Cetaklabel/Entities/DocumentDetail.php

<?php

    namespace Modules\Cetaklabel\Entities;

    class DocumentDetail extends BaseModel
    {
        protected $fillable = [
            'document_id',
            'document_type_id',
            'nama_nasabah',
            'no_rekening',
            'no_cif',
            'group',
            'group',
            'tanggal_upload',
            'tanggal_dokumen',
            'nomor_dokumen',
            'perihal',
            'kode_cabang',
            'jumlah_halaman',
            'custom_field_1',
            'custom_field_2',
            'custom_field_3',
            'custom_field_4',
            'file'
        ];

        public function document()
        {
            return $this->belongsTo(Document::class);
        }

        public function document_type()
        {
            return $this->belongsTo(DocumentType::class);
        }
    }