low_stock_threshold"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["product_category_id"], name: "index_products_on_product_category_id"
+  end
+
   create_table "profile_custom_fields", force: :cascade do |t|
     t.string "label"
     t.boolean "required", default: false
@@ -1112,6 +1134,7 @@ ActiveRecord::Schema.define(version: 2022_07_20_135828) do
   add_foreign_key "prepaid_packs", "groups"
   add_foreign_key "prices", "groups"
   add_foreign_key "prices", "plans"
+  add_foreign_key "products", "product_categories"
   add_foreign_key "project_steps", "projects"
   add_foreign_key "project_users", "projects"
   add_foreign_key "project_users", "users"