fix bugs and improvement

app/models/employee.rb

@@ -36,7 +36,6 @@ class Employee < ApplicationRecord
       end
     end
     return nil
-
   end
 
   def self.authenticate_by_token(session_token)
@@ -44,7 +43,7 @@ class Employee < ApplicationRecord
       user = Employee.find_by_token_session(session_token)
       expiry_time = login_expiry_time
 
-      if user && user.session_expiry.utc > DateTime.now.utc
+      if user && user.session_expiry && user.session_expiry.utc > DateTime.now.utc
         #Extend the login time each time authenticatation take place
         user.session_expiry = user.session_expiry.utc + expiry_time.minutes
         user.save

app/models/sale_payment.rb

@@ -684,8 +684,11 @@ class SalePayment < ApplicationRecord
       end
     end
     sale.save!
-    table_update_status(sale)
-    update_shift
+    
+    if sale.sale_status == 'completed'
+      table_update_status(sale)
+      update_shift
+    end
   end
 
   # update for cashier shift

app/models/shift_sale.rb

@@ -28,7 +28,7 @@ class ShiftSale < ApplicationRecord
       #find open shift where is open today and is not closed and login by current cashier
       #DATE(shift_started_at)=? and
       today_date = DateTime.now.strftime("%Y-%m-%d")
-      shift = ShiftSale.where("shift_started_at is not null and shift_closed_at is null and employee_id = #{current_user}").take
+      shift = ShiftSale.where("shift_started_at is not null and shift_closed_at is null and employee_id = ?", current_user).take
       return shift
     #end
   end
@@ -132,7 +132,7 @@ class ShiftSale < ApplicationRecord
       self.commercial_taxes = self.commercial_taxes.to_f - tax.to_f
       self.total_rounding = self.total_rounding - saleobj.rounding_adjustment
       self.total_void = self.total_void + saleobj.grand_total
-      
+
       if saleobj.customer.customer_type == "Dinein"
         self.dining_count = self.dining_count - 1
       else