controller_file_id
Redirect to the controller controller_file.
This controller maps a resource id to the filename of the medium associated with the resource.
For the redirect it uses the dispatch rule defined in the dispatch options.
Examples from mod_base:
{media_inline, ["media","inline","id",id], controller_file_id, [ {dispatch, media_inline}, {ssl, any} ]},
{media_inline, ["media","inline",'*'], controller_file, [ {content_disposition, inline}, {ssl, any} ]},
The first dispatch rule will redirect to the second. If no associated file was found, then a 404 is returned.