add first bill

app/models/sale_item.rb

@@ -30,11 +30,13 @@ class SaleItem < ApplicationRecord
     # end
   end
 
+  # Get Prices for each accounts (eg: food, beverage)
   def self.calculate_price_by_accounts(sale_items)
     price_accounts = []
     Account.all.each do |a|
       account_price = {:name => a.title, :price => 0}
 
+      # Check for actual sale items
       sale_items.each do |si|
         if si.account_id == a.id
           account_price[:price] = account_price[:price] + si.price          
@@ -46,6 +48,24 @@ class SaleItem < ApplicationRecord
     return price_accounts
   end
 
+  # Get discount Prices for each accounts (eg: food, beverage)
+  def self.get_discount_price_by_accounts(sale_items)
+    discount_accounts = []
+    Account.all.each do |a|
+      discount_account = {:name => a.title, :price => 0}
+
+      # Check for actual sale items
+      sale_items.where("is_taxable = 0 AND remark = 'Discount'").find_each do |si|
+        if si.account_id == a.id
+          discount_account[:price] = (discount_account[:price] + si.price) * -1          
+        end        
+      end
+      discount_accounts.push(discount_account)
+    end
+
+    return discount_accounts
+  end
+
   # Calculate rebate_by_account
   def self.calculate_rebate_by_account(sale_items)
     rebateacc =  Account.where("rebate=?",true)