[concrete5] [V8] Fix: IE tries to download json file when you hit save button of content block

README.md

How to fix: IE tries to download json file when you hit save button of content block

concrete5 uses Synfony Component to create http response. The Content-Type is application/json when it returns json response. Unfortunately, Internet Explorer can not understand application/json content type correctly. This fix to override Content Type header to 'text/plain' only for IE browser.

File list

• application/bootstrap/autoload.php
• application/config/app.php
• application/src/Http/HttpServiceProvider.php
• application/src/Http/ResponseFactory.php

References

• Override (almost) any core file in 5.7
• Creating Custom Code in the Application Directory

app.php

<?php

return [
    'providers' => [
        'core_http' => \Application\Http\HttpServiceProvider::class
    ]
];

autoload.php

<?php

defined('C5_EXECUTE') or die('Access Denied.');

/*
 * ----------------------------------------------------------------------------
 * Load all composer autoload items.
 * ----------------------------------------------------------------------------
 */

// If the checker class is already provided, likely we have been included in a separate composer project
if (!class_exists(\DoctrineXml\Checker::class)) {
    // Otherwise, lets try to load composer ourselves
    if (!@include(DIR_BASE_CORE . '/' . DIRNAME_VENDOR . '/autoload.php')) {
        echo 'Third party libraries not installed. Make sure that composer has required libraries in the concrete/ directory.';
        die(1);
    }
}

// Modified from here
$classLoader = new \Symfony\Component\ClassLoader\Psr4ClassLoader();
$classLoader->addPrefix('Application\\Http', DIR_APPLICATION . '/' . DIRNAME_CLASSES . '/Http');
$classLoader->register();

HttpServiceProvider.php

<?php
namespace Application\Http;

use Concrete\Core\Http\ResponseFactoryInterface;

class HttpServiceProvider extends \Concrete\Core\Http\HttpServiceProvider
{
    public function register()
    {
        parent::register();

        // Override Response Factory
        $this->app->bind(ResponseFactoryInterface::class, ResponseFactory::class);
    }
}

ResponseFactory.php

<?php
namespace Application\Http;

use Concrete\Core\Http\Request;
use Concrete\Core\Http\Response;

class ResponseFactory extends \Concrete\Core\Http\ResponseFactory
{
    /**
     * @inheritDoc
     */
    public function json($data, $code = Response::HTTP_OK, array $headers = [])
    {
        $response = parent::json($data, $code, $headers);
        $request = Request::getInstance();
        if (strpos($request->headers->get('User-Agent'), 'MSIE') !== false) {
            $response->headers->set('Content-Type', 'text/plain');
        }

        return $response;
    }
}