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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
compatibility	[ DIR ]	drwxr-xr-x
security	[ DIR ]	drwxr-xr-x
__init__.py	994 B	-rw-r--r--
async_checks.py	403 B	-rw-r--r--
caches.py	2.49 KB	-rw-r--r--
database.py	341 B	-rw-r--r--
messages.py	2.11 KB	-rw-r--r--
model_checks.py	8.4 KB	-rw-r--r--
registry.py	3.16 KB	-rw-r--r--
templates.py	1.07 KB	-rw-r--r--
translation.py	1.93 KB	-rw-r--r--
urls.py	3.17 KB	-rw-r--r--

Code Editor : urls.py

from collections import Counter

from django.conf import settings

from . import Error, Tags, Warning, register

@register(Tags.urls)
def check_url_config(app_configs, **kwargs):
    if getattr(settings, 'ROOT_URLCONF', None):
        from django.urls import get_resolver
        resolver = get_resolver()
        return check_resolver(resolver)
    return []

def check_resolver(resolver):
    """
    Recursively check the resolver.
    """
    check_method = getattr(resolver, 'check', None)
    if check_method is not None:
        return check_method()
    elif not hasattr(resolver, 'resolve'):
        return get_warning_for_invalid_pattern(resolver)
    else:
        return []

@register(Tags.urls)
def check_url_namespaces_unique(app_configs, **kwargs):
    """
    Warn if URL namespaces used in applications aren't unique.
    """
    if not getattr(settings, 'ROOT_URLCONF', None):
        return []

from django.urls import get_resolver
    resolver = get_resolver()
    all_namespaces = _load_all_namespaces(resolver)
    counter = Counter(all_namespaces)
    non_unique_namespaces = [n for n, count in counter.items() if count > 1]
    errors = []
    for namespace in non_unique_namespaces:
        errors.append(Warning(
            "URL namespace '{}' isn't unique. You may not be able to reverse "
            "all URLs in this namespace".format(namespace),
            id="urls.W005",
        ))
    return errors

def _load_all_namespaces(resolver, parents=()):
    """
    Recursively load all namespaces from URL patterns.
    """
    url_patterns = getattr(resolver, 'url_patterns', [])
    namespaces = [
        ':'.join(parents + (url.namespace,)) for url in url_patterns
        if getattr(url, 'namespace', None) is not None
    ]
    for pattern in url_patterns:
        namespace = getattr(pattern, 'namespace', None)
        current = parents
        if namespace is not None:
            current += (namespace,)
        namespaces.extend(_load_all_namespaces(pattern, current))
    return namespaces

def get_warning_for_invalid_pattern(pattern):
    """
    Return a list containing a warning that the pattern is invalid.

describe_pattern() cannot be used here, because we cannot rely on the
    urlpattern having regex or name attributes.
    """
    if isinstance(pattern, str):
        hint = (
            "Try removing the string '{}'. The list of urlpatterns should not "
            "have a prefix string as the first element.".format(pattern)
        )
    elif isinstance(pattern, tuple):
        hint = "Try using path() instead of a tuple."
    else:
        hint = None

return [Error(
        "Your URL pattern {!r} is invalid. Ensure that urlpatterns is a list "
        "of path() and/or re_path() instances.".format(pattern),
        hint=hint,
        id="urls.E004",
    )]

@register(Tags.urls)
def check_url_settings(app_configs, **kwargs):
    errors = []
    for name in ('STATIC_URL', 'MEDIA_URL'):
        value = getattr(settings, name)
        if value and not value.endswith('/'):
            errors.append(E006(name))
    return errors

def E006(name):
    return Error(
        'The {} setting must end with a slash.'.format(name),
        id='urls.E006',
    )

${this.title}

Code Editor : urls.py