proc removeFeedFromUser*(user: User, line: string) =
  var feed = newFeed()
  try:
    db().select(feed, "channel_id = ?", line)
    var relations: seq[UserFeed] = @[newUserFeed()]
    var feeds: seq[Feed] = @[newFeed()]
    db().selectManyToMany(user, relations, feeds)
    for relation in relations:
      if relation.feed.channel_id == line:
        var rel = relation
        db().delete(rel)
    db().delete(feed)
  except NotFoundError:
    discard
  except DbError:
    discard