我嘗試在 Laravel 中以多對(duì)多關(guān)系附加 2 個(gè)對(duì)象。所以我有用戶和團(tuán)隊(duì)。當(dāng)我嘗試時(shí)，$user->teams()->attach($team->id, ['instrument_user_id' => $randomInstrument, 'is_leader' => $is_leader]);我得到了下一個(gè)錯(cuò)誤：SQLSTATE[23000]: Integrity constraint violation: 19 NOT NULL constraint failed: team_members.user_id (SQL: insert into "team_members" ("team_id", "instrument_user_id", "is_leader") values (73, 1, 0))當(dāng)我嘗試時(shí)，$team->members()->attach($user->id, ['instrument_user_id' => $randomInstrument, 'is_leader' => $is_leader]);我得到了下一個(gè)錯(cuò)誤：SQLSTATE[23000]: Integrity constraint violation: 19 NOT NULL constraint failed: team_members.team_id (SQL: insert into "team_members" ("user_id", "instrument_user_id", "is_leader") values (1, 1, 0))那么我必須在哪里添加我要附加的項(xiàng)目的 id，或者我做錯(cuò)了什么？用戶型號(hào)：public function teams(){        return $this->belongsToMany('App\Team', 'team_members', 'team_id')                    ->as('details')                    ->withPivot('instrument_user_id', 'is_leader')                    ->using('App\TeamMember');    }團(tuán)隊(duì)模型：public function members()    {        return $this->belongsToMany('\App\User', 'team_members', 'user_id')                    ->as('details')                    ->withPivot('instrument_user_id','is_leader')                    ->using('App\TeamMember');    }