View file File name : VariationGroupPrice.php Content :<?php namespace App; use Illuminate\Database\Eloquent\Model; class VariationGroupPrice extends Model { /** * The attributes that aren't mass assignable. * * @var array */ protected $guarded = ['id']; /** * Accessor that Calculates the price of price group of a product based on price_type of it. */ public function getCalculatedPriceAttribute() { if(isset($this->price_type) && $this->price_type == 'percentage'){ //calculate the price $variation = Variation::find($this->variation_id); $utils = new \App\Utils\Util(); $price = $utils->calc_percentage($variation->sell_price_inc_tax, $this->price_inc_tax); } else { $price = $this->price_inc_tax; } return $price; } }