WebAPP/app/Models/EventParticipant.php

<?php

namespace App\Models;

use App\Enums\ParticipantStatus;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class EventParticipant extends Model
{
    protected $fillable = [
        'event_id',
        'player_id',
        'user_id',
        'status',
        'note',
        'responded_at',
    ];

    protected function casts(): array
    {
        return [
            'status' => ParticipantStatus::class,
            'responded_at' => 'datetime',
        ];
    }

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

    public function player(): BelongsTo
    {
        return $this->belongsTo(Player::class)->withTrashed();
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class)->withTrashed();
    }

    public function setByUser(): BelongsTo
    {
        return $this->belongsTo(User::class, 'set_by_user_id')->withTrashed();
    }

    public function participantName(): string
    {
        if ($this->user_id) {
            return $this->user?->name ?? __('ui.unknown');
        }

        return $this->player?->full_name ?? __('ui.unknown');
    }
}