move card update function to new action

venshop_app/app/controllers/cards_controller.rb

@@ -8,35 +8,6 @@ class CardsController < ApplicationController
     end
     unless params[:product_id].blank?
       if Product.where(id: params[:product_id]).exists?
-
-        if !params[:card_action].blank? && params[:card_action] == 'remove'
-
-        elsif !params[:card_action].blank? && params[:card_action] == 'update'
-           # Nothing to update
-          if @card_infos.empty?
-            flash[:error] = "Invalid request"
-            redirect_to cards_path and return
-          else
-            quantity = params[:quantity]
-            # Invalid request
-            if quantity.blank? || quantity.to_i <= 0
-              flash[:error] = "Invalid quantity"
-              redirect_to cards_path and return
-            else
-              card_items = @card_infos[:card_items]
-              card_items.each_with_index do |card_item, key|
-                # if a product exist in card
-                if card_item[:product_id] == params[:product_id]
-                  card_item[:quantity] = quantity.to_i
-                  card_items[key] = card_item
-                  @card_infos = { card_items: card_items, customer_info: @card_infos[:customer_info] }
-                  session[:SHOPPING_CARD_SESSION_NAME] = @card_infos
-                end
-              end
-              redirect_to cards_path and return
-            end
-          end
-        else
         # if add a product to card
         # first time add to card
         if @card_infos.empty?
@@ -66,7 +37,6 @@ class CardsController < ApplicationController
           end
           redirect_to cards_path and return
         end
-        end
       else
         flash[:error] = "Invalid product"
         redirect_to products_path and return
@@ -74,7 +44,7 @@ class CardsController < ApplicationController
     end
   end
 
-  # if remove a product from card
+  # remove a product from card
   def remove
     @card_infos = {}
     unless session[:SHOPPING_CARD_SESSION_NAME].blank?
@@ -102,6 +72,42 @@ class CardsController < ApplicationController
     end
     redirect_to cards_path and return
   end
+
+  # update quantity
+  def update
+    @card_infos = {}
+    unless session[:SHOPPING_CARD_SESSION_NAME].blank?
+      @card_infos = session[:SHOPPING_CARD_SESSION_NAME]
+    end
+    unless params[:product_id].blank?
+      # Nothing to update
+      if @card_infos.empty?
+        flash[:error] = "Invalid request"
+        redirect_to cards_path and return
+      else
+        quantity = params[:quantity]
+        # Invalid request
+        if quantity.blank? || quantity.to_i <= 0
+          flash[:error] = "Invalid quantity"
+          redirect_to cards_path and return
+        else
+          card_items = @card_infos[:card_items]
+          card_items.each_with_index do |card_item, key|
+            # if a product exist in card
+            if card_item[:product_id] == params[:product_id]
+              card_item[:quantity] = quantity.to_i
+              card_items[key] = card_item
+              @card_infos = { card_items: card_items, customer_info: @card_infos[:customer_info] }
+              session[:SHOPPING_CARD_SESSION_NAME] = @card_infos
+            end
+          end
+          redirect_to cards_path and return
+        end
+      end
+    end
+    redirect_to cards_path and return
+  end
+
   def checkout
     add_breadcrumb "Checkout", url_for(action: 'checkout')
     @card_infos = {}

venshop_app/app/views/cards/_item_list.html.erb

@@ -38,7 +38,7 @@
             <% if can_edit %>
             <td>
               <div class="text-center">
-                <%= link_to(cards_path(product_id: card_item[:product_id], card_action: 'update'), class: 'btn btn-info btn-update-card-quantity') do %>
+                <%= link_to(url_for(controller: 'cards', action: 'update', product_id: card_item[:product_id]), class: 'btn btn-info btn-update-card-quantity') do %>
                   <span class="glyphicon glyphicon-plus"></span> Update quantity
                 <% end %>
                 <%= link_to(url_for(controller: 'cards', action: 'remove', product_id: card_item[:product_id]), class: 'btn btn-danger', dada: '{:confirm=>"Do you want to remove this product?"}') do %>

venshop_app/config/routes.rb

@@ -11,6 +11,7 @@ VenshopApp::Application.routes.draw do
   post "cards/confirm_checkout"
   get "cards/thankyou"
   get "cards/remove"
+  get "cards/update"
   resources :users
   resources :sessions, only: [:new, :create, :destroy]
   resources :products