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  • Documentation version: 4.0

Codice sorgente per django.contrib.postgres.validators

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 _
from django.utils.translation import 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",
    )


[documenti]@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 = {**self.messages, **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 )
[documenti]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." )
[documenti]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." )
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