Python django.forms.NullBooleanField() Examples

def test_nullbooleanfield_changed(self):
        f = NullBooleanField()
        self.assertTrue(f.has_changed(False, None))
        self.assertTrue(f.has_changed(None, False))
        self.assertFalse(f.has_changed(None, None))
        self.assertFalse(f.has_changed(False, False))
        self.assertTrue(f.has_changed(True, False))
        self.assertTrue(f.has_changed(True, None))
        self.assertTrue(f.has_changed(True, False))
        # HiddenInput widget sends string values for boolean but doesn't clean them in value_from_datadict
        self.assertFalse(f.has_changed(False, 'False'))
        self.assertFalse(f.has_changed(True, 'True'))
        self.assertFalse(f.has_changed(None, ''))
        self.assertTrue(f.has_changed(False, 'True'))
        self.assertTrue(f.has_changed(True, 'False'))
        self.assertTrue(f.has_changed(None, 'False')) 

def test_nullbooleanfield_changed(self):
        f = NullBooleanField()
        self.assertTrue(f.has_changed(False, None))
        self.assertTrue(f.has_changed(None, False))
        self.assertFalse(f.has_changed(None, None))
        self.assertFalse(f.has_changed(False, False))
        self.assertTrue(f.has_changed(True, False))
        self.assertTrue(f.has_changed(True, None))
        self.assertTrue(f.has_changed(True, False))
        # HiddenInput widget sends string values for boolean but doesn't clean them in value_from_datadict
        self.assertFalse(f.has_changed(False, 'False'))
        self.assertFalse(f.has_changed(True, 'True'))
        self.assertFalse(f.has_changed(None, ''))
        self.assertTrue(f.has_changed(False, 'True'))
        self.assertTrue(f.has_changed(True, 'False'))
        self.assertTrue(f.has_changed(None, 'False')) 

def formfield(self, **kwargs):
        defaults = {
            'form_class': forms.NullBooleanField,
            'required': not self.blank,
            'label': capfirst(self.verbose_name),
            'help_text': self.help_text}
        defaults.update(kwargs)
        return super(NullBooleanField, self).formfield(**defaults) 

def __init__(self, *args, **kwargs):
        kwargs['null'] = True
        kwargs['blank'] = True
        super(NullBooleanField, self).__init__(*args, **kwargs) 

def _check_null(self, **kwargs):
        if getattr(self, 'null', False):
            return [
                checks.Error(
                    'BooleanFields do not accept null values.',
                    hint='Use a NullBooleanField instead.',
                    obj=self,
                    id='fields.E110',
                )
            ]
        else:
            return [] 

def __init__(self, *args, **kwargs):
        kwargs['null'] = True
        kwargs['blank'] = True
        super(NullBooleanField, self).__init__(*args, **kwargs) 

def deconstruct(self):
        name, path, args, kwargs = super(NullBooleanField, self).deconstruct()
        del kwargs['null']
        del kwargs['blank']
        return name, path, args, kwargs 

def get_internal_type(self):
        return "NullBooleanField" 

def get_prep_value(self, value):
        value = super(NullBooleanField, self).get_prep_value(value)
        if value is None:
            return None
        return self.to_python(value) 

def test_should_nullboolean_convert_boolean():
    field = assert_conversion(forms.NullBooleanField, Boolean)
    assert not isinstance(field.type, NonNull) 

def test_nullbooleanfield_clean(self):
        f = NullBooleanField()
        self.assertIsNone(f.clean(''))
        self.assertTrue(f.clean(True))
        self.assertFalse(f.clean(False))
        self.assertIsNone(f.clean(None))
        self.assertFalse(f.clean('0'))
        self.assertTrue(f.clean('1'))
        self.assertIsNone(f.clean('2'))
        self.assertIsNone(f.clean('3'))
        self.assertIsNone(f.clean('hello'))
        self.assertTrue(f.clean('true'))
        self.assertFalse(f.clean('false')) 

def test_nullbooleanfield_2(self):
        # The internal value is preserved if using HiddenInput (#7753).
        class HiddenNullBooleanForm(Form):
            hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)
            hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)
        f = HiddenNullBooleanForm()
        self.assertHTMLEqual(
            '<input type="hidden" name="hidden_nullbool1" value="True" id="id_hidden_nullbool1">'
            '<input type="hidden" name="hidden_nullbool2" value="False" id="id_hidden_nullbool2">',
            str(f)
        ) 

def test_nullbooleanfield_3(self):
        class HiddenNullBooleanForm(Form):
            hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)
            hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)
        f = HiddenNullBooleanForm({'hidden_nullbool1': 'True', 'hidden_nullbool2': 'False'})
        self.assertIsNone(f.full_clean())
        self.assertTrue(f.cleaned_data['hidden_nullbool1'])
        self.assertFalse(f.cleaned_data['hidden_nullbool2']) 

def test_nullbooleanfield_4(self):
        # Make sure we're compatible with MySQL, which uses 0 and 1 for its
        # boolean values (#9609).
        NULLBOOL_CHOICES = (('1', 'Yes'), ('0', 'No'), ('', 'Unknown'))

