Django class logger not working - django

Question

I have a class named "Photo" in my Django application which is not writing messages to my log file when an error occurs.
My project hierarchy looks like this:
- myproj
- apps
- classes
- classes/__init__.py
- classes/photo.py
Here is my LOGGING configuration setting:
LOGGING = {
'version': 1,
'disable_existing_loggers': True,
'formatters': {
'standard': {
'format' : "[%(asctime)s] %(levelname)s [%(name)s:%(lineno)s] %(message)s",
'datefmt' : "%d/%b/%Y %H:%M:%S"
},
},
'handlers': {
'null': {
'level':'DEBUG',
'class':'django.utils.log.NullHandler',
},
'logfile': {
'level':LOG_LEVEL,
'class':'logging.handlers.RotatingFileHandler',
'filename': '/var/log/myproj/apps.log',
'maxBytes': 50000,
'backupCount': 2,
'formatter': 'standard',
},
'database_logfile': {
'level':LOG_LEVEL,
'class':'logging.handlers.RotatingFileHandler',
'filename': '/var/log/myproj/database.log',
'maxBytes': 50000,
'backupCount': 2,
'formatter': 'standard',
},
'console':{
'level':LOG_LEVEL,
'class':'logging.StreamHandler',
'formatter': 'standard'
},
'mail_admins': {
'level': 'ERROR',
'class': 'django.utils.log.AdminEmailHandler'
# Only send emails when DEBUG = False
#'filters': ['require_debug_false'],
},
},
'loggers': {
'django': {
'handlers':['console'],
'propagate': True,
'level':'WARN',
},
'django.request': {
'handlers': ['mail_admins'],
'level': 'ERROR',
'propagate': False,
},
'django.db.backends': {
'handlers': ['database_logfile'],
'level': 'DEBUG',
'propagate': False,
},
'apps': {
'handlers': ['console', 'logfile', 'mail_admins'],
'level': 'DEBUG',
},
'classes.photo': {
'handlers': ['console', 'logfile', 'mail_admins'],
'level': 'DEBUG',
},
}
}
Here's part of my class:
# photo.py
import logging
logger = logging.getLogger(__name__)
class Photo:
def create_gallery_photo(self):
...
photo_size = os.path.getsize()
if photo_size > PHOTO_SIZE_LIMIT:
logger.error("Photo too big")
At first I only had an 'apps' handler and I realized that the error
wouldn't get logged since photo.py was outside the 'apps' application. But when I added a 'classes' logger I started getting a "No classes could be found for logger" error. Not sure of what to do, I changed the logger to 'classes.photo' and the 'no classes' error went away but the error message still isn't getting logged. I checked 'logger.name' and it's set to 'classes.photo'. Is there something else I need to do because this error is being logged from a class? All the logging in my 'apps' project is working just fine.

Answer 1

Try adding a root logger with a console handler, and see what %(name)s gets logged there. All messages should reach that, unless they first get handled by a logger with propagate=False.
...
'loggers': {
...,
'': {
'handlers': ['console'],
'level': 'DEBUG',
},
}
...