'datetime', 'quantity' => 'integer', 'amount' => 'decimal:4', 'original_status' => 'string', ]; public function batch(): BelongsTo { return $this->belongsTo(SalesImportBatch::class, 'batch_id'); } public function product(): BelongsTo { return $this->belongsTo(Product::class, 'product_id'); } public function warehouse(): BelongsTo { return $this->belongsTo(Warehouse::class, 'machine_id', 'code'); } }