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