Fix email confirm hash in templates

src/pretix/base/models/orders.py

@@ -40,6 +40,7 @@ import json
 import logging
 import operator
 import string
+import warnings
 from collections import Counter
 from datetime import datetime, time, timedelta
 from decimal import Decimal
@@ -384,6 +385,11 @@ class Order(LockModel, LoggedModel):
     def email_confirm_secret(self):
         return self.tagged_secret("email_confirm", 9)
 
+    def email_confirm_hash(self):
+        warnings.warn('Use email_confirm_secret() instead of email_confirm_hash().',
+                      DeprecationWarning)
+        return self.email_confirm_secret()
+
     def check_email_confirm_secret(self, received_secret):
         return (
             hmac.compare_digest(

src/pretix/base/templates/pretixbase/email/order_details.html

@@ -143,7 +143,7 @@
         </tr>
     </table>
     <div class="order-button">
-        <a href="{% abseventurl event "presale:event.order.open" hash=order.email_confirm_hash order=order.code secret=order.secret %}" class="button">
+        <a href="{% abseventurl event "presale:event.order.open" hash=order.email_confirm_secret order=order.code secret=order.secret %}" class="button">
             {% trans "View order details" %}
         </a>
     </div>