88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
from __future__ import unicode_literals
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from . import Tags, Warning, register
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@register(Tags.urls)
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def check_url_config(app_configs, **kwargs):
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from django.core.urlresolvers import get_resolver
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resolver = get_resolver()
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return check_resolver(resolver)
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def check_resolver(resolver):
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"""
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Recursively check the resolver.
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"""
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from django.core.urlresolvers import RegexURLPattern, RegexURLResolver
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warnings = []
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for pattern in resolver.url_patterns:
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if isinstance(pattern, RegexURLResolver):
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warnings.extend(check_include_trailing_dollar(pattern))
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# Check resolver recursively
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warnings.extend(check_resolver(pattern))
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elif isinstance(pattern, RegexURLPattern):
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warnings.extend(check_pattern_name(pattern))
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warnings.extend(check_pattern_startswith_slash(pattern))
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return warnings
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def describe_pattern(pattern):
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"""
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Format the URL pattern for display in warning messages.
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"""
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description = "'{}'".format(pattern.regex.pattern)
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if getattr(pattern, 'name', False):
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description += " [name='{}']".format(pattern.name)
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return description
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def check_include_trailing_dollar(pattern):
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"""
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Check that include is not used with a regex ending with a dollar.
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"""
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regex_pattern = pattern.regex.pattern
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if regex_pattern.endswith('$') and not regex_pattern.endswith('\$'):
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warning = Warning(
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"Your URL pattern {} uses include with a regex ending with a '$'. "
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"Remove the dollar from the regex to avoid problems including "
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"URLs.".format(describe_pattern(pattern)),
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id="urls.W001",
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)
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return [warning]
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else:
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return []
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def check_pattern_startswith_slash(pattern):
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"""
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Check that the pattern does not begin with a forward slash.
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"""
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regex_pattern = pattern.regex.pattern
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if regex_pattern.startswith('/') or regex_pattern.startswith('^/'):
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warning = Warning(
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"Your URL pattern {} has a regex beginning with a '/'. "
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"Remove this slash as it is unnecessary.".format(describe_pattern(pattern)),
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id="urls.W002",
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)
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return [warning]
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else:
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return []
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def check_pattern_name(pattern):
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"""
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Check that the pattern name does not contain a colon.
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"""
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if pattern.name is not None and ":" in pattern.name:
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warning = Warning(
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"Your URL pattern {} has a name including a ':'. Remove the colon, to "
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"avoid ambiguous namespace references.".format(describe_pattern(pattern)),
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id="urls.W003",
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)
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return [warning]
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else:
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return []
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