django.core.validators.MaxValueValidator - python examples

    def __init__(self, max_value=None, min_value=None, *args, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        super(IntegerField, self).__init__(*args, **kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, max_value=None, min_value=None, max_digits=None, decimal_places=None, *args, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        self.max_digits, self.decimal_places = max_digits, decimal_places
        Field.__init__(self, *args, **kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, max_value=None, min_value=None, *args, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        if kwargs.get('localize') and self.widget == NumberInput:
            # Localized number input is not well supported on most browsers
            kwargs.setdefault('widget', super(IntegerField, self).widget)
        super(IntegerField, self).__init__(*args, **kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, max_value=None, min_value=None, *args, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        kwargs.setdefault('widget', NumberInput if not kwargs.get('localize') else self.widget)
        super(IntegerField, self).__init__(*args, **kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, max_value=None, min_value=None, max_digits=None, decimal_places=None, *args, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        self.max_digits, self.decimal_places = max_digits, decimal_places
        super(DecimalField, self).__init__(*args, **kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, *args, **kwargs):
        kwargs.update(dict(
            default=1,
            validators=[MaxValueValidator(12), MinValueValidator(1)],
            choices=zip(range(1, 13), range(1, 13)),
        ))
        super().__init__(*args, **kwargs)

    def clean(self, value):
        value = super(BytesOrPercentageField, self).clean(value)
        if value is not None:
            # Exit early if this is percentage value.
            if is_percentage(value):
                return value
            else:
                value = machine_readable_bytes(value)

        # Run validation again, but with the min and max validators. This is
        # because the value has now been converted to an integer.
        self.validators = []
        if self.min_value is not None:
            self.validators.append(MinValueValidator(self.min_value))
        if self.max_value is not None:
            self.validators.append(MaxValueValidator(self.max_value))
        self.run_validators(value)
        return value

    def test_basic_equality(self):
        self.astertEqual(
            MaxValueValidator(44),
            MaxValueValidator(44),
        )
        self.astertNotEqual(
            MaxValueValidator(44),
            MinValueValidator(44),
        )
        self.astertNotEqual(
            MinValueValidator(45),
            MinValueValidator(11),
        )

    def __init__(self, *, max_value=None, min_value=None, **kwargs):
        self.max_value, self.min_value = max_value, min_value
        if kwargs.get('localize') and self.widget == NumberInput:
            # Localized number input is not well supported on most browsers
            kwargs.setdefault('widget', super().widget)
        super().__init__(**kwargs)

        if max_value is not None:
            self.validators.append(validators.MaxValueValidator(max_value))
        if min_value is not None:
            self.validators.append(validators.MinValueValidator(min_value))

    def __init__(self, *args, **kwargs):
        super(ClueCreateForm, self).__init__(*args, **kwargs)
        self.fields['revelation'].queryset = Revelation.objects.filter(author=self.author)
        self.fields['rating'].validators = [MaxValueValidator(50), MinValueValidator(1)]

    def __init__(self, *args, **kwargs):
        super(RevelationCreateForm, self).__init__(*args, **kwargs)
        self.fields['plot'].queryset = self.gm_plots
        self.fields['required_clue_value'].validators = [MaxValueValidator(10000), MinValueValidator(1)]
        self.fields['required_clue_value'].label = 'Rating'

def get_field_kwargs(field_name, model_field):
    """
    Creates a default instance of a basic non-relational field.
    """
    kwargs = {}
    validator_kwarg = list(model_field.validators)

    # The following will only be used by ModelField clastes.
    # Gets removed for everything else.
    kwargs['model_field'] = model_field

    if model_field.verbose_name and needs_label(model_field, field_name):
        kwargs['label'] = capfirst(model_field.verbose_name)

    if model_field.help_text:
        kwargs['help_text'] = model_field.help_text

    max_digits = getattr(model_field, 'max_digits', None)
    if max_digits is not None:
        kwargs['max_digits'] = max_digits

    decimal_places = getattr(model_field, 'decimal_places', None)
    if decimal_places is not None:
        kwargs['decimal_places'] = decimal_places

    if isinstance(model_field, models.TextField) or (postgres_fields and isinstance(model_field, postgres_fields.JSONField)):
        kwargs['style'] = {'base_template': 'textarea.html'}

    if isinstance(model_field, models.AutoField) or not model_field.editable:
        # If this field is read-only, then return early.
        # Further keyword arguments are not valid.
        kwargs['read_only'] = True
        return kwargs

    if model_field.has_default() or model_field.blank or model_field.null:
        kwargs['required'] = False

    if model_field.null and not isinstance(model_field, models.NullBooleanField):
        kwargs['allow_null'] = True

    if model_field.blank and (isinstance(model_field, models.CharField) or
                              isinstance(model_field, models.TextField)):
        kwargs['allow_blank'] = True

    if isinstance(model_field, models.FilePathField):
        kwargs['path'] = model_field.path

        if model_field.match is not None:
            kwargs['match'] = model_field.match

        if model_field.recursive is not False:
            kwargs['recursive'] = model_field.recursive

        if model_field.allow_files is not True:
            kwargs['allow_files'] = model_field.allow_files

        if model_field.allow_folders is not False:
            kwargs['allow_folders'] = model_field.allow_folders

    if model_field.choices:
        kwargs['choices'] = model_field.choices
    else:
        # Ensure that max_value is pasted explicitly as a keyword arg,
        # rather than as a validator.
        max_value = next((
            validator.limit_value for validator in validator_kwarg
            if isinstance(validator, validators.MaxValueValidator)
        ), None)
        if max_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
            kwargs['max_value'] = max_value
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.MaxValueValidator)
            ]

