add quick meta filter

        verbose_name_plural = "fichiers"

        unique_together = (("project", "hash"),)

    def filter_meta(self, full_meta_title: str, default_value=None):

        """

        Simple access to wanted meta. ":" is used as a separator.

        Ex:

            some_file.quick_meta("ExifTool:ID3:Album", "")

        """

        full_meta_title = full_meta_title.lower()

        for metaval in self.metadataresourcevalue_set.all():

            current_meta_title = "{}:{}".format(

                metaval.metadata.set.title, metaval.metadata.title

            ).lower()

            if current_meta_title == full_meta_title:

                return metaval.value

        return default_value

    def iiif_infos_url(self) -> str:

        if self.should_have_iiif():

            return "{}{}/info.json".format(