[16.0][FIX] auth_signup_verify_email: ensure right values are taken

This commit enables the extension of the values from other modules
Fix #767

auth_signup_verify_email/__init__.py

@@ -2,3 +2,4 @@
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
 from . import controllers
+from . import models

auth_signup_verify_email/controllers/main.py

@@ -44,11 +44,7 @@ def passwordless_signup(self):
             values["email"] = values.get("login")
 
         # remove values that could raise "Invalid field '*' on model 'res.users'"
-        values.pop("redirect", "")
-        values.pop("token", "")
-
-        # Remove password
-        values["password"] = ""
+        values = request.env["res.users"]._auth_signup_prepare_values(values)
         sudo_users = request.env["res.users"].with_context(create_user=True).sudo()
 
         try:

auth_signup_verify_email/models/__init__.py

@@ -0,0 +1 @@
+from . import res_users

auth_signup_verify_email/models/res_users.py

@@ -0,0 +1,20 @@
+# Copyright 2025 - Bigorna
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, models
+
+
+class ResUsers(models.Model):
+    _inherit = "res.users"
+
+    @api.model
+    def _auth_signup_required_fields(self):
+        return ["name", "login", "email"]
+
+    @api.model
+    def _auth_signup_prepare_values(self, values):
+        return {
+            field: values.get(field)
+            for field in self._auth_signup_required_fields()
+            if field in values
+        }