implemented some expert's recommendation

Gemfile

@@ -17,6 +17,7 @@ gem 'simplecov', '~> 0.22.0'
 gem 'faker', '~> 3.1'
 gem "devise"
 gem 'turbolinks'
+gem 'simple_form'
 
 group :development, :test do
   gem 'rspec-rails', '~> 6.0', '>= 6.0.1'

Gemfile.lock

@@ -140,7 +140,10 @@ GEM
     nio4r (2.5.8)
     nokogiri (1.13.10-x64-mingw32)
       racc (~> 1.4)
+    nokogiri (1.13.10-x86_64-linux)
+      racc (~> 1.4)
     orm_adapter (0.5.0)
+    pg (1.4.5)
     pg (1.4.5-x64-mingw32)
     public_suffix (5.0.1)
     puma (5.6.5)
@@ -205,6 +208,9 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
+    simple_form (5.2.0)
+      actionpack (>= 5.2)
+      activemodel (>= 5.2)
     simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
@@ -222,6 +228,8 @@ GEM
       railties (>= 6.0.0)
     tailwindcss-rails (2.0.21-x64-mingw32)
       railties (>= 6.0.0)
+    tailwindcss-rails (2.0.21-x86_64-linux)
+      railties (>= 6.0.0)
     thor (1.2.1)
     timeout (0.3.1)
     turbo-rails (1.3.2)
@@ -256,6 +264,7 @@ GEM
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap
@@ -271,6 +280,7 @@ DEPENDENCIES
   rails (~> 7.0.4)
   rspec-rails (~> 6.0, >= 6.0.1)
   selenium-webdriver
+  simple_form
   simplecov (~> 0.22.0)
   sprockets-rails
   stimulus-rails
@@ -285,4 +295,4 @@ RUBY VERSION
    ruby 3.0.3p157
 
 BUNDLED WITH
-   2.3.26
+   2.4.6

Procfile.dev

@@ -1,2 +1,2 @@
-web: bin/rails server -p 3000
-css: bin/rails tailwindcss:watch
+web: rails server -p 3000
+css: rails tailwindcss:watch

app/assets/stylesheets/application.css

@@ -10,6 +10,5 @@
  * files in this directory. Styles in this file should be added after the last require_* statement.
  * It is generally better to create a new file per style scope.
  *
- *= require_tree .
  *= require_self
  */

app/assets/stylesheets/application.tailwind.css

@@ -1,13 +1,4 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
-
-/*
-
-@layer components {
-  .btn-primary {
-    @apply py-2 px-4 bg-blue-200;
-  }
-}
-
-*/
+@import "tailwindcss/base";
+@import "tailwindcss/components";
+@import "./components/buttons.css";
+@import "tailwindcss/utilities";

app/assets/stylesheets/components/buttons.css

@@ -0,0 +1,13 @@
+@layer components {
+  .btn-gradient {
+    @apply text-gray-900 bg-gradient-to-r from-teal-200 to-lime-200 hover:bg-gradient-to-l hover:from-teal-200 hover:to-lime-200 focus:ring-4 focus:outline-none focus:ring-lime-200 dark:focus:ring-teal-700 font-medium rounded-lg text-sm px-5 py-2.5 text-center mr-2 mb-2;
+  }
+
+  .btn-green {
+    @apply text-white bg-gradient-to-r from-green-400 via-green-500 to-green-600 hover:bg-gradient-to-br focus:ring-4 focus:outline-none focus:ring-green-300 dark:focus:ring-green-800 font-medium rounded-lg text-sm px-5 py-2.5 text-center mr-2 mb-2;
+  }
+
+  .btn-blue {
+    @apply bg-cyan-500 text-white active:bg-cyan-600 font-bold uppercase text-xs px-4 py-2 rounded shadow hover:shadow-md outline-none focus:outline-none mr-1 mb-1 ease-linear transition-all duration-150;
+  }
+}

app/controllers/application_controller.rb

@@ -1,14 +1,2 @@
 class ApplicationController < ActionController::Base
-    before_action :initialize_session
-    before_action :load_cart
-
-    private
-
-    def initialize_session
-      session[:cart] ||= [] 
-    end
-
-    def load_cart
-      @cart = Product.find(session[:cart])
-    end
 end

app/controllers/carts_controller.rb

@@ -1,6 +1,22 @@
 class CartsController < ApplicationController
-  before_action :authenticate_user! 
-
+  def show
+    @cart = resource
+  end
+
   def create
   end
+
+  def destroy
+  end
+
+
+  private
+
+  def resource
+    if user_signed_in?
+      Product.where(id: current_user.cart.cart_products.pluck(:product_id))
+    elsif session[:product_id]
+      Product.where(id: session[:product_id])
+    end
+  end
 end

app/controllers/categories_controller.rb

@@ -1,9 +1,19 @@
 class CategoriesController < ApplicationController
-    def index
-        @categories = Category.all
-    end
-
-    def show
-        @category = Category.find(params[:id])
-    end
+  def index
+    @categories = collection
+  end
+
+  def show
+    @category = resource
+  end
+
+  private
+
+  def collection
+    Category.ordered
+  end
+
+  def resource
+    collection.find(params[:id])
+  end
 end

app/controllers/home_controller.rb

@@ -1,5 +1,2 @@
 class HomeController < ApplicationController
-    def index
-        render
-    end
 end

