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Fixed #21275 -- Fixed a serializer error when generating migrations for contrib.auth.

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The migration serializer now looks for a deconstruct method on any object.
This commit is contained in:
Loic Bistuer
2013-10-22 00:33:57 +07:00
committed by Tim Graham
parent 28b70425af
commit e565e1332d
5 changed files with 62 additions and 3 deletions
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5
django/db/migrations/writer.py
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@@ -146,6 +146,9 @@ class MigrationWriter(object):
elif isinstance(value, models.Field):
attr_name, path, args, kwargs = value.deconstruct()
return cls.serialize_deconstructed(path, args, kwargs)
# Anything that knows how to deconstruct itself.
elif hasattr(value, 'deconstruct'):
return cls.serialize_deconstructed(*value.deconstruct())
# Functions
elif isinstance(value, (types.FunctionType, types.BuiltinFunctionType)):
# @classmethod?
@@ -153,8 +156,6 @@ class MigrationWriter(object):
klass = value.__self__
module = klass.__module__
return "%s.%s.%s" % (module, klass.__name__, value.__name__), set(["import %s" % module])
elif hasattr(value, 'deconstruct'):
return cls.serialize_deconstructed(*value.deconstruct())
elif value.__name__ == '<lambda>':
raise ValueError("Cannot serialize function: lambda")
elif value.__module__ is None: