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Fix for 'on_order' calculation

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- Handle null results
This commit is contained in:
Oliver Walters 2019-06-07 09:54:36 +10:00
parent 31ad31365a
commit 351c5fb7d0
1 changed files with 13 additions and 1 deletions
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14
InvenTree/company/models.py
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@ -237,6 +237,9 @@ class SupplierPart(models.Model):
@property @property
def manufacturer_string(self): def manufacturer_string(self):
""" Format a MPN string for this SupplierPart.
Concatenates manufacture name and part number
"""
items = [] items = []
@ -315,7 +318,16 @@ class SupplierPart(models.Model):
totals = self.open_orders().aggregate(Sum('quantity'), Sum('received')) totals = self.open_orders().aggregate(Sum('quantity'), Sum('received'))
return totals['quantity__sum'] - totals['received__sum'] # Quantity on order
q = totals.get('quantity__sum', 0)
# Quantity received
r = totals.get('received__sum', 0)
if q is None or r is None:
return 0
else:
return q - r
def purchase_orders(self): def purchase_orders(self):