A media's container id (<pk>_<authorPk>): its two halves, one parser for every screen that names a media by one or the other. The pk is the part before the first _, the author the part after it; a string without _ is its own pk and has no author.
<pk>_<authorPk>
_
A media's container id (
<pk>_<authorPk>): its two halves, one parser for every screen that names a media by one or the other. The pk is the part before the first_, the author the part after it; a string without_is its own pk and has no author.