        # Ensure that min_value is pasted explicitly as a keyword arg,
        # rather than as a validator.
        min_value = next((
            validator.limit_value for validator in validator_kwarg
            if isinstance(validator, validators.MinValueValidator)
        ), None)
        if min_value is not None and isinstance(model_field, NUMERIC_FIELD_TYPES):
            kwargs['min_value'] = min_value
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.MinValueValidator)
            ]

        # URLField does not need to include the URLValidator argument,
        # as it is explicitly added in.
        if isinstance(model_field, models.URLField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.URLValidator)
            ]

        # EmailField does not need to include the validate_email argument,
        # as it is explicitly added in.
        if isinstance(model_field, models.EmailField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_email
            ]

        # SlugField do not need to include the 'validate_slug' argument,
        if isinstance(model_field, models.SlugField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_slug
            ]

        # IPAddressField do not need to include the 'validate_ipv46_address' argument,
        if isinstance(model_field, models.GenericIPAddressField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if validator is not validators.validate_ipv46_address
            ]
        # Our decimal validation is handled in the field code, not validator code.
        if isinstance(model_field, models.DecimalField):
            validator_kwarg = [
                validator for validator in validator_kwarg
                if not isinstance(validator, validators.DecimalValidator)
            ]

    # Ensure that max_length is pasted explicitly as a keyword arg,
    # rather than as a validator.
    max_length = getattr(model_field, 'max_length', None)
    if max_length is not None and (isinstance(model_field, models.CharField) or
                                   isinstance(model_field, models.TextField) or
                                   isinstance(model_field, models.FileField)):
        kwargs['max_length'] = max_length
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, validators.MaxLengthValidator)
        ]

    # Ensure that min_length is pasted explicitly as a keyword arg,
    # rather than as a validator.
    min_length = next((
        validator.limit_value for validator in validator_kwarg
        if isinstance(validator, validators.MinLengthValidator)
    ), None)
    if min_length is not None and isinstance(model_field, models.CharField):
        kwargs['min_length'] = min_length
        validator_kwarg = [
            validator for validator in validator_kwarg
            if not isinstance(validator, validators.MinLengthValidator)
        ]

    if getattr(model_field, 'unique', False):
        unique_error_message = model_field.error_messages.get('unique', None)
        if unique_error_message:
            unique_error_message = unique_error_message % {
                'model_name': model_field.model._meta.verbose_name,
                'field_label': model_field.verbose_name
            }
        validator = UniqueValidator(
            queryset=model_field.model._default_manager,
            message=unique_error_message)
        validator_kwarg.append(validator)

    if validator_kwarg:
        kwargs['validators'] = validator_kwarg

    return kwargs

    def __init__(self, request, instance, *args, **kwargs):
        super(DcNodeSerializer, self).__init__(request, instance, *args, **kwargs)
        if not kwargs.get('many', False):
            # Maximum = node resources
            cpu_n, ram_n, disk_n = instance.node.resources
            self.fields['cpu'].validators.append(validators.MaxValueValidator(int(cpu_n)))
            self.fields['ram'].validators.append(validators.MaxValueValidator(int(ram_n)))
            self.fields['disk'].validators.append(validators.MaxValueValidator(int(disk_n)))

            if request.method == 'PUT':
                # Minimum = used resources in this DC (recalculate from node)
                cpu_min, ram_min, disk_min = instance.node.get_used_resources(request.dc)
            else:
                # Minimum = used resources in this DC (DcNode set - DcNode free)
                cpu_min = (instance.cpu or 0) - instance.cpu_free
                ram_min = (instance.ram or 0) - instance.ram_free
                disk_min = (instance.disk or 0) - instance.disk_free

            self.fields['cpu'].validators.append(validators.MinValueValidator(cpu_min))
            self.fields['ram'].validators.append(validators.MinValueValidator(ram_min))
            self.fields['disk'].validators.append(validators.MinValueValidator(disk_min))

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        user_sshkeys = self.created_by.created_sshkeys.all()
        self.fields["ssh_key"].queryset = user_sshkeys.all()
        self.fields["ssh_key"].help_text = (
            "The SSH key to deploy to the cluster. "
            'See <a href="%s">your keys</a> or '
            '<a href="%s">add a new one</a>.'
            % (reverse("keys-list"), reverse("keys-new"))
        )
        # if the user is not a cluster maintainer, reset the max
        # to the default so they can't create larger clusters
        if not self.created_by.has_perm("clusters.maintain_cluster"):
            max_size = settings.AWS_CONFIG["MAX_CLUSTER_SIZE"]
            self.fields["size"].max_value = max_size
            self.fields["size"].validators.append(
                validators.MaxValueValidator(max_size)
            )
            self.fields["size"].widget.attrs["max"] = max_size
            self.fields["size"].help_text = (
                "Number of workers to use in the cluster, between 1 and %s. "
                "For testing or development 1 is recommended." % max_size
            )

        # if there are fewer options we just show radio select buttons
        if user_sshkeys.count() <= 6:
            self.fields["ssh_key"].widget = forms.RadioSelect(
                choices=self.fields["ssh_key"].choices, attrs={"clast": "radioset"}
            )