在 Laravel 中优化块

Question

我的 if() 条件中的这个子查询卡住了我的代码。 任何人都有优化这个的想法？

public function handle()
  {
    print "???? Searching person \n";

    DB::table('excercise_pessoa')->orderBy('id')->chunk(1000, function ($people) {
      foreach ($people as $person) {
        $excercise = Excercise::find($person->excercise_id);
        $course = $excercise->grade->course;
        $personReal = Pessoa::find($person->pessoa_id);

        if ($course->pessoas->where('id', '=', $person->pessoa_id)->count() == 0) {
          $course->pessoas()->attach($personReal);

          print "???? Associating course to people ID: $person->pessoa_id \n";
        }
      }
    });

    print "???? Finished migration! \n";
  }

Answer 1

我这样解决，

删除 if() 条件并使用：

$course->pessoas()->syncWithoutDetaching($personReal);