def on_trackid(self,*args):
try:
track = Track.get(self.trackid)
self._container.clear_widgets()
if track.lyricist:
self._container.add_widget(ArtBox(category='lyricist',model=track.lyricist,title='شاعر'))
if track.composer:
self._container.add_widget(ArtBox(category='composer',model=track.composer,title='آهنگساز'))
if track.artist:
self._container.add_widget(ArtBox(category='artist',model=track.artist,title='خواننده'))
except:
raise
