website_membership_signup_required: fix token signup name fields

website_membership_signup_required/models/__init__.py

@@ -2,4 +2,5 @@
 
 from . import website
 from . import res_config_settings
+from . import res_partner
 from . import res_users

website_membership_signup_required/models/res_partner.py

@@ -0,0 +1,32 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class ResPartner(models.Model):
+    _inherit = "res.partner"
+
+    @api.model
+    def _signup_retrieve_info(self, token):
+        """Extend the core's token-based signup info with `firstname` and
+        `lastname` so the signup form (extended by this module to collect
+        them separately via `partner_firstname`) can be pre-filled and
+        shown readonly when the visitor follows an invitation link.
+
+        The core (`auth_signup/models/res_partner.py:_signup_retrieve_info`)
+        only returns `name`, `login` and `email`. Our signup template
+        replaced the single `name` input with `firstname` / `lastname`
+        inputs, so without this override those inputs would be empty (and
+        readonly, because `only_passwords` is True for token flows) when
+        an invited partner already has the split fields populated.
+
+        We keep `name` in the returned dict (the core's contract) and add
+        the two split fields so the controller's `setdefault` populates
+        the qcontext transparently.
+        """
+        res = super()._signup_retrieve_info(token)
+        partner = self._get_partner_from_token(token)
+        if partner:
+            res["firstname"] = partner.firstname or ""
+            res["lastname"] = partner.lastname or ""
+        return res