django.urls.conf 源代码

"""Functions for use in URLsconfs."""
from functools import partial
from importlib import import_module

from django.core.exceptions import ImproperlyConfigured

from .resolvers import (
    LocalePrefixPattern, RegexPattern, RoutePattern, URLPattern, URLResolver,

[文档]def include(arg, namespace=None): app_name = None if isinstance(arg, tuple): # Callable returning a namespace hint. try: urlconf_module, app_name = arg except ValueError: if namespace: raise ImproperlyConfigured( 'Cannot override the namespace for a dynamic module that ' 'provides a namespace.' ) raise ImproperlyConfigured( 'Passing a %d-tuple to include() is not supported. Pass a ' '2-tuple containing the list of patterns and app_name, and ' 'provide the namespace argument to include() instead.' % len(arg) ) else: # No namespace hint - use manually provided namespace. urlconf_module = arg if isinstance(urlconf_module, str): urlconf_module = import_module(urlconf_module) patterns = getattr(urlconf_module, 'urlpatterns', urlconf_module) app_name = getattr(urlconf_module, 'app_name', app_name) if namespace and not app_name: raise ImproperlyConfigured( 'Specifying a namespace in include() without providing an app_name ' 'is not supported. Set the app_name attribute in the included ' 'module, or pass a 2-tuple containing the list of patterns and ' 'app_name instead.', ) namespace = namespace or app_name # Make sure the patterns can be iterated through (without this, some # testcases will break). if isinstance(patterns, (list, tuple)): for url_pattern in patterns: pattern = getattr(url_pattern, 'pattern', None) if isinstance(pattern, LocalePrefixPattern): raise ImproperlyConfigured( 'Using i18n_patterns in an included URLconf is not allowed.' ) return (urlconf_module, app_name, namespace)
def _path(route, view, kwargs=None, name=None, Pattern=None): if isinstance(view, (list, tuple)): # For include(...) processing. pattern = Pattern(route, is_endpoint=False) urlconf_module, app_name, namespace = view return URLResolver( pattern, urlconf_module, kwargs, app_name=app_name, namespace=namespace, ) elif callable(view): pattern = Pattern(route, name=name, is_endpoint=True) return URLPattern(pattern, view, kwargs, name) else: raise TypeError('view must be a callable or a list/tuple in the case of include().') path = partial(_path, Pattern=RoutePattern) re_path = partial(_path, Pattern=RegexPattern)
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