Enable DEFAULT_MODE to be customized in config

- Keeps platform set default of "Audit" to be backwards compatible and not break stuff
- get COURSE_MODE_DEFAULTS from config if set

cms/envs/common.py

@@ -59,7 +59,7 @@ from lms.envs.common import (
     # The following setting is included as it is used to check whether to
     # display credit eligibility table on the CMS or not.
     ENABLE_CREDIT_ELIGIBILITY, YOUTUBE_API_KEY,
-    DEFAULT_COURSE_ABOUT_IMAGE_URL,
+    COURSE_MODE_DEFAULTS, DEFAULT_COURSE_ABOUT_IMAGE_URL,
 
     # Django REST framework configuration
     REST_FRAMEWORK,

common/djangoapps/course_modes/models.py

@@ -6,6 +6,7 @@ from datetime import datetime, timedelta
 
 import pytz
 from config_models.models import ConfigurationModel
+from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.db import models
 from django.db.models import Q
@@ -119,8 +120,18 @@ class CourseMode(models.Model):
     NO_ID_PROFESSIONAL_MODE = "no-id-professional"
     CREDIT_MODE = "credit"
 
-    DEFAULT_MODE = Mode(AUDIT, _('Audit'), 0, '', 'usd', None, None, None, None)
-    DEFAULT_MODE_SLUG = AUDIT
+    DEFAULT_MODE = Mode(
+        settings.COURSE_MODE_DEFAULTS['slug'],
+        settings.COURSE_MODE_DEFAULTS['name'],
+        settings.COURSE_MODE_DEFAULTS['min_price'],
+        settings.COURSE_MODE_DEFAULTS['suggested_prices'],
+        settings.COURSE_MODE_DEFAULTS['currency'],
+        settings.COURSE_MODE_DEFAULTS['expiration_datetime'],
+        settings.COURSE_MODE_DEFAULTS['description'],
+        settings.COURSE_MODE_DEFAULTS['sku'],
+        settings.COURSE_MODE_DEFAULTS['bulk_sku'],
+    )
+    DEFAULT_MODE_SLUG = settings.COURSE_MODE_DEFAULTS['slug']
 
     # Modes utilized for audit/free enrollments
     AUDIT_MODES = [AUDIT, HONOR]

lms/envs/aws.py

@@ -137,6 +137,9 @@ if STATIC_URL_BASE:
 # DEFAULT_COURSE_ABOUT_IMAGE_URL specifies the default image to show for courses that don't provide one
 DEFAULT_COURSE_ABOUT_IMAGE_URL = ENV_TOKENS.get('DEFAULT_COURSE_ABOUT_IMAGE_URL', DEFAULT_COURSE_ABOUT_IMAGE_URL)
 
+# COURSE_MODE_DEFAULTS specifies the course mode to use for courses that do not set one
+COURSE_MODE_DEFAULTS = ENV_TOKENS.get('COURSE_MODE_DEFAULTS', COURSE_MODE_DEFAULTS)
+
 # MEDIA_ROOT specifies the directory where user-uploaded files are stored.
 MEDIA_ROOT = ENV_TOKENS.get('MEDIA_ROOT', MEDIA_ROOT)
 MEDIA_URL = ENV_TOKENS.get('MEDIA_URL', MEDIA_URL)

lms/envs/common.py

@@ -613,6 +613,18 @@ COURSE_SETTINGS = {
     }
 }
 
+COURSE_MODE_DEFAULTS = {
+    'bulk_sku': None,
+    'currency': 'usd',
+    'description': None,
+    'expiration_datetime': None,
+    'min_price': 0,
+    'name': _('Audit'),
+    'sku': None,
+    'slug': 'audit',
+    'suggested_prices': '',
+}
+
 # IP addresses that are allowed to reload the course, etc.
 # TODO (vshnayder): Will probably need to change as we get real access control in.
 LMS_MIGRATION_ALLOWED_IPS = []