Subclass the Flask exception handler

myflask.py

'''
Original here: https://github.com/mitsuhiko/flask/blob/master/flask/app.py#L1295
'''
from flask import Flask

class MyFlask(Flask):

    def log_exception(self, exc_info):
        """
        Overriden to provide the full url (including scheme, hostname and query string)
        in the error message
        """
        self.logger.error('Exception on %s [%s]' % (
            request.url, # This is what we've changed from the original
            request.method
        ), exc_info=exc_info)