        class MySQLNullBooleanForm(Form):
            nullbool0 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
            nullbool1 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
            nullbool2 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
        f = MySQLNullBooleanForm({'nullbool0': '1', 'nullbool1': '0', 'nullbool2': ''})
        self.assertIsNone(f.full_clean())
        self.assertTrue(f.cleaned_data['nullbool0'])
        self.assertFalse(f.cleaned_data['nullbool1'])
        self.assertIsNone(f.cleaned_data['nullbool2']) 

def test_nullbooleanfield_old_to_python(self):
        self._test_to_python(models.NullBooleanField()) 

def test_nullbooleanfield_formfield(self):
        f = models.BooleanField(null=True)
        self.assertIsInstance(f.formfield(), forms.NullBooleanField)
        f = models.NullBooleanField()
        self.assertIsInstance(f.formfield(), forms.NullBooleanField) 

def test_nullbooleanfield_blank(self):
        """
        NullBooleanField shouldn't throw a validation error when given a value
        of None.
        """
        nullboolean = NullBooleanModel(nbfield=None, nbfield_old=None)
        nullboolean.full_clean() 

def test_nullbooleanfield_clean(self):
        f = NullBooleanField()
        self.assertIsNone(f.clean(''))
        self.assertTrue(f.clean(True))
        self.assertFalse(f.clean(False))
        self.assertIsNone(f.clean(None))
        self.assertFalse(f.clean('0'))
        self.assertTrue(f.clean('1'))
        self.assertIsNone(f.clean('2'))
        self.assertIsNone(f.clean('3'))
        self.assertIsNone(f.clean('hello'))
        self.assertTrue(f.clean('true'))
        self.assertFalse(f.clean('false')) 

def test_nullbooleanfield_2(self):
        # The internal value is preserved if using HiddenInput (#7753).
        class HiddenNullBooleanForm(Form):
            hidden_nullbool1 = NullBooleanField(widget=HiddenInput, initial=True)
            hidden_nullbool2 = NullBooleanField(widget=HiddenInput, initial=False)
        f = HiddenNullBooleanForm()
        self.assertHTMLEqual(
            '<input type="hidden" name="hidden_nullbool1" value="True" id="id_hidden_nullbool1">'
            '<input type="hidden" name="hidden_nullbool2" value="False" id="id_hidden_nullbool2">',
            str(f)
        ) 

def test_nullbooleanfield_4(self):
        # Make sure we're compatible with MySQL, which uses 0 and 1 for its
        # boolean values (#9609).
        NULLBOOL_CHOICES = (('1', 'Yes'), ('0', 'No'), ('', 'Unknown'))

        class MySQLNullBooleanForm(Form):
            nullbool0 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
            nullbool1 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
            nullbool2 = NullBooleanField(widget=RadioSelect(choices=NULLBOOL_CHOICES))
        f = MySQLNullBooleanForm({'nullbool0': '1', 'nullbool1': '0', 'nullbool2': ''})
        self.assertIsNone(f.full_clean())
        self.assertTrue(f.cleaned_data['nullbool0'])
        self.assertFalse(f.cleaned_data['nullbool1'])
        self.assertIsNone(f.cleaned_data['nullbool2']) 

def test_nullbooleanfield_old_get_prep_value(self):
        self._test_get_prep_value(models.NullBooleanField()) 

def test_nullbooleanfield_old_to_python(self):
        self._test_to_python(models.NullBooleanField()) 

def test_nullbooleanfield_formfield(self):
        f = models.BooleanField(null=True)
        self.assertIsInstance(f.formfield(), forms.NullBooleanField)
        f = models.NullBooleanField()
        self.assertIsInstance(f.formfield(), forms.NullBooleanField) 

def get_internal_type(self):
        return "NullBooleanField" 

def _check_null(self, **kwargs):
        if getattr(self, 'null', False):
            return [
                checks.Error(
                    'BooleanFields do not accept null values.',
                    hint='Use a NullBooleanField instead.',
                    obj=self,
                    id='fields.E110',
                )
            ]
        else:
            return [] 

def deconstruct(self):
        name, path, args, kwargs = super(NullBooleanField, self).deconstruct()
        del kwargs['null']
        del kwargs['blank']
        return name, path, args, kwargs 

def get_internal_type(self):
        return "NullBooleanField" 

def get_prep_lookup(self, lookup_type, value):
        # Special-case handling for filters coming from a Web request (e.g. the
        # admin interface). Only works for scalar values (not lists). If you're
        # passing in a list, you might as well make things the right type when
        # constructing the list.
        if value in ('1', '0'):
            value = bool(int(value))
        return super(NullBooleanField, self).get_prep_lookup(lookup_type,
                                                             value) 

def formfield(self, **kwargs):
        defaults = {
            'form_class': forms.NullBooleanField,
            'required': not self.blank,
            'label': capfirst(self.verbose_name),
            'help_text': self.help_text}
        defaults.update(kwargs)
        return super(NullBooleanField, self).formfield(**defaults) 

def _check_null(self, **kwargs):
        if getattr(self, 'null', False):
            return [
                checks.Error(
                    'BooleanFields do not accept null values.',
                    hint='Use a NullBooleanField instead.',
                    obj=self,
                    id='fields.E110',
                )
            ]
        else:
            return []