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import copy
from django.conf import settings
from . import Error, Tags, register
E001 = Error(
"You have 'APP_DIRS': True in your TEMPLATES but also specify 'loaders' "
"in OPTIONS. Either remove APP_DIRS or remove the 'loaders' option.",
id='templates.E001',
)
E002 = Error(
"'string_if_invalid' in TEMPLATES OPTIONS must be a string but got: {} ({}).",
id="templates.E002",
)
@register(Tags.templates)
def check_setting_app_dirs_loaders(app_configs, **kwargs):
return [E001] if any(
conf.get('APP_DIRS') and 'loaders' in conf.get('OPTIONS', {})
for conf in settings.TEMPLATES
) else []
@register(Tags.templates)
def check_string_if_invalid_is_string(app_configs, **kwargs):
errors = []
for conf in settings.TEMPLATES:
string_if_invalid = conf.get('OPTIONS', {}).get('string_if_invalid', '')
if not isinstance(string_if_invalid, str):
error = copy.copy(E002)
error.msg = error.msg.format(string_if_invalid, type(string_if_invalid).__name__)
errors.append(error)
return errors
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