From cb5943094da240e0dac413014d0361ca2ea83147 Mon Sep 17 00:00:00 2001
From: Johannes Burk <burk@htw-berlin.de>
Date: Wed, 29 Jun 2022 10:38:36 +0200
Subject: [PATCH] MDL-75083 login: prevent double submission

Apply core_form/submit JavaScript code to prevent double submission of login form and guest login button.
Add ID to guest login button to make it addressable.
---
 lib/templates/loginform.mustache | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/templates/loginform.mustache b/lib/templates/loginform.mustache
index d563f5a43ad..7b8caddcb52 100644
--- a/lib/templates/loginform.mustache
+++ b/lib/templates/loginform.mustache
@@ -180,7 +180,7 @@
             <input type="hidden" name="logintoken" value="{{logintoken}}">
             <input type="hidden" name="username" value="guest" />
             <input type="hidden" name="password" value="guest" />
-            <button class="btn btn-secondary" type="submit">{{#str}}loginguest{{/str}}</button>
+            <button class="btn btn-secondary" type="submit" id="loginguestbtn">{{#str}}loginguest{{/str}}</button>
         </form>
     {{/canloginasguest}}
     <div class="login-divider"></div>
@@ -213,4 +213,8 @@
     {{#error}}
         document.getElementById('loginerrormessage').focus();
     {{/error}}
+    require(['core_form/submit'], function(Submit) {
+        Submit.init("loginbtn");
+        Submit.init("loginguestbtn");
+    });
 {{/js}}