Set proper context when sending emails (#402)

CHANGES.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 Note - All hash comments refer to the issue number. Eg. #169 refers to https://github.com/mdjnelson/moodle-mod_customcert/issues/169.
 
-## [3.9.1] - 2021-XX-YY
+## [3.9.1] - 2021-06-13
 
 ### Added
 - Usage of github actions (#407).
@@ -15,6 +15,7 @@ Note - All hash comments refer to the issue number. Eg. #169 refers to https://g
 - Managers are now able to download their students' certificates (#412).
 - Users being able to view the certificate before the required time set (#403).
 - Fixed the issue with displaying PDF when debugging is ON (#420).
+- Using incorrect context when sending emails (#402).
 
 ## [3.8.5] - 2020-11-26
 

classes/task/email_certificate_task.php

@@ -84,6 +84,9 @@ class email_certificate_task extends \core\task\scheduled_task {
             // Get the context.
             $context = \context::instance_by_id($customcert->contextid);
 
+            // Set the $PAGE context - this ensure settings, such as language, are kept and don't default to the site settings.
+            $PAGE->set_context($context);
+
             // Get the person we are going to send this email on behalf of.
             $userfrom = \core_user::get_noreply_user();