mandant-crm/backend/app/Modules/History/Models/HistoryEntry.php

<?php

namespace App\Modules\History\Models;

use App\Models\User;
use App\Modules\Client\Models\Client;
use Database\Factories\HistoryEntryFactory;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\SoftDeletes;

class HistoryEntry extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        'client_id',
        'type',
        'history_entry_type_id',
        'occurred_at',
        'body',
        'custom_field_definition_id',
        'author_id',
        'updated_by',
    ];

    protected $casts = [
        'type' => HistoryEntryType::class,
        'occurred_at' => 'datetime',
    ];

    public function isFieldChange(): bool
    {
        return $this->type === HistoryEntryType::FieldChange;
    }

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

    public function entryType(): BelongsTo
    {
        return $this->belongsTo(HistoryType::class, 'history_entry_type_id');
    }

    public function author(): BelongsTo
    {
        return $this->belongsTo(User::class, 'author_id');
    }

    public function updatedBy(): BelongsTo
    {
        return $this->belongsTo(User::class, 'updated_by');
    }

    protected static function newFactory(): HistoryEntryFactory
    {
        return HistoryEntryFactory::new();
    }
}