add top10 and bottom10 products in dashboard

app/controllers/home_controller.rb

@@ -68,6 +68,7 @@ class HomeController < ApplicationController
     @sales = Sale::where("payment_status='paid' and sale_status='completed' and DATE_FORMAT(receipt_date,'%Y-%m-%d') = '#{today}'").count()
 
     @top_products = Sale.top_products(today).sum('i.qty')
+    @bottom_products = Sale.bottom_products(today).sum('i.qty')
     @hourly_sales = Sale.hourly_sales(today).sum(:grand_total)
     # .group_by_hour(:created_at, :time_zone => 'Asia/Rangoon',format: '%I:%p')
     # .sum(:grand_total)

app/models/sale.rb

@@ -907,7 +907,17 @@ end
                 .where("(i.qty > 0 and i.price > 0) and DATE_FORMAT(receipt_date,'%Y-%m-%d') = '#{today}'"+
                       "and payment_status='paid' and sale_status= 'completed'")
                 .group('mi.name')
-                .order("SUM(i.qty) DESC").limit(5)
+                .order("SUM(i.qty) DESC").limit(10)
+  end
+
+  def self.bottom_products(today)
+    query = Sale.select("(SUM(i.qty) * i.price) as grand_total,SUM(i.qty) as total_item," +
+                        " i.price as unit_price,mi.name as product_name")
+                .joins("JOIN sale_items i ON i.sale_id = sales.sale_id JOIN menu_items mi ON i.product_code = mi.item_code")
+                .where("(i.qty > 0 and i.price > 0) and DATE_FORMAT(receipt_date,'%Y-%m-%d') = '#{today}'"+
+                      "and payment_status='paid' and sale_status= 'completed'")
+                .group('mi.name')
+                .order("SUM(i.qty) ASC").limit(10)
   end
 
   def self.hourly_sales(today)

app/views/home/dashboard.html.erb

@@ -58,7 +58,7 @@
   <div class="row">
     <div class="col-xs-9 col-sm-9 col-md-9 col-lg-9">
       <div class="row">
-        <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">
+        <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6">
           <div class="card">
             <div class="body">
               <h4><i class="material-icons md-24">dashboard</i><%= (t :top) + " " + (t :products) %></h4>
@@ -67,6 +67,15 @@
             </div>
           </div>
         </div>
+        <div class="col-xs-12 col-sm-12 col-md-6 col-lg-6">
+          <div class="card">
+            <div class="body">
+              <h4><i class="material-icons md-24">dashboard</i><%= (t :bottom) + " " + (t :products) %></h4>
+              <!-- <canvas id="top_products" class="col-md-12"></canvas> -->
+              <%= pie_chart @bottom_products %>
+            </div>
+          </div>
+        </div>
       </div>
           <!-- <div class="row">
           <div class="col-xs-12 col-sm-12 col-md-12 col-lg-12">

config/locales/en.yml

@@ -68,6 +68,7 @@ en:
   booking_details: "Booking Details"
   inventory_definitions: "Inventory Definitions"
   sale_audits: "Sale Audits"
+  bottom: "Bottom"
 
   views:
     btn: