Kami sedang membangunkan ciri dalam codotto.com di mana pengguna boleh meninggalkan komen pada pertemuan IT. Setiap komen boleh ada jawapan. Kami hanya membenarkan satu tahap jawapan yang mendalam, contohnya:

- Comment 1
  - Answer to comment 1
  - Answer to comment 1
- Comment 2
  - Answer to comment 2
  - Answer to comment 2

Saya mempunyai struktur pangkalan data berikut:

// meetup_messages
- id
- user_id
- meetup_id
- meetup_message_id (nullable) -> comments that do not answer will have this set to nullable

Dalam model saya, saya akan answers 定义为 HasMany hubungan:

class MeetupMessage extends Model
{
  // ...

  public function answers(): HasMany
  {
      return $this->hasMany(self::class, 'meetup_message_id');
  }
}

Kemudian pada pengawal saya, saya mendapat semua komen tanpa jawapan:

public function index(
        IndexMeetupMessageRequest $request,
        Meetup $meetup,
        MeetupMessageService $meetupMessageService
    ): MeetupMessageCollection
    {
        $meetupMessages = MeetupMessage::with([
            'user',
            // 'answers' => function ($query) {
            //   $query->limit(3);
            // }
            'answers'
        ])
            ->whereNull('meetup_message_id')
            ->whereMeetupId($meetup->id)
            ->paginate();

        return new MeetupMessageCollection($meetupMessages);
    }

Kemudian pada MeetupMessageCollection saya:

class MeetupMessageCollection extends ResourceCollection
{
    public function toArray($request)
    {
        return parent::toArray($request);
    }
}

Kemudian pada MeetupMessageResource saya:

<?php

namespace AppHttpResources;

use IlluminateHttpResourcesJsonJsonResource;
use IlluminateSupportCollection;

class MeetupMessageResource extends JsonResource
{
    public function toArray($request)
    {
        return collect([
            // 'answers' => new MeetupMessageCollection($this->whenLoaded('answers')),
        ])
            ->when(
                is_null($this->meetup_message_id) && $this->relationLoaded('answers'),
                function (Collection $collection) {
                    $collection->put('answers', MeetupMessageCollection::collection($this->answers));
                }
            );
    }
}

Tetapi saya mendapat ralat berikut: Panggil ke kaedah yang tidak ditentukan AppModelsMeetupMeetupMessage::mapInto(). Bagaimanakah saya masih boleh menggunakan 调用未定义的方法 AppModelsMeetupMeetupMessage::mapInto()。我如何通过将 answers 传递给它来仍然使用 MeetupMessageCollection dengan menghantar jawapan kepadanya?