docs: def get(request, obj_id=None):
      """Lists all tags
  
      :returns: json
      """
      res = Result()
      if obj_id:
          if obj_id == '0':
              obj = {
                  'id': 0,
                  'name': 'TAGLESS',
                  'artist': False,
              }
          else:
              obj = get_object_or_404(Tag, pk=obj_id).json()
  
          res.append(obj)
          return JsonResponse(res.asDict())
      else:
          if request.GET.get('count'):
              itags = Tag.objects.all().annotate(icount=Count('image'))
              vtags = Tag.objects.all().annotate(vcount=Count('video'))
  
              for i, tag in enumerate(itags):
                  tag.count = itags[i].icount + vtags[i].vcount
                  res.append(tag.json())
          else:
              for tag in Tag.objects.all():
                  res.append(tag.json())
  
          return JsonResponse(res.asDict())