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Fixed #30628 -- Adjusted expression identity to differentiate bound fields.

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Expressions referring to different bound fields should not be
considered equal.

Thanks Julien Enselme for the detailed report.

Regression in bc7e288ca9.
This commit is contained in:
Simon Charette 2019-07-09 17:26:37 -04:00 • committed by Mariusz Felisiak
parent 1bbf77bea5
commit ee6e93ec87
6 changed files with 37 additions and 5 deletions
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5
django/db/models/expressions.py
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@ -376,7 +376,10 @@ class BaseExpression:
identity = [self.__class__]
for arg, value in arguments:
if isinstance(value, fields.Field):
value = type(value)
if value.name and value.model:
value = (value.model._meta.label, value.name)
else:
value = type(value)
else:
value = make_hashable(value)
identity.append((arg, value))