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fix: InvoiceQuerySet.annotate_total() (but for real this time)
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@ -158,10 +158,11 @@ def test_user_invoice_with_multiple_items():
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item_recipe = Recipe(InvoiceItem, invoice=foreign_key(Recipe(Invoice, user=user)))
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item_recipe = Recipe(InvoiceItem, invoice=foreign_key(Recipe(Invoice, user=user)))
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item_recipe.make(_quantity=3, quantity=1, product_unit_price=5)
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item_recipe.make(_quantity=3, quantity=1, product_unit_price=5)
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item_recipe.make(_quantity=1, quantity=1, product_unit_price=5)
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item_recipe.make(_quantity=1, quantity=1, product_unit_price=5)
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item_recipe.make(_quantity=2, quantity=1, product_unit_price=iter([5, 8]))
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res = list(
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res = list(
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Invoice.objects.filter(user=user)
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Invoice.objects.filter(user=user)
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.annotate_total()
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.annotate_total()
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.order_by("-total")
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.order_by("-total")
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.values_list("total", flat=True)
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.values_list("total", flat=True)
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)
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)
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assert res == [15, 5]
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assert res == [15, 13, 5]
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@ -173,9 +173,8 @@ class InvoiceQueryset(models.QuerySet):
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return self.annotate(
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return self.annotate(
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total=Subquery(
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total=Subquery(
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InvoiceItem.objects.filter(invoice_id=OuterRef("pk"))
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InvoiceItem.objects.filter(invoice_id=OuterRef("pk"))
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.annotate(item_amount=F("product_unit_price") * F("quantity"))
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.values("invoice_id")
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.values("item_amount")
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.annotate(total=Sum(F("product_unit_price") * F("quantity")))
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.annotate(total=Sum("item_amount"))
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.values("total")
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.values("total")
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)
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)
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)
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)
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