Provide logo URL from the backend

lms/djangoapps/branding/api.py

@@ -13,7 +13,6 @@ the marketing site and blog).
 
 """
 
-
 import logging
 
 import six
@@ -673,3 +672,11 @@ def get_home_url():
     Return Dashboard page url
     """
     return reverse('dashboard')
+
+
+def get_logo_url_for_email():
+    """
+    Returns the url for the branded logo image for embedding in email templates.
+    """
+    default_logo_url = getattr(settings, 'DEFAULT_EMAIL_LOGO_URL')
+    return getattr(settings, 'LOGO_URL_PNG') or default_logo_url

lms/djangoapps/bulk_email/tasks.py

@@ -41,6 +41,7 @@ from edx_django_utils.monitoring import set_code_owner_attribute
 from markupsafe import escape
 from six import text_type
 
+from lms.djangoapps.branding.api import get_logo_url_for_email
 from lms.djangoapps.bulk_email.models import CourseEmail, Optout
 from lms.djangoapps.bulk_email.api import get_unsubscribed_link
 from lms.djangoapps.courseware.courses import get_course
@@ -123,6 +124,7 @@ def _get_course_email_context(course):
         'course_end_date': course_end_date,
         'account_settings_url': '{}{}'.format(lms_root_url, reverse('account_settings')),
         'email_settings_url': '{}{}'.format(lms_root_url, reverse('dashboard')),
+        'logo_url': get_logo_url_for_email(),
         'platform_name': configuration_helpers.get_value('PLATFORM_NAME', settings.PLATFORM_NAME),
         'year': timezone.now().year,
     }
@@ -294,7 +296,6 @@ def send_course_email(entry_id, email_id, to_list, global_email_context, subtask
     send_exception = None
     new_subtask_status = None
     try:
-        course_title = global_email_context['course_title']
         start_time = time.time()
         new_subtask_status, send_exception = _send_course_email(
             entry_id,

openedx/core/djangoapps/ace_common/template_context.py

@@ -6,6 +6,7 @@ Context dictionary for templates that use the ace_common base template.
 from django.conf import settings
 from django.urls import NoReverseMatch, reverse
 
+from lms.djangoapps.branding.api import get_logo_url_for_email
 from common.djangoapps.edxmako.shortcuts import marketing_link
 from openedx.core.djangoapps.theming.helpers import get_config_value_from_site_or_settings
 
@@ -16,7 +17,6 @@ def get_base_template_context(site):
     """
     # When on LMS and a dashboard is available, use that as the dashboard url.
     # Otherwise, use the home url instead.
-    default_logo_url = getattr(settings, 'DEFAULT_EMAIL_LOGO_URL')
     try:
         dashboard_url = reverse('dashboard')
     except NoReverseMatch:
@@ -38,5 +38,5 @@ def get_base_template_context(site):
             'CONTACT_MAILING_ADDRESS', site=site, site_config_name='contact_mailing_address'),
         'social_media_urls': get_config_value_from_site_or_settings('SOCIAL_MEDIA_FOOTER_URLS', site=site),
         'mobile_store_urls': get_config_value_from_site_or_settings('MOBILE_STORE_URLS', site=site),
-        'logo_url': getattr(settings, 'LOGO_URL_PNG', default_logo_url),
+        'logo_url': get_logo_url_for_email(),
     }