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Merge pull request #2330 from tomchristie/better-blank-html-behavior
Better behavior with null and '' for blank HTML fields.
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commit
ffb8d568e0
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@ -273,7 +273,11 @@ class Field(object):
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return empty
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return self.default_empty_html
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ret = dictionary[self.field_name]
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return self.default_empty_html if (ret == '') else ret
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if ret == '' and self.allow_null:
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# If the field is blank, and null is a valid value then
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# determine if we should use null instead.
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return '' if getattr(self, 'allow_blank', False) else None
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return ret
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return dictionary.get(self.field_name, empty)
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def get_attribute(self, instance):
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@ -545,8 +549,6 @@ class CharField(Field):
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'min_length': _('Ensure this field has at least {min_length} characters.')
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}
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initial = ''
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coerce_blank_to_null = False
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default_empty_html = ''
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def __init__(self, **kwargs):
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self.allow_blank = kwargs.pop('allow_blank', False)
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@ -560,11 +562,6 @@ class CharField(Field):
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message = self.error_messages['min_length'].format(min_length=min_length)
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self.validators.append(MinLengthValidator(min_length, message=message))
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if self.allow_null and (not self.allow_blank) and (self.default is empty):
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# HTML input cannot represent `None` values, so we need to
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# forcibly coerce empty HTML values to `None` if `allow_null=True`.
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self.default_empty_html = None
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def run_validation(self, data=empty):
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# Test for the empty string here so that it does not get validated,
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# and so that subclasses do not need to handle it explicitly
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@ -223,8 +223,8 @@ class MockHTMLDict(dict):
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getlist = None
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class TestCharHTMLInput:
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def test_empty_html_checkbox(self):
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class TestHTMLInput:
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def test_empty_html_charfield(self):
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class TestSerializer(serializers.Serializer):
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message = serializers.CharField(default='happy')
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@ -232,23 +232,31 @@ class TestCharHTMLInput:
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assert serializer.is_valid()
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assert serializer.validated_data == {'message': 'happy'}
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def test_empty_html_checkbox_allow_null(self):
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def test_empty_html_charfield_allow_null(self):
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class TestSerializer(serializers.Serializer):
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message = serializers.CharField(allow_null=True)
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serializer = TestSerializer(data=MockHTMLDict())
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serializer = TestSerializer(data=MockHTMLDict({'message': ''}))
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assert serializer.is_valid()
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assert serializer.validated_data == {'message': None}
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def test_empty_html_checkbox_allow_null_allow_blank(self):
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def test_empty_html_datefield_allow_null(self):
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class TestSerializer(serializers.Serializer):
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expiry = serializers.DateField(allow_null=True)
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serializer = TestSerializer(data=MockHTMLDict({'expiry': ''}))
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assert serializer.is_valid()
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assert serializer.validated_data == {'expiry': None}
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def test_empty_html_charfield_allow_null_allow_blank(self):
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class TestSerializer(serializers.Serializer):
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message = serializers.CharField(allow_null=True, allow_blank=True)
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serializer = TestSerializer(data=MockHTMLDict({}))
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serializer = TestSerializer(data=MockHTMLDict({'message': ''}))
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assert serializer.is_valid()
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assert serializer.validated_data == {'message': ''}
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def test_empty_html_required_false(self):
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def test_empty_html_charfield_required_false(self):
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class TestSerializer(serializers.Serializer):
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message = serializers.CharField(required=False)
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