mobilebackendgateway/app/Traits/ConsumesExternalService.php

<?php

namespace App\Traits;
use GuzzleHttp\Client;

trait ConsumesExternalService
{
    /**
     *  Envoie une requete a un service
     * @param $method
     * @param $requestUrl
     * @param array $body
     * @param array $formParams
     * @param array $headers
     * @return string
     */
    public function perfomRequest($method, $requestUrl, $body = [], $formParams = [], $headers = [])
    {
        $client =  new Client([
            'base_uri' => $this->baseUri,
        ]);

        if(isset($this->key)){
            $headers['Authorization'] = $this->key;
         }

        $response = $client->request($method , $requestUrl , ['json'=> $body , 'form_params' => $formParams , 'headers' => $headers] );

        return $response->getBody()->getContents();
    }
}