<?php namespace App\Models; use Illuminate\Database\Eloquent\Model; class Transaction extends Model { protected $table = "transactions"; protected $guarded = ["id"]; public static function convertAmount($amount, $fromCurrency) { $currencyConversion = file_get_contents("currency.json");; $jsonData = json_decode($currencyConversion); $value = round(($amount / ($jsonData->rates->$fromCurrency)), 0); return $value; } }