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Better messaging for 'Field.to_representation'. Closes #2271.

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This commit is contained in:
Tom Christie 2014-12-15 09:29:54 +00:00
parent a72f812d80
commit 488b13e7b8
1 changed files with 12 additions and 2 deletions
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14
rest_framework/fields.py
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@ -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):
"""