Files
edx-platform/common/djangoapps/track/contexts.py
Calen Pennington e2bfcf2a36 Make course ids and usage ids opaque to LMS and Studio [partial commit]
This commit updates common/djangoapps.

These keys are now objects with a limited interface, and the particular
internal representation is managed by the data storage layer (the
modulestore).

For the LMS, there should be no outward-facing changes to the system.
The keys are, for now, a change to internal representation only. For
Studio, the new serialized form of the keys is used in urls, to allow
for further migration in the future.

Co-Author: Andy Armstrong <andya@edx.org>
Co-Author: Christina Roberts <christina@edx.org>
Co-Author: David Baumgold <db@edx.org>
Co-Author: Diana Huang <dkh@edx.org>
Co-Author: Don Mitchell <dmitchell@edx.org>
Co-Author: Julia Hansbrough <julia@edx.org>
Co-Author: Nimisha Asthagiri <nasthagiri@edx.org>
Co-Author: Sarina Canelake <sarina@edx.org>

[LMS-2370]
2014-05-07 12:54:49 -04:00

56 lines
1.4 KiB
Python

"""Generates common contexts"""
import logging
from xmodule.modulestore.locations import SlashSeparatedCourseKey
from opaque_keys import InvalidKeyError
from util.request import COURSE_REGEX
log = logging.getLogger(__name__)
def course_context_from_url(url):
"""
Extracts the course_context from the given `url` and passes it on to
`course_context_from_course_id()`.
"""
url = url or ''
match = COURSE_REGEX.match(url)
course_id = None
if match:
course_id_string = match.group('course_id')
try:
course_id = SlashSeparatedCourseKey.from_deprecated_string(course_id_string)
except InvalidKeyError:
log.warning(
'unable to parse course_id "{course_id}"'.format(
course_id=course_id_string
),
exc_info=True
)
return course_context_from_course_id(course_id)
def course_context_from_course_id(course_id):
"""
Creates a course context from a `course_id`.
Example Returned Context::
{
'course_id': 'org/course/run',
'org_id': 'org'
}
"""
if course_id is None:
return {'course_id': '', 'org_id': ''}
# TODO: Make