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Simplify Serializer.fields with @cached_property (#6662)

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Ran Benita 2019-05-20 16:49:47 +03:00 committed by Tom Christie
parent 43a9cc1b7a
commit 7232586c7c
1 changed files with 5 additions and 6 deletions
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9
rest_framework/serializers.py
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@ -348,7 +348,7 @@ class Serializer(BaseSerializer, metaclass=SerializerMetaclass):
'invalid': _('Invalid data. Expected a dictionary, but got {datatype}.') 'invalid': _('Invalid data. Expected a dictionary, but got {datatype}.')
} }
@property @cached_property
def fields(self): def fields(self):
""" """
A dictionary of {field_name: field_instance}. A dictionary of {field_name: field_instance}.
@ -356,11 +356,10 @@ class Serializer(BaseSerializer, metaclass=SerializerMetaclass):
# `fields` is evaluated lazily. We do this to ensure that we don't # `fields` is evaluated lazily. We do this to ensure that we don't
# have issues importing modules that use ModelSerializers as fields, # have issues importing modules that use ModelSerializers as fields,
# even if Django's app-loading stage has not yet run. # even if Django's app-loading stage has not yet run.
if not hasattr(self, '_fields'): fields = BindingDict(self)
self._fields = BindingDict(self)
for key, value in self.get_fields().items(): for key, value in self.get_fields().items():
self._fields[key] = value fields[key] = value
return self._fields return fields
@cached_property @cached_property
def _writable_fields(self): def _writable_fields(self):