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Fixed #24752 -- query crash when reusing Case expressions

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Case expressions weren't copied deep enough (self.cases list was
reused resulting in an error).
This commit is contained in:
Anssi Kääriäinen 2015-05-05 14:11:58 +03:00 • committed by Tim Graham
parent 9096e2b5f7
commit 7b05d2fdae
3 changed files with 20 additions and 0 deletions
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5
django/db/models/expressions.py
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@ -780,6 +780,11 @@ class Case(Expression):
c.default = c.default.resolve_expression(query, allow_joins, reuse, summarize, for_save)
return c
def copy(self):
c = super(Case, self).copy()
c.cases = c.cases[:]
return c
def as_sql(self, compiler, connection, template=None, extra=None):
connection.ops.check_expression_support(self)
if not self.cases: