80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
import copy
|
|
|
|
from django.core.exceptions import ValidationError
|
|
from django.core.validators import (
|
|
MaxLengthValidator, MaxValueValidator, MinLengthValidator,
|
|
MinValueValidator,
|
|
)
|
|
from django.utils.deconstruct import deconstructible
|
|
from django.utils.translation import gettext_lazy as _, ngettext_lazy
|
|
|
|
|
|
class ArrayMaxLengthValidator(MaxLengthValidator):
|
|
message = ngettext_lazy(
|
|
'List contains %(show_value)d item, it should contain no more than %(limit_value)d.',
|
|
'List contains %(show_value)d items, it should contain no more than %(limit_value)d.',
|
|
'limit_value')
|
|
|
|
|
|
class ArrayMinLengthValidator(MinLengthValidator):
|
|
message = ngettext_lazy(
|
|
'List contains %(show_value)d item, it should contain no fewer than %(limit_value)d.',
|
|
'List contains %(show_value)d items, it should contain no fewer than %(limit_value)d.',
|
|
'limit_value')
|
|
|
|
|
|
@deconstructible
|
|
class KeysValidator:
|
|
"""A validator designed for HStore to require/restrict keys."""
|
|
|
|
messages = {
|
|
'missing_keys': _('Some keys were missing: %(keys)s'),
|
|
'extra_keys': _('Some unknown keys were provided: %(keys)s'),
|
|
}
|
|
strict = False
|
|
|
|
def __init__(self, keys, strict=False, messages=None):
|
|
self.keys = set(keys)
|
|
self.strict = strict
|
|
if messages is not None:
|
|
self.messages = copy.copy(self.messages)
|
|
self.messages.update(messages)
|
|
|
|
def __call__(self, value):
|
|
keys = set(value)
|
|
missing_keys = self.keys - keys
|
|
if missing_keys:
|
|
raise ValidationError(
|
|
self.messages['missing_keys'],
|
|
code='missing_keys',
|
|
params={'keys': ', '.join(missing_keys)},
|
|
)
|
|
if self.strict:
|
|
extra_keys = keys - self.keys
|
|
if extra_keys:
|
|
raise ValidationError(
|
|
self.messages['extra_keys'],
|
|
code='extra_keys',
|
|
params={'keys': ', '.join(extra_keys)},
|
|
)
|
|
|
|
def __eq__(self, other):
|
|
return (
|
|
isinstance(other, self.__class__) and
|
|
self.keys == other.keys and
|
|
self.messages == other.messages and
|
|
self.strict == other.strict
|
|
)
|
|
|
|
|
|
class RangeMaxValueValidator(MaxValueValidator):
|
|
def compare(self, a, b):
|
|
return a.upper is None or a.upper > b
|
|
message = _('Ensure that this range is completely less than or equal to %(limit_value)s.')
|
|
|
|
|
|
class RangeMinValueValidator(MinValueValidator):
|
|
def compare(self, a, b):
|
|
return a.lower is None or a.lower < b
|
|
message = _('Ensure that this range is completely greater than or equal to %(limit_value)s.')
|