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import functools
import uuid
import warnings
from django.utils.deprecation import RemovedInDjango60Warning
class IntConverter:
regex = "[0-9]+"
def to_python(self, value):
return int(value)
def to_url(self, value):
return str(value)
class StringConverter:
regex = "[^/]+"
def to_python(self, value):
return value
def to_url(self, value):
return value
class UUIDConverter:
regex = "[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}"
def to_python(self, value):
return uuid.UUID(value)
def to_url(self, value):
return str(value)
class SlugConverter(StringConverter):
regex = "[-a-zA-Z0-9_]+"
class PathConverter(StringConverter):
regex = ".+"
DEFAULT_CONVERTERS = {
"int": IntConverter(),
"path": PathConverter(),
"slug": SlugConverter(),
"str": StringConverter(),
"uuid": UUIDConverter(),
}
REGISTERED_CONVERTERS = {}
def register_converter(converter, type_name):
if type_name in REGISTERED_CONVERTERS or type_name in DEFAULT_CONVERTERS:
# RemovedInDjango60Warning: when the deprecation ends, replace with
# raise ValueError(f"Converter {type_name} is already registered.")
warnings.warn(
f"Converter {type_name!r} is already registered. Support for overriding "
"registered converters is deprecated and will be removed in Django 6.0.",
RemovedInDjango60Warning,
stacklevel=2,
)
REGISTERED_CONVERTERS[type_name] = converter()
get_converters.cache_clear()
from django.urls.resolvers import _route_to_regex
_route_to_regex.cache_clear()
@functools.cache
def get_converters():
return {**DEFAULT_CONVERTERS, **REGISTERED_CONVERTERS}
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