92 lines
3.5 KiB
Python
92 lines
3.5 KiB
Python
from django.core.management.base import BaseCommand
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def module_to_dict(module, omittable=lambda k: k.startswith("_") or not k.isupper()):
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"""Convert a module namespace to a Python dictionary."""
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return {k: repr(getattr(module, k)) for k in dir(module) if not omittable(k)}
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class Command(BaseCommand):
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help = """Displays differences between the current settings.py and Django's
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default settings."""
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requires_system_checks = []
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def add_arguments(self, parser):
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parser.add_argument(
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"--all",
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action="store_true",
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help=(
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'Display all settings, regardless of their value. In "hash" '
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'mode, default values are prefixed by "###".'
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),
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)
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parser.add_argument(
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"--default",
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metavar="MODULE",
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help=(
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"The settings module to compare the current settings against. Leave "
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"empty to compare against Django's default settings."
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),
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)
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parser.add_argument(
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"--output",
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default="hash",
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choices=("hash", "unified"),
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help=(
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"Selects the output format. 'hash' mode displays each changed "
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"setting, with the settings that don't appear in the defaults "
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"followed by ###. 'unified' mode prefixes the default setting "
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"with a minus sign, followed by the changed setting prefixed "
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"with a plus sign."
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),
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)
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def handle(self, **options):
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from django.conf import Settings, global_settings, settings
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# Because settings are imported lazily, we need to explicitly load them.
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if not settings.configured:
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settings._setup()
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user_settings = module_to_dict(settings._wrapped)
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default = options["default"]
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default_settings = module_to_dict(
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Settings(default) if default else global_settings
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)
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output_func = {
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"hash": self.output_hash,
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"unified": self.output_unified,
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}[options["output"]]
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return "\n".join(output_func(user_settings, default_settings, **options))
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def output_hash(self, user_settings, default_settings, **options):
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# Inspired by Postfix's "postconf -n".
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output = []
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for key in sorted(user_settings):
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if key not in default_settings:
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output.append("%s = %s ###" % (key, user_settings[key]))
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elif user_settings[key] != default_settings[key]:
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output.append("%s = %s" % (key, user_settings[key]))
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elif options["all"]:
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output.append("### %s = %s" % (key, user_settings[key]))
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return output
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def output_unified(self, user_settings, default_settings, **options):
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output = []
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for key in sorted(user_settings):
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if key not in default_settings:
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output.append(
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self.style.SUCCESS("+ %s = %s" % (key, user_settings[key]))
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)
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elif user_settings[key] != default_settings[key]:
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output.append(
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self.style.ERROR("- %s = %s" % (key, default_settings[key]))
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)
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output.append(
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self.style.SUCCESS("+ %s = %s" % (key, user_settings[key]))
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)
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elif options["all"]:
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output.append(" %s = %s" % (key, user_settings[key]))
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return output
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