From c634b6177e011be129f6c740b651d29307bc4c7e Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Tue, 10 Jul 2018 09:29:32 +0200
Subject: lib/format.php: make error on unkown type more verbose

---
 lib/format.php | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/format.php b/lib/format.php
index 8731eb0..6c18648 100644
--- a/lib/format.php
+++ b/lib/format.php
@@ -28,6 +28,26 @@ function export_as_requested($content) {
       )
     );
   } else {
-    throw_http_error(406,"Not Acceptable","Unknown output format.");
+    throw_http_error(
+      406,
+      "Not Acceptable",
+      implode(
+        "<br>\n",
+        array_merge(
+          array(
+            "Unknown output format.",
+            "Accepted:"
+          ),
+          array_map(
+            function($type){
+              return "<a href=\"?" . $type . "\">" . $type . "</a>";
+            },
+            array_keys(
+              $content
+            )
+          )
+        )
+      )
+    );
   }
 }
-- 
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