多对多的雄辩关系

Question

I am trying to create a many to many relationship using Laravel 4.1 and Eloquent model. I have 3 tables - songs, artists and song_artist:

---- songs 
        -- id
        -- title
        -- genre

---- artists
        - id
        - name

---- song_artist
        - id
        - song_id
        - artist_id

Since each song can have multiple artists and each artist can have multiple songs, I assumed I would need to use the morphToMany() method instead of the hasMany() or hasManyThrough() methods.

How would I set up the relation so that I could access the artists related to a song by $song->artists(), as well as access the songs related to an aritst by using $artist->songs()?

I've already looked into other questions on SO such as this one, this one and this one.

Any help would be much appreciated.

Answer 1

Rename song_artist to artist_song, then use belongsToMany.

If you don't want to rename your table, set it manually:

// In Artist
return $this->belongsToMany('Song', 'song_artist');

// In Song
return $this->belongsToMany('Artist', 'song_artist');