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feat: Add some changes to ValidationError to support django style vadation errors (#8863)
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@ -144,17 +144,30 @@ class ValidationError(APIException):
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status_code = status.HTTP_400_BAD_REQUEST
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default_detail = _('Invalid input.')
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default_code = 'invalid'
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default_params = {}
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def __init__(self, detail=None, code=None):
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def __init__(self, detail=None, code=None, params=None):
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if detail is None:
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detail = self.default_detail
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if code is None:
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code = self.default_code
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if params is None:
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params = self.default_params
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# For validation failures, we may collect many errors together,
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# so the details should always be coerced to a list if not already.
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if isinstance(detail, tuple):
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detail = list(detail)
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if isinstance(detail, str):
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detail = [detail % params]
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elif isinstance(detail, ValidationError):
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detail = detail.detail
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elif isinstance(detail, (list, tuple)):
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final_detail = []
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for detail_item in detail:
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if isinstance(detail_item, ValidationError):
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final_detail += detail_item.detail
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else:
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final_detail += [detail_item % params if isinstance(detail_item, str) else detail_item]
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detail = final_detail
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elif not isinstance(detail, dict) and not isinstance(detail, list):
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detail = [detail]
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@ -109,3 +109,89 @@ class TestValidationErrorConvertsTuplesToLists(TestCase):
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assert len(error.detail) == 2
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assert str(error.detail[0]) == 'message1'
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assert str(error.detail[1]) == 'message2'
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class TestValidationErrorWithDjangoStyle(TestCase):
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def test_validation_error_details(self):
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error = ValidationError('Invalid value: %(value)s', params={'value': '42'})
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assert str(error.detail[0]) == 'Invalid value: 42'
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def test_validation_error_details_tuple(self):
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error = ValidationError(
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detail=('Invalid value: %(value1)s', 'Invalid value: %(value2)s'),
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params={'value1': '42', 'value2': '43'},
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)
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assert isinstance(error.detail, list)
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assert len(error.detail) == 2
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assert str(error.detail[0]) == 'Invalid value: 42'
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assert str(error.detail[1]) == 'Invalid value: 43'
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def test_validation_error_details_list(self):
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error = ValidationError(
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detail=['Invalid value: %(value1)s', 'Invalid value: %(value2)s', ],
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params={'value1': '42', 'value2': '43'}
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)
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assert isinstance(error.detail, list)
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assert len(error.detail) == 2
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assert str(error.detail[0]) == 'Invalid value: 42'
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assert str(error.detail[1]) == 'Invalid value: 43'
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def test_validation_error_details_validation_errors(self):
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error = ValidationError(
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detail=ValidationError(
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detail='Invalid value: %(value1)s',
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params={'value1': '42'},
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),
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)
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assert isinstance(error.detail, list)
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assert len(error.detail) == 1
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assert str(error.detail[0]) == 'Invalid value: 42'
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def test_validation_error_details_validation_errors_list(self):
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error = ValidationError(
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detail=[
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ValidationError(
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detail='Invalid value: %(value1)s',
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params={'value1': '42'},
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),
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ValidationError(
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detail='Invalid value: %(value2)s',
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params={'value2': '43'},
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),
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'Invalid value: %(value3)s'
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],
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params={'value3': '44'}
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)
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assert isinstance(error.detail, list)
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assert len(error.detail) == 3
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assert str(error.detail[0]) == 'Invalid value: 42'
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assert str(error.detail[1]) == 'Invalid value: 43'
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assert str(error.detail[2]) == 'Invalid value: 44'
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def test_validation_error_details_validation_errors_nested_list(self):
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error = ValidationError(
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detail=[
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ValidationError(
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detail='Invalid value: %(value1)s',
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params={'value1': '42'},
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),
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ValidationError(
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detail=[
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'Invalid value: %(value2)s',
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ValidationError(
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detail='Invalid value: %(value3)s',
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params={'value3': '44'},
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)
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],
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params={'value2': '43'},
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),
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'Invalid value: %(value4)s'
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],
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params={'value4': '45'}
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)
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assert isinstance(error.detail, list)
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assert len(error.detail) == 4
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assert str(error.detail[0]) == 'Invalid value: 42'
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assert str(error.detail[1]) == 'Invalid value: 43'
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assert str(error.detail[2]) == 'Invalid value: 44'
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assert str(error.detail[3]) == 'Invalid value: 45'
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