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Condense into single "available_stock" field

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This commit is contained in:
Oliver Walters 2022-04-04 23:07:44 +10:00
parent f6664b2477
commit c6ba104ae8
1 changed files with 17 additions and 13 deletions
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30
InvenTree/part/serializers.py
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@ -578,9 +578,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
purchase_price_range = serializers.SerializerMethodField()
# Annotated fields
total_stock = serializers.FloatField(read_only=True)
allocated_to_sales_orders = serializers.FloatField(read_only=True)
allocated_to_build_orders = serializers.FloatField(read_only=True)
available_stock = serializers.FloatField(read_only=True)
def __init__(self, *args, **kwargs):
# part_detail and sub_part_detail serializers are only included if requested.
@ -614,7 +612,11 @@ class BomItemSerializer(InvenTreeModelSerializer):
queryset = queryset.prefetch_related('sub_part')
queryset = queryset.prefetch_related('sub_part__category')
queryset = queryset.prefetch_related('sub_part__stock_items')
queryset = queryset.prefetch_related(
'sub_part__stock_items',
'sub_part__stock_items__allocations',
'sub_part__stock_items__sales_order_allocations',
)
queryset = queryset.prefetch_related('sub_part__supplier_parts__pricebreaks')
return queryset
@ -635,7 +637,7 @@ class BomItemSerializer(InvenTreeModelSerializer):
# Calculate "total stock" for the referenced sub_part
# Calculate the "build_order_allocations" for the sub_part
queryset = queryset.annotate(
queryset = queryset.alias(
total_stock=Coalesce(
SubquerySum('sub_part__stock_items__quantity', filter=StockItem.IN_STOCK_FILTER),
Decimal(0),
@ -661,13 +663,16 @@ class BomItemSerializer(InvenTreeModelSerializer):
),
Decimal(0),
output_field=models.DecimalField(),
)
# build_order_allocations=Coalesce(
# SubquerySum('sub_part__stock_items__allocations__quantity'),
# )
),
)
# queryset = querty
# Calculate 'available_stock' based on previously annotated fields
queryset = queryset.annotate(
available_stock=ExpressionWrapper(
F('total_stock') - F('allocated_to_sales_orders') - F('allocated_to_build_orders'),
output_field=models.DecimalField(),
)
)
return queryset
@ -741,9 +746,8 @@ class BomItemSerializer(InvenTreeModelSerializer):
'price_range',
'validated',
'total_stock',
'allocated_to_sales_orders',
'allocated_to_build_orders',
# Annotated fields describing available quantity
'available_stock',
]