'decimal:4', 'balance_after_ghs' => 'decimal:4', 'metadata' => 'array', ]; public function wallet(): BelongsTo { return $this->belongsTo(QrWallet::class, 'qr_wallet_id'); } public function user(): BelongsTo { return $this->belongsTo(User::class); } public function qrCode(): BelongsTo { return $this->belongsTo(QrCode::class); } }