From b16dca435aeaa0e2dc783deee537f0e7f3c53649 Mon Sep 17 00:00:00 2001
From: Andrew Nicols <andrew@nicols.co.uk>
Date: Wed, 19 Jul 2017 09:30:03 +0800
Subject: [PATCH] MDL-59388 calendar: Add data-time to calendar navigation
 links

---
 calendar/lib.php | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/calendar/lib.php b/calendar/lib.php
index 77df74eaab7..55a12be7192 100644
--- a/calendar/lib.php
+++ b/calendar/lib.php
@@ -2173,7 +2173,11 @@ function calendar_get_link_previous($text, $linkbase, $d, $m, $y, $accesshide =
         return $text;
     }
 
-    return link_arrow_left($text, (string)$href, $accesshide, 'previous');
+    $attrs = [
+        'data-time' => calendar_get_timestamp($d, $m, $y, $time),
+    ];
+
+    return link_arrow_left($text, $href->out(false), $accesshide, 'previous', $attrs);
 }
 
 /**
@@ -2196,7 +2200,11 @@ function calendar_get_link_next($text, $linkbase, $d, $m, $y, $accesshide = fals
         return $text;
     }
 
-    return link_arrow_right($text, (string)$href, $accesshide, 'next');
+    $attrs = [
+        'data-time' => calendar_get_timestamp($d, $m, $y, $time),
+    ];
+
+    return link_arrow_right($text, $href->out(false), $accesshide, 'next', $attrs);
 }
 
 /**