whitenoise_mtimes.py

"""
Extends WhiteNoise so that it always re-checks the mtimes of files before serving
(and updates Content-Length headers as well).

Possibly useful if you are using WhiteNoise in development and want to modify files
without restarting the server. (Note: this won't pick up added/deleted files, you'll
still need a restart for that.)

Use the Django setting `WHITENOISE_RECHECK_MTIMES` to enable.

Don't enable in production (for one thing, it disables gzip support).
"""
class WhiteNoiseMtimes(DjangoWhiteNoise):

    recheck_mtimes = False
    config_attrs = DjangoWhiteNoise.config_attrs + ('recheck_mtimes',)

    def file_not_modified(self, static_file, environ):
        if self.recheck_mtimes:
            # We make no attempt to update the gzip_headers so just
            # disable gzip support to avoid possibly confusing bugs
            static_file.gzip_path = None
            # `url` is passed to all `all_XXX_headers` methods but isn't actually
            # used in this case
            self.add_stat_headers(self, static_file, url=None)
        return super(WhiteNoiseMtimes, self).file_not_modified(static_file, environ)