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from __future__ import annotations
from django.core import checks
from django.core.checks import CheckMessage
from django.utils.translation import gettext_lazy as _
def check_fieldsets(*args, **kwargs) -> list[CheckMessage]:
"""
A Django system check to make sure that, if defined,
CONFIG_FIELDSETS is consistent with settings.CONFIG.
"""
from . import settings
errors = []
if hasattr(settings, 'CONFIG_FIELDSETS') and settings.CONFIG_FIELDSETS:
missing_keys, extra_keys = get_inconsistent_fieldnames()
if missing_keys:
check = checks.Warning(
_('CONSTANCE_CONFIG_FIELDSETS is missing field(s) that exists in CONSTANCE_CONFIG.'),
hint=', '.join(sorted(missing_keys)),
obj='settings.CONSTANCE_CONFIG',
id='constance.E001',
)
errors.append(check)
if extra_keys:
check = checks.Warning(
_('CONSTANCE_CONFIG_FIELDSETS contains extra field(s) that does not exist in CONFIG.'),
hint=', '.join(sorted(extra_keys)),
obj='settings.CONSTANCE_CONFIG',
id='constance.E002',
)
errors.append(check)
return errors
def get_inconsistent_fieldnames() -> tuple[set, set]:
"""
Returns a pair of values:
1) set of keys from settings.CONFIG that are not accounted for in settings.CONFIG_FIELDSETS
2) set of keys from settings.CONFIG_FIELDSETS that are not present in settings.CONFIG
If there are no fieldnames in settings.CONFIG_FIELDSETS, returns an empty set.
"""
from . import settings
if isinstance(settings.CONFIG_FIELDSETS, dict):
fieldset_items = settings.CONFIG_FIELDSETS.items()
else:
fieldset_items = settings.CONFIG_FIELDSETS
unique_field_names = set()
for _fieldset_title, fields_list in fieldset_items:
# fields_list can be a dictionary, when a fieldset is defined as collapsible
# https://django-constance.readthedocs.io/en/latest/#fieldsets-collapsing
if isinstance(fields_list, dict) and 'fields' in fields_list:
fields_list = fields_list['fields']
unique_field_names.update(fields_list)
if not unique_field_names:
return unique_field_names, unique_field_names
config_keys = set(settings.CONFIG.keys())
missing_keys = config_keys - unique_field_names
extra_keys = unique_field_names - config_keys
return missing_keys, extra_keys
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