app/controllers/orders_controller.rb

@@ -1,51 +1,56 @@
 class OrdersController < ApplicationController
-    before_action :set_quote, only: [:show, :edit, :update, :destroy]
-
-  def index
-    @orders = Order.all
-  end
-
   def show
     @order = Order.find(params[:id])
   end
 
   def new
-    @order = Order.new
+    @order = Order.create(user_id: current_user.id, status: "created", ordered_at: DateTime.current)
+    current_user.cart.products.each do |item|
+      @order.products << item
+      current_user.cart[:id] = nil
+    end
+    # address = Address.new(address_params)
+    # address.save
+    # @order_detail = OrderDetail.new(order_detail_params)
+    # @order_detail.save
+    @order.save
   end
 
   def create
     @order = Order.new(order_params)
-
-    if @order.save
-      redirect_to orders_path, notice: "Order was successfully created."
-    else
-      render :new
+
+    current_user.cart.cart_products.each do |item|
+      @order.cart_products << item
+      item.cart_id = nil
     end
-  end
-
-  def edit
+    @order.save
+    Cart.destroy(session[:cart_id])
+    session[:cart_id] = nil
+    redirect_to root_path
   end
 
   def update
-    if @order.update(order_params)
-      redirect_to orders_path, notice: "Order was successfully updated."
-    else
-      render :edit
+    respond_to do |format|
+      if @order.update(order_params)
+        format.html { redirect_to @order, notice: 'Website was successfully updated.' }
+        format.json { render :show, status: :ok, location: @order }
+      else
+        format.html { render :edit }
+        format.json { render json: @order.errors, status: :unprocessable_entity }
+      end
     end
   end
 
-  def destroy
-    @order.destroy
-    redirect_to orders_path, notice: "Order was successfully destroyed."
-  end
-
   private
+    def order_params
+      params.require(:order).permit()
+    end
 
-  def set_quote
-    @order = Order.find(params[:id])
-  end
+    # def order_detail_params
+    #   params.require(:order_detail).permit(:first_name, :last_name, :email, address_id: address.id, order_id: @order.id)
+    # end
 
-  def order_params
-    params.require(:order).permit(:status, :ordered_at)
-  end
+    # def address_params
+    #   params.require(:address).permit(:street, :city, :coutry, :comment, user_id: current_user.id)
+    # end
 end

app/controllers/products_controller.rb

@@ -1,62 +1,37 @@
 class ProductsController < ApplicationController
-    before_action :set_product, only: [:show, :edit, :update, :destroy]
-
   def index
-    @products = Product.all
-  end
-
-  def show
-  end
-
-  def new
-    @product = Product.new
-  end
-
-  def create
-    @product = Product.new(quote_params)
-
-    if @product.save
-      redirect_to products_path, notice: "Product was successfully created."
+    if params[:id]
+      @products = collection.where(category_id: params[:id])
     else
-      render :new
+      @products = collection
     end
   end
 
-  def edit
-  end
-
-  def update
-    if @product.update(product_params)
-      redirect_to products_path, notice: "Product was successfully updated."
-    else
-      render :edit
-    end
-  end
-
-  def destroy
-    @product.destroy
-    redirect_to products_path, notice: "Product was successfully destroyed."
+  def show
+    @product = resource
   end
 
   def add_to_cart
-    id = params[:id].to_i
-    session[:cart] << id unless session[:cart].include?(id)
+    if session[:product_ids].nil?
+      session[:product_ids] = [] 
+    end
+
+    session[:product_ids] << params[:id]
     redirect_to products_path
   end
 
   def remove_from_cart
-    id = params[:id].to_i
     session[:cart].delete(id)
     redirect_to products_path
   end
 
   private
 
-  def set_product
-    @product = Product.find(params[:id])
+  def collection
+    Product.ordered
   end
 
-  def product_params
-    params.require(:product).permit(:name, :price, :description, :position, :category_id)
+  def resource
+    collection.find(params[:id])
   end
 end

app/controllers/users/registrations_controller.rb

@@ -12,7 +12,15 @@ class Users::RegistrationsController < Devise::RegistrationsController
   # POST /resource
   def create
     super
-     Cart.create(user_id: current_user.id)
+    current_cart = Cart.create(user_id: current_user.id)
+      if !session[:product_ids].nil? && !session[:product_ids].empty?
+        session[:product_ids].each do |product_id|
+          current_cart_products = CartProduct.create(cart_id: current_cart.id, product_id: product_id)
+        end
+      end
+    # session[:product_id].each do |product_id|
+    #   CartProduct.create(cart_id: current_cart.id, product_id: product_id)
+    # end
   end
 
   # GET /resource/edit

app/controllers/users/sessions_controller.rb

@@ -9,13 +9,18 @@ class Users::SessionsController < Devise::SessionsController
   # end
 
   # POST /resource/sign_in
-  # def create
-  #   super
-  # end
+  def create
+    super
+    session[:product_ids].each do |product_id|
+      current_cart_products = CartProduct.create(cart_id: current_user.cart.id, product_id: product_id)
+    end
+  end
 
   # DELETE /resource/sign_out
   # def destroy
+  #   cart_products = Product.where(id: current_user.cart.cart_products.pluck(:product_id))
   #   super
+  #   session[:product_id] = cart_products
   # end
 
   # protected