尝试更新归属和枢轴中的关系

Question

您好，我正在尝试更新我的数据库中的数据，但我卡在这里我必须更新一个关系，但该关系也有一个数据透视表。

它应该搜索所有连接的“版主”，更新一个尚未连接的应该是，如果已经连接到“轨道”，那么应该会出现错误消息，但这不是现在的问题.它已经让我有机会附加其他版主，但不是获取错误消息的查询。

“Track”通过数据透视表与“Speaker”连接，在数据透视表上我有一列带有“is_moderator”。

这是我的 Track Controller 的更新功能：

    public function update(Request $request, $id)
    {
        $track = Track::all()->find($id);
        if ($request->file('track_data')) {
            $hashedName = Hash::make($request->file('track_data')->getClientOriginalName()) . "." . $request->file('track_data')->getClientOriginalExtension();
            $request->track_data->storeAs('public/tracks', $hashedName);
            $track->data = $hashedName;
        } elseif ($request->track_title) {
            $track->title = $request->track_title;
        } elseif ($request->track_description) {
            $track->description = $request->track_description;
        } elseif ($request->input('topics')) {
            foreach($request->input('topics') as $topicIds){
                $topicId = intval($topicIds);
                $topicTrackId = $track->topics()->get();
                for ($i = 0; $i < count($topicTrackId); $i++) {
                    if ($topicId == $topicTrackId[$i]->id) {
                        return redirect()->route('admin.trackEdit', $track->id)->withErrors(['msg' => 'Topic wurde bereits ausgewählt']);
                    }
                }
            }
            $track->topics()->attach($request->input('topics'));
        } elseif ($request->input('moderators')) {
            $data = [];
            foreach ($request->input('moderators') as $moderatorId) {
                $data[$moderatorId] = ['is_moderator' => 1];
            }

            $track->speakers()->attach($data);
        }
        $track->update();
        return redirect()->route('admin.trackShow');
    }

这是我现在的 EditBlade：

@extends('layouts.app')

@section('content')
    <form action="{{ route('admin.trackUpdate', $track->id) }}" method="post" enctype="multipart/form-data" id="track-form">
        @csrf
        {{ method_field('patch') }}
        @include('errors.alert')
        <label for="track_title">Track-Name</label>
        <input type="text" name="track_title" id="track_title">
        <label for="track_description">Track-Description</label>
        <input type="text" name="track_description" id="track_description">
        <label for="track_data">Track-Data</label>
        <input type="file" name="track_data" id="track_data">
        <select name="season_id" id="season_id">
            <option selected value="">Keine Auswahl</option>
            @foreach ($seasons as $season)
                <option value="{{ $season->id }}">{{ $season->name }}</option>
            @endforeach
        </select>
        <div class="container mt-5">
            <label>Topics</label>
            <select class="form-select" multiple="multiple" name="topics[]">
                @foreach($topics as $topic)
                    <option value="{{$topic->id}}">{{$topic->name}}</option>
                @endforeach
            </select>
        </div>
        <div class="container mt-5">
            <label>Moderator</label>
            <select class="form-select" multiple="multiple" name="moderators[]">
                @foreach($speakers as $speaker)
                    <option value="{{ $speaker->id }}">{{$speaker->getFullName()}}</option>
                @endforeach
            </select>
        </div>
        <div class="container mt-5">
            <label>Speakers</label>
            <select class="form-select" multiple="multiple" name="speakers[]">
                @foreach($speakers as $speaker)
                    <option value="{{$speaker->id}}">{{$speaker->getFullName()}}</option>
                @endforeach
            </select>
        </div>
        <button type="submit">submit</button>
    </form>
@endsection

赛道模型：

    class Track extends Model
{
    use HasFactory;

    protected $table = 'tracks';

    protected $primaryKey = 'id';

    protected $fillable = [
            'title',
            'description',
            'data',
            'season_id',
        ];

    public function season(): BelongsTo
    {
        return $this->belongsTo(Season::class);
    }

    public function speakers(): BelongsToMany
    {
        return $this->belongsToMany(Speaker::class, 'speakers_tracks', 'track_id', 'speaker_id')->withPivot('is_moderator');
    }

    public function topics(): BelongsToMany
    {
        return $this->belongsToMany(Topic::class, 'topics_tracks', 'track_id', 'topic_id');
    }

}

还有扬声器模型：

    class Track extends Model
{
    use HasFactory;

    protected $table = 'tracks';

    protected $primaryKey = 'id';

    protected $fillable = [
            'title',
            'description',
            'data',
            'season_id',
        ];

    public function season(): BelongsTo
    {
        return $this->belongsTo(Season::class);
    }

    public function speakers(): BelongsToMany
    {
        return $this->belongsToMany(Speaker::class, 'speakers_tracks', 'track_id', 'speaker_id')->withPivot('is_moderator');
    }

    public function topics(): BelongsToMany
    {
        return $this->belongsToMany(Topic::class, 'topics_tracks', 'track_id', 'topic_id');
    }

}

如果你能帮助我，我会很高兴我已经花了两个小时的头疼。 提前谢谢！

Answer 1

您必须更改附加扬声器，来自：

 foreach ($request->input('moderators') as $moderatorId) {
                $data[$moderatorId] = ['is_moderator' => 1];
            }
            $track->speakers()->attach($data);

到：

   foreach ($request->input('moderators') as $moderatorId) {
            $track->speakers()->attach($moderatorId, ['is_moderator' => 1] );
            }