common.py

# -*- coding: utf-8 -*-
"""
This is the common settings file, intended to set sane defaults. If you have a
piece of configuration that's dependent on a set of feature flags being set,
then create a function that returns the calculated value based on the value of
FEATURES[...]. Modules that extend this one can change the feature
configuration in an environment specific config file and re-calculate those
values.

We should make a method that calls all these config methods so that you just
make one call at the end of your site-specific dev file to reset all the
dependent variables (like INSTALLED_APPS) for you.

Longer TODO:
1. Right now our treatment of static content in general and in particular
   course-specific static content is haphazard.
2. We should have a more disciplined approach to feature flagging, even if it
   just means that we stick them in a dict called FEATURES.
3. We need to handle configuration for multiple courses. This could be as
   multiple sites, but we do need a way to map their data assets.
"""

# We intentionally define lots of variables that aren't used
# pylint: disable=unused-import

# Pylint gets confused by path.py instances, which report themselves as class
# objects. As a result, pylint applies the wrong regex in validating names,
# and throws spurious errors. Therefore, we disable invalid-name checking.
# pylint: disable=invalid-name

import imp
import sys
import os

from corsheaders.defaults import default_headers as corsheaders_default_headers
from path import Path as path
from django.utils.translation import ugettext_lazy as _
from enterprise.constants import (
    ENTERPRISE_ADMIN_ROLE,
    ENTERPRISE_OPERATOR_ROLE,
    ENTERPRISE_DASHBOARD_ADMIN_ROLE,
    ENTERPRISE_CATALOG_ADMIN_ROLE,
    ENTERPRISE_ENROLLMENT_API_ADMIN_ROLE
)

from openedx.core.constants import COURSE_KEY_REGEX, COURSE_KEY_PATTERN, COURSE_ID_PATTERN
from openedx.core.djangoapps.theming.helpers_dirs import (
    get_themes_unchecked,
    get_theme_base_dirs_from_settings
)
from openedx.core.lib.derived import derived, derived_collection_entry
from openedx.core.release import doc_version
from xmodule.modulestore.modulestore_settings import update_module_store_settings
from xmodule.modulestore.edit_info import EditInfoMixin
from lms.djangoapps.lms_xblock.mixin import LmsBlockMixin

################################### FEATURES ###################################
# The display name of the platform to be used in templates/emails/etc.
PLATFORM_NAME = _('Your Platform Name Here')
PLATFORM_DESCRIPTION = _('Your Platform Description Here')
CC_MERCHANT_NAME = PLATFORM_NAME

PLATFORM_FACEBOOK_ACCOUNT = "http://www.facebook.com/YourPlatformFacebookAccount"
PLATFORM_TWITTER_ACCOUNT = "@YourPlatformTwitterAccount"

ENABLE_JASMINE = False

LMS_ROOT_URL = "http://localhost:8000"
LMS_INTERNAL_ROOT_URL = LMS_ROOT_URL
LMS_ENROLLMENT_API_PATH = "/api/enrollment/v1/"

# Default choices for role dropdown in the membership tab of the instructor dashboard
# This setting is used when a site does not define its own choices via site configuration
MANUAL_ENROLLMENT_ROLE_CHOICES = ['Learner', 'Support', 'Partner']

# List of logout URIs for each IDA that the learner should be logged out of when they logout of the LMS. Only applies to
# IDA for which the social auth flow uses DOT (Django OAuth Toolkit).
IDA_LOGOUT_URI_LIST = []

# Features
FEATURES = {
    'DISPLAY_DEBUG_INFO_TO_STAFF': True,
    'DISPLAY_HISTOGRAMS_TO_STAFF': False,  # For large courses this slows down courseware access for staff.

    'REROUTE_ACTIVATION_EMAIL': False,  # nonempty string = address for all activation emails

    ## DO NOT SET TO True IN THIS FILE
    ## Doing so will cause all courses to be released on production
    'DISABLE_START_DATES': False,  # When True, all courses will be active, regardless of start date

    # for consistency in user-experience, keep the value of the following 3 settings
    # in sync with the corresponding ones in cms/envs/common.py
    'ENABLE_DISCUSSION_SERVICE': True,
    'ENABLE_TEXTBOOK': True,

    # .. toggle_name: ENABLE_STUDENT_NOTES
    # .. toggle_type: feature_flag
    # .. toggle_default: True
    # .. toggle_description: Enables the Student Notes API and UI.
    # .. toggle_category: ????
    # .. toggle_use_cases: open_edx
    # .. toggle_creation_date: 2014-11-13
    # .. toggle_expiration_date: None
    # .. toggle_warnings: None
    # .. toggle_tickets: TNL-659
    # .. toggle_status: supported
    'ENABLE_STUDENT_NOTES': True,

