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src/Request/Traits/HasInterface.php

<?php

namespace Nip\Http\Request\Traits;

/**
 * Trait HasInterface
 * @package Nip\Http\Request\Traits
 */
trait HasInterface
{
    /**
     * Get the input source for the request.
     *
     * @return \Symfony\Component\HttpFoundation\ParameterBag
     */
    protected function getInputSource()
    {
        if ($this->isJson()) {

It seems like isJson() must be provided by classes using this trait. How about adding it as abstract method to this trait?

            return $this->json();

It seems like json() must be provided by classes using this trait. How about adding it as abstract method to this trait?

        }

        return in_array($this->getRealMethod(), ['GET', 'HEAD']) ? $this->query : $this->request;

It seems like getRealMethod() must be provided by classes using this trait. How about adding it as abstract method to this trait?

    }

    /**
     * @return bool
     */
    public function isCLI()
    {
        if (defined('STDIN')) {
            return true;
        }

        if (php_sapi_name() === 'cli') {
            return true;
        }

        if (array_key_exists('SHELL', $_ENV)) {
            return true;
        }

        if (empty($_SERVER['REMOTE_ADDR']) and !isset($_SERVER['HTTP_USER_AGENT']) and count($_SERVER['argv']) > 0) {
            return true;
        }

        if (!array_key_exists('REQUEST_METHOD', $_SERVER)) {
            return true;
        }

        return false;
    }

    /**
     * Determine if the request is the result of an AJAX call.
     *
     * @return bool
     */
    public function ajax()
    {
        return $this->isXmlHttpRequest();

It seems like isXmlHttpRequest() must be provided by classes using this trait. How about adding it as abstract method to this trait?

    }

    /**
     * Determine if the request is the result of an PJAX call.
     *
     * @return bool
     */
    public function pjax()
    {
        return $this->headers->get('X-PJAX') == true;
    }
}