Fix: On update issue, it will update price / discount / tax from the batch (if changed)

brewman/views/services/voucher/issue.py

@@ -2,13 +2,14 @@ import datetime
 from decimal import Decimal
 import uuid
 from brewman.models import DBSession
-from brewman.models.master import Product, CostCenter, LedgerBase
+from brewman.models.master import CostCenter, LedgerBase
 from brewman.models.operations import journals_valid, inventory_valid
 from brewman.models.validation_exception import ValidationError
 from brewman.models.voucher import Voucher, VoucherType, Batch, Inventory, Journal
 
 __author__ = 'tanshu'
 
+
 def issue_create_voucher(json, user):
     dt = datetime.datetime.strptime(json['Date'], '%d-%b-%Y')
     voucher = Voucher(date=dt, narration=json['Narration'], user_id=user.id, type=VoucherType.by_name('Issue'))
@@ -51,7 +52,7 @@ def issue_create_inventory(voucher, item, batch_consumed):
         batch.quantity_remaining += quantity
 
     item = Inventory(id=inventory_id, product_id=batch.product.id, quantity=quantity, rate=batch.rate, tax=batch.tax,
-        discount=batch.discount, batch=batch)
+                     discount=batch.discount, batch=batch)
     voucher.inventories.append(item)
     DBSession.add(item)
 
@@ -61,9 +62,9 @@ def issue_create_journals(inventories, source, destination):
     for item in inventories:
         amount += item.amount
     return [Journal(debit=-1, ledger_id=LedgerBase.all_purchases(), amount=round(amount, 2),
-        cost_center_id=source),
+                    cost_center_id=source),
             Journal(debit=1, ledger_id=LedgerBase.all_purchases(), amount=round(amount, 2),
-                cost_center_id=destination)]
+                    cost_center_id=destination)]
 
 
 def issue_update_voucher(voucher, json, user):
@@ -105,18 +106,18 @@ def issue_update_inventory(voucher, newInventories, batch_consumed):
         for j in range(len(newInventories), 0, -1):
             i = newInventories[j - 1]
             if 'InventoryID' in i and item.id == uuid.UUID(i['InventoryID']):
-                product = Product.by_id(uuid.UUID(i['Product']['ProductID']))
+                batch = Batch.by_id(uuid.UUID(i['Batch']['BatchID']))
                 found = True
-                if item.product_id != product.id:
+                if item.batch_id != batch.id:
-                    raise ValidationError('Product cannot be changed')
+                    raise ValidationError('Product / Batch cannot be changed')
                 new_quantity = round(Decimal(i['Quantity']), 2)
                 old_quantity = round(Decimal(item.quantity), 2)
                 quantity_remaining = round(Decimal(item.batch.quantity_remaining), 2)
                 if new_quantity <= 0:
                     raise ValidationError("Quantity of {0} cannot be zero".format(item.product.name))
-                if batch_consumed == True and new_quantity - old_quantity > quantity_remaining:
+                if batch_consumed is True and new_quantity - old_quantity > quantity_remaining:
                     raise ValidationError("Maximum quantity available for {0} is {1}".format(item.product.full_name,
-                        old_quantity + quantity_remaining))
+                                                                                             old_quantity + quantity_remaining))
                 if item.batch.name > voucher.date:
                     raise ValidationError("Batch of {0} was purchased after the issue date".format(item.product.name))
 
@@ -128,6 +129,10 @@ def issue_update_inventory(voucher, newInventories, batch_consumed):
                     item.batch.quantity_remaining += (new_quantity - old_quantity)
 
                 item.quantity = new_quantity
+                item.rate = batch.rate
+                item.tax = batch.tax
+                item.discount = batch.discount
+
                 newInventories.remove(i)
                 break
         if not found:
@@ -139,7 +144,7 @@ def issue_update_inventory(voucher, newInventories, batch_consumed):
                 if item.batch.quantity_remaining < item.quantity:
                     raise ValidationError(
                         "Product {0} cannot be removed, minimum quantity is {1}".format(item.product.name,
-                            item.batch.quantity_remaining))
+                                                                                        item.batch.quantity_remaining))
                 item.batch.quantity_remaining -= item.quantity
             DBSession.delete(item)
             voucher.inventories.remove(item)