    # discussion home panel, which includes a subscription on/off setting for discussion digest emails.
    # this should remain off in production until digest notifications are online.
    'ENABLE_DISCUSSION_HOME_PANEL': False,

    # Set this to True if you want the discussion digest emails enabled automatically for new users.
    # This will be set on all new account registrations.
    # It is not recommended to enable this feature if ENABLE_DISCUSSION_HOME_PANEL is not enabled, since
    # subscribers who receive digests in that case will only be able to unsubscribe via links embedded
    # in their emails, and they will have no way to resubscribe.
    'ENABLE_DISCUSSION_EMAIL_DIGEST': False,

    'ENABLE_DJANGO_ADMIN_SITE': True,  # set true to enable django's admin site, even on prod (e.g. for course ops)
    'ENABLE_SQL_TRACKING_LOGS': False,
    'ENABLE_LMS_MIGRATION': False,

    'ENABLE_MASQUERADE': True,  # allow course staff to change to student view of courseware

    # .. toggle_name: ENABLE_SYSADMIN_DASHBOARD
    # .. toggle_type: feature_flag
    # .. toggle_default: False
    # .. toggle_description: enables dashboard at /syadmin/ for django staff, for seeing overview of system status, for deleting and loading courses, for seeing log of git imports of courseware.
    # .. toggle_category: admin
    # .. toggle_use_cases: open_edx
    # .. toggle_creation_date: 2013-12-12
    # .. toggle_expiration_date: None
    # .. toggle_warnings: some views are not performant when there are more than 100 courses
    # .. toggle_tickets: None
    # .. toggle_status: unsupported
    'ENABLE_SYSADMIN_DASHBOARD': False,  # sysadmin dashboard, to see what courses are loaded, to delete & load courses

    'DISABLE_LOGIN_BUTTON': False,  # used in systems where login is automatic, eg MIT SSL

    # Toggles OAuth2 authentication provider
    'ENABLE_OAUTH2_PROVIDER': False,

    # Allows to enable an API endpoint to serve XBlock view, used for example by external applications.
    # See jquey-xblock: https://github.com/edx-solutions/jquery-xblock
    'ENABLE_XBLOCK_VIEW_ENDPOINT': False,

    # Allows to configure the LMS to provide CORS headers to serve requests from other domains
    'ENABLE_CORS_HEADERS': False,

    # Can be turned off if course lists need to be hidden. Effects views and templates.
    'COURSES_ARE_BROWSABLE': True,

    # Set to hide the courses list on the Learner Dashboard if they are not enrolled in any courses yet.
    'HIDE_DASHBOARD_COURSES_UNTIL_ACTIVATED': False,

    # enable analytics server.
    # WARNING: THIS SHOULD ALWAYS BE SET TO FALSE UNDER NORMAL
    # LMS OPERATION. See analytics.py for details about what
    # this does.
    'RUN_AS_ANALYTICS_SERVER_ENABLED': False,

    # Give a UI to show a student's submission history in a problem by the
    # Staff Debug tool.
    'ENABLE_STUDENT_HISTORY_VIEW': True,

    # Provide a UI to allow users to submit feedback from the LMS (left-hand help modal)
    'ENABLE_FEEDBACK_SUBMISSION': False,

    # Turn on a page that lets staff enter Python code to be run in the
    # sandbox, for testing whether it's enabled properly.
    'ENABLE_DEBUG_RUN_PYTHON': False,

    # Enable URL that shows information about the status of variuous services
    'ENABLE_SERVICE_STATUS': False,

    # Don't autoplay videos for students
    'AUTOPLAY_VIDEOS': False,

    # Move the student to next page when a video finishes. Set to True to show
    # an auto-advance button in videos. If False, videos never auto-advance.
    'ENABLE_AUTOADVANCE_VIDEOS': False,

    # Enable instructor dash to submit background tasks
    'ENABLE_INSTRUCTOR_BACKGROUND_TASKS': True,

    # Enable instructor to assign individual due dates
    # Note: In order for this feature to work, you must also add
    # 'lms.djangoapps.courseware.student_field_overrides.IndividualStudentOverrideProvider' to
    # the setting FIELD_OVERRIDE_PROVIDERS, in addition to setting this flag to
    # True.
    'INDIVIDUAL_DUE_DATES': False,

    # Enable Custom Courses for EdX
    'CUSTOM_COURSES_EDX': False,

    # Toggle to enable certificates of courses on dashboard
    'ENABLE_VERIFIED_CERTIFICATES': False,

    # .. toggle_name: DISABLE_HONOR_CERTIFICATES