public function customer_price_change_beta()
{
return $this->hasOne(CustomerPriceChangesBeta::class, 'customer_id', 'customer_id')
->where('product_id', $this->product_id)
;
}
public function customer_price_change_beta()
{
return $this->hasOne(CustomerPriceChangesBeta::class, 'customer_id', 'customer_id')
->where('product_id', $this->product_id)
;
}