public static function add($userId, $artistName, $songName, $partName)
{
$pdo = new PDO('mysql:host=localhost; dbname=twitter_band', 'root', '');
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$artist = Artist::insertAndGet($pdo, $artistName);
$song = Song::insertAndGet($pdo, $songName, $artist);
$part = Part::insertAndGet($pdo, $partName);
$st = $pdo->prepare('
select * from repertoire
where user_id = ? and artist_id = ? and song_id = ? and part_id = ?');
$st->execute(array($userId, $artist->id, $song->id, $part->id));
if ($row = $st->fetch()) {
return true;
} else {
$st = $pdo->prepare('
insert into repertoire(user_id, artist_id, song_id, part_id) values(?,?,?,?)');
$res = $st->execute(array($userId, $artist->id, $song->id, $part->id));
return true;
}
}