Set ui_lang in Sailthru when creating and updating users

lms/djangoapps/email_marketing/signals.py

@@ -13,6 +13,7 @@ from celery.exceptions import TimeoutError
 
 from email_marketing.models import EmailMarketingConfiguration
 from lms.djangoapps.email_marketing.tasks import update_user, update_user_email, get_email_cookies_via_sailthru
+from openedx.core.djangoapps.lang_pref import LANGUAGE_KEY
 from student.cookies import CREATE_LOGON_COOKIE
 from student.views import REGISTER_USER
 from util.model_utils import USER_FIELD_CHANGED
@@ -22,7 +23,7 @@ log = logging.getLogger(__name__)
 # list of changed fields to pass to Sailthru
 CHANGED_FIELDNAMES = ['username', 'is_active', 'name', 'gender', 'education',
                       'age', 'level_of_education', 'year_of_birth',
-                      'country']
+                      'country', LANGUAGE_KEY]
 
 
 @receiver(CREATE_LOGON_COOKIE)
@@ -134,8 +135,8 @@ def email_marketing_user_field_changed(sender, user=None, table=None, setting=No
     if user.is_anonymous():
         return
 
-    # ignore anything but User or Profile table
-    if table != 'auth_user' and table != 'auth_userprofile':
+    # ignore anything but User, Profile or UserPreference tables
+    if table not in {'auth_user', 'auth_userprofile', 'user_api_userpreference'}:
         return
 
     # ignore anything not in list of fields to handle
@@ -167,6 +168,9 @@ def _create_sailthru_user_vars(user, profile):
                      'activated': int(user.is_active),
                      'joined_date': user.date_joined.strftime("%Y-%m-%d")}
 
+    # Set the ui_lang to the User's prefered language, if specified. Otherwise use the application's default language.
+    sailthru_vars['ui_lang'] = user.preferences.model.get_value(user, LANGUAGE_KEY, default=settings.LANGUAGE_CODE)
+
     if profile:
         sailthru_vars['fullname'] = profile.name
         sailthru_vars['gender'] = profile.gender

lms/djangoapps/email_marketing/tests/test_signals.py

@@ -3,6 +3,7 @@ import datetime
 import logging
 
 import ddt
+from django.conf import settings
 from django.contrib.auth.models import AnonymousUser
 from django.contrib.sites.models import Site
 from django.test import TestCase
@@ -28,6 +29,7 @@ from email_marketing.tasks import (
     update_user_email,
     get_email_cookies_via_sailthru
 )
+from openedx.core.djangoapps.lang_pref import LANGUAGE_KEY
 from student.tests.factories import UserFactory, UserProfileFactory
 from util.json_request import JsonResponse
 
@@ -450,11 +452,27 @@ class EmailMarketingTests(TestCase):
         email_marketing_register_user(None, user=self.user, profile=self.profile)
         self.assertTrue(mock_update_user.called)
 
+    @patch('lms.djangoapps.email_marketing.tasks.update_user.delay')
+    def test_register_user_language_preference(self, mock_update_user):
+        """
+        make sure register user call invokes update_user and includes language preference
+        """
+        # If the user hasn't set an explicit language preference, we should send the application's default.
+        self.assertIsNone(self.user.preferences.model.get_value(self.user, LANGUAGE_KEY))
+        email_marketing_register_user(None, user=self.user, profile=self.profile)
+        self.assertEqual(mock_update_user.call_args[0][0]['ui_lang'], settings.LANGUAGE_CODE)
+
+        # If the user has set an explicit language preference, we should send it.
+        self.user.preferences.create(key=LANGUAGE_KEY, value='es-419')
+        email_marketing_register_user(None, user=self.user, profile=self.profile)
+        self.assertEqual(mock_update_user.call_args[0][0]['ui_lang'], 'es-419')
+
     @patch('email_marketing.signals.crum.get_current_request')
     @patch('lms.djangoapps.email_marketing.tasks.update_user.delay')
     @ddt.data(('auth_userprofile', 'gender', 'f', True),
               ('auth_user', 'is_active', 1, True),
-              ('auth_userprofile', 'shoe_size', 1, False))
+              ('auth_userprofile', 'shoe_size', 1, False),
+              ('user_api_userpreference', 'pref-lang', 'en', True))
     @ddt.unpack
     def test_modify_field(self, table, setting, value, result, mock_update_user, mock_get_current_request):
         """
@@ -464,6 +482,25 @@ class EmailMarketingTests(TestCase):
         email_marketing_user_field_changed(None, self.user, table=table, setting=setting, new_value=value)
         self.assertEqual(mock_update_user.called, result)
 
+    @patch('lms.djangoapps.email_marketing.tasks.update_user.delay')
+    def test_modify_language_preference(self, mock_update_user):
+        """
+        Test that update_user is called with new language preference
+        """
+        # If the user hasn't set an explicit language preference, we should send the application's default.
+        self.assertIsNone(self.user.preferences.model.get_value(self.user, LANGUAGE_KEY))
+        email_marketing_user_field_changed(
+            None, self.user, table='user_api_userpreference', setting=LANGUAGE_KEY, new_value=None
+        )
+        self.assertEqual(mock_update_user.call_args[0][0]['ui_lang'], settings.LANGUAGE_CODE)
+
+        # If the user has set an explicit language preference, we should send it.
+        self.user.preferences.create(key=LANGUAGE_KEY, value='fr')
+        email_marketing_user_field_changed(
+            None, self.user, table='user_api_userpreference', setting=LANGUAGE_KEY, new_value='fr'
+        )
+        self.assertEqual(mock_update_user.call_args[0][0]['ui_lang'], 'fr')
+
     @patch('lms.djangoapps.email_marketing.tasks.update_user_email.delay')
     def test_modify_email(self, mock_update_user):
         """

openedx/core/djangoapps/lang_pref/tests/test_middleware.py

@@ -232,7 +232,11 @@ class TestUserPreferenceMiddleware(TestCase):
 
         self.assertEqual(get_user_preference(self.user, LANGUAGE_KEY), None)
 
-        with self.assertNumQueries(5):
+        # The 'email_marketing' app is installed in the LMS env but not the CMS env. It listens for the
+        # USER_FIELD_CHANGED signal (utils.model_utils) and does a query to check the EmailMarketingConfiguration
+        # table to see if Sailthru integreation is enabled.
+        expected_queries = 6 if 'email_marketing' in settings.INSTALLED_APPS else 5
+        with self.assertNumQueries(expected_queries):
             self.middleware.process_request(self.request)
 
         self.assertEqual(get_user_preference(self.user, LANGUAGE_KEY), 'es')
@@ -258,7 +262,11 @@ class TestUserPreferenceMiddleware(TestCase):
 
         self.request.COOKIES[settings.LANGUAGE_COOKIE] = 'en'
 
-        with self.assertNumQueries(5):
+        # The 'email_marketing' app is installed in the LMS env but not the CMS env. It listens for the
+        # USER_FIELD_CHANGED signal (utils.model_utils) and does a query to check the EmailMarketingConfiguration
+        # table to see if Sailthru integreation is enabled.
+        expected_queries = 6 if 'email_marketing' in settings.INSTALLED_APPS else 5
+        with self.assertNumQueries(expected_queries):
             self.middleware.process_request(self.request)
 
         self.assertEqual(get_user_preference(self.user, LANGUAGE_KEY), 'en')