diff options
| -rw-r--r-- | rest_framework/fields.py | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/rest_framework/fields.py b/rest_framework/fields.py index 205efd2f..21a1effd 100644 --- a/rest_framework/fields.py +++ b/rest_framework/fields.py @@ -382,13 +382,23 @@ class Field(object): """ Transform the *incoming* primitive data into a native value. """ - raise NotImplementedError('to_internal_value() must be implemented.') + raise NotImplementedError( + '{cls}.to_internal_value() must be implemented.'.format( + cls=self.__class__.__name__ + ) + ) def to_representation(self, value): """ Transform the *outgoing* native value into primitive data. """ - raise NotImplementedError('to_representation() must be implemented.') + raise NotImplementedError( + '{cls}.to_representation() must be implemented.\n' + 'If you are upgrading from REST framework version 2 ' + 'you might want `ReadOnlyField`.'.format( + cls=self.__class__.__name__ + ) + ) def fail(self, key, **kwargs): """ |