Fixed reduce quantity bug

Author: goxr3plus

app/controllers/line_items_controller.rb

@@ -2,8 +2,8 @@ class LineItemsController < ApplicationController
   before_action :logged_in_user, only: %i[create destroy add_quantity reduce_quantity]
 
   def create
-   # if(@order.nil?)
-   #   @order = Order.new(order_params)
+    # if(@order.nil?)
+    #   @order = Order.new(order_params)
 
     # Find associated product and current cart
     chosen_product = Product.find(params[:product_id])
@@ -45,9 +45,13 @@ def add_quantity
 
   def reduce_quantity
     @line_item = LineItem.find(params[:id])
-    @line_item.quantity -= 1 if @line_item.quantity > 1
-    @line_item.save
-    redirect_to cart_path(@current_cart)
+    if @line_item.quantity > 1
+      @line_item.quantity -= 1
+      @line_item.save
+      redirect_to cart_path(@current_cart)
+    elsif @line_item.quantity == 1
+      destroy
+    end
   end
 
   private

app/models/line_item.rb

@@ -1,6 +1,6 @@
 class LineItem < ApplicationRecord
   belongs_to :product
-  belongs_to :cart , dependent: :destroy
+  belongs_to :cart
   # belongs_to :order
 
   # LOGIC

config/routes.rb

@@ -20,9 +20,7 @@
   resources :microposts, only: %i[create destroy]
 
   # About Shopping cart
-  # get 'carts/:id' => 'carts#show', as: 'cart'
   get 'carts/:id' => 'carts#show', as: 'cart'
-  # get 'carts' => 'carts#show', as: 'cart'
   delete 'carts/:id' => 'carts#destroy'
 
   post 'line_items/:id/add' => 'line_items#add_quantity', as: 'line_item_add'