[IMP] website_event_crm: set lang on event lead generation

Purpose: set `lang_id` and `visitor_ids` fields on leads generated by a lead
generation rule.

We check that there are several languages used on the website to make sure the
visitor's language is relevant. Then we propagate the visitor's language when
creating leads.

Task-3293050

closes odoo/odoo#124303

Signed-off-by: Jérémy Hennecart (jeh) <jeh@odoo.com>

addons/website_event_crm/models/event_registration.py

@@ -24,3 +24,12 @@ class EventRegistration(models.Model):
         res = super(EventRegistration, self)._get_lead_description_fields()
         res.append('registration_answer_ids')
         return res
+
+    def _get_lead_values(self, rule):
+        """Update lead values from Lead Generation rules to include the visitor and their language"""
+        lead_values = super()._get_lead_values(rule)
+        lead_values.update({
+            'visitor_ids': self.visitor_id,
+            'lang_id': self.visitor_id.lang_id.id,
+        })
+        return lead_values

addons/website_event_crm/tests/__init__.py

@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import test_visitor_propagation

addons/website_event_crm/tests/test_visitor_propagation.py

@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo.tests.common import users
+from odoo.addons.event_crm.tests.common import TestEventCrmCommon
+
+class TestWebsiteEventCrmFlow(TestEventCrmCommon):
+
+    @users('user_eventregistrationdesk')
+    def test_visitor_language_propagation(self):
+        """
+        This test makes sure that visitor and its language are propagated to the lead when a lead is
+        created through a lead generation rule.
+
+        `_run_on_registration`, which creates the lead, is called at `event.registration` creation
+        and does not need to be called manually.
+        """
+        test_lang_website = self.env['website'].sudo().create({
+            'name': 'test lang website',
+            'user_id': self.env.ref('base.user_admin').id,
+            'language_ids': [self.env.ref('base.lang_en').id, self.env.ref('base.lang_fr').id]
+        })
+        test_lang_visitor = self.env['website.visitor'].sudo().create({
+            'name': 'test visitor language',
+            'lang_id': self.env.ref('base.lang_en').id,
+            'access_token': 'f9d2ffa0427d4e4b1d740cf5eb3cdc20',
+            'website_id': test_lang_website.id,
+        })
+        # 3 leads created w/ Lead Generation rules in TestEventCrmCommon: 1 per attendee and 1 per order
+        test_lang_registration1, test_lang_registration2 = self.env['event.registration'].create([
+            {
+                'event_id': self.event_0.id,
+                'visitor_id': test_lang_visitor.id,
+                'email': 'test@test.example.com',
+            },
+            {
+                'event_id': self.event_0.id,
+                'visitor_id': test_lang_visitor.id,
+                'email': 'test2@test.example.com',
+            },
+        ])
+        leads = test_lang_registration1.lead_ids | test_lang_registration2.lead_ids
+        self.assertEqual(leads.visitor_ids, test_lang_visitor)
+        self.assertEqual(leads.lang_id, test_lang_visitor.lang_id)