Question

Helo那里，请帮帮我

我有一个看起来像这样的模型

Schema::create('teams', function (Blueprint $table) {
        $table->increments('id');
        $table->integer('player_id')->unsigned();
    });
    Schema::table('teams', function (Blueprint $table) {
        $table->foreign('player_id')->references('id')->on('players')->onDelete('cascade');
    });

和

Schema::create('team_members', function (Blueprint $table) {
        $table->increments('id');
        $table->integer('team_id');
        $table->integer('creator_id');
    });`

Schema::table('team_members', function (Blueprint $table) { //another migration
        $table->integer('team_id')->unsigned()->change();
        $table->integer('creator_id')->unsigned()->change();

        $table->foreign('team_id')->references('id')->on('teams')->onDelete('cascade');
        $table->foreign('creator_id')->references('id')->on('players')->onDelete('cascade');
    });

我想删除团队模型，所以我这样做了：

$team = Team::findOrFail($id);

    if(Session::get('player_id') == $team->creator_id)
    {
        $team_member = TeamMember::where('team_id', $id)->get();
        foreach($team_member as $tm)
        {
            $player = Player::find($tm->player_id);
            Notification::send($player, new \App\Notifications\DatabaseNotification(12, Session::get('username'), $id) );

        }

        @unlink($team->avatar);
        $team->delete();

        Session::flash('delete_team_success', 'Delete team success!');

        return redirect('/teams/me');
    }

删除成功，团队和team_member已从表中删除。但在我这样查询之后TeamMember::where('player_id', Session::get('player_id'))->get();它仍然会返回一个值。Click here to see the result 但当我确实喜欢这个TeamMember::get()时，结果为空Click here to see the result

为什么会这样？当我做TeamMember :: where（＆＃39; player_id＆＃39;，Session :: get（＆＃39; player_id＆＃39;）） - ＆gt; get（）;

时，我需要得到null结果

删除之后，行数据仍然存在Laravel 5.4

0 个答案: