Use a custom Matrix username

apps/registration/auth.py

@@ -0,0 +1,14 @@
+from cas_server.auth import DjangoAuthUser
+from django.utils.text import slugify
+
+
+class CustomAuthUser(DjangoAuthUser):
+    """
+    Override Django Auth User model to define a custom Matrix username.
+    """
+
+    def attributs(self):
+        d = super().attributs()
+        if self.user:
+            d["matrix_username"] = slugify(str(self.user.registration))
+        return d

apps/registration/fixtures/initial.json

@@ -0,0 +1,17 @@
+[
+{
+    "model": "cas_server.servicepattern",
+    "pk": 1,
+    "fields": {
+        "pos": 100,
+        "name": "Plateforme des Correspondances",
+        "pattern": "^https://correspondances-maths.fr:8448/.*$",
+        "user_field": "matrix_username",
+        "restrict_users": false,
+        "proxy": true,
+        "proxy_callback": true,
+        "single_log_out": true,
+        "single_log_out_callback": ""
+    }
+}
+]