using application/problem+json for json content-type for XMLHttpRequest

Author: samsonasik

config/error-hero-module.local.php.dist

@@ -59,7 +59,10 @@ return [
             'ajax' => [
                 'message' => <<<json
 {
-    "error": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
+    "type": "http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html",
+    "title": "Internal Server Error",
+    "status": 500,
+    "detail": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
 }
 json
             ],

spec/Fixture/autoload-for-xmlhttprequest/error-hero-module.local.php

@@ -67,7 +67,10 @@
             'ajax' => [
                 'message' => <<<json
 {
-    "error": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
+    "type": "http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html",
+    "title": "Internal Server Error",
+    "status": 500,
+    "detail": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
 }
 json
             ],

spec/IntegrationViaErrorPreviewControllerForXmlHttpRequestSpec.php

@@ -59,7 +59,10 @@
 
             expect($content)->toBe(<<<json
 {
-    "error": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
+    "type": "http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html",
+    "title": "Internal Server Error",
+    "status": 500,
+    "detail": "We have encountered a problem and we can not fulfill your request. An error report has been generated and send to the support team and someone will attend to this problem urgently. Please try again later. Thank you for your patience."
 }
 json
             );

src/Listener/Mvc.php

@@ -162,7 +162,7 @@ private function showDefaultViewWhenDisplayErrorSetttingIsDisabled()
                     isset($this->errorHeroModuleConfig['display-settings']['ajax']['message'])
                 ) {
                     $content     = $this->errorHeroModuleConfig['display-settings']['ajax']['message'];
-                    $contentType = ((new JsonParser())->lint($content) === null) ? 'application/json' : 'text/html';
+                    $contentType = ((new JsonParser())->lint($content) === null) ? 'application/problem+json' : 'text/html';
 
                     $response->getHeaders()->addHeaderLine('Content-type', $contentType);
                     $response->setContent($content);