Question

我有两种模式：

队
游戏（两场比赛之间）

游戏模型有两个指向团队模型的外键 - team1_id＆amp; team2_id。

以下是团队模型的代码：

class Team extends Eloquent
{
    protected $table = 'team';

    protected $fillable = [
        'name',
        'color',
        'year'
    ];

    public function games()
    {
        return $this->hasMany(\App\Models\Game::class);
    }
}

游戏模型代码：

class Game extends Eloquent
{
    protected $table = 'game';

    protected $casts = [
        'team1_id' => 'int',
        'team2_id' => 'int'
    ];

    protected $fillable = [
        'team1_id',
        'team2_id',
        'location',
        'start_at'
    ];

    public function team1()
    {
        return $this->hasOne(\App\Models\Team::class, 'team1_id');
    }

    public function team2()
    {
        return $this->hasOne(\App\Models\Team::class, 'team2_id');
    }
}

我收到错误消息，说无法找到该列。

return $this->hasMany(\App\Models\Game::class, 'team1_id');

这样可行，但问题是我想根据team1_id和team2_id获取游戏。

Answer 1

您必须指定外键和用于引用该关系的本地密钥

public function localTeam()
{
    return $this->belongsTo(\App\Models\Team::class, 'id', 'team1_id');
}

public function foreignTeam()
{
    return $this->belongsTo(\App\Models\Team::class, 'id', 'team2_id');
}

Eloquent：表中指向同一个表的两个外键

1 个答案: