MyModel.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class MyModel extends Model
{
    protected function getImge($imageValue, $default, $version = '_large.jpg')
    {
        if ($imageValue == '' || $imageValue == null) {
            //No image
            return $default;
        } else {
            if (strpos($imageValue, 'http') !== false) {
                //Have http
                if (strpos($imageValue, '.jpg') !== false || strpos($imageValue, '.jpeg') !== false || strpos($imageValue, '.png') !== false) {
                    //Has extension
                    return $imageValue;
                } else {
                    //No extension
                    return $imageValue.$version;
                }
            } else {
                //Local image
                return ($this->imagePath.$imageValue).$version;
            }
        }
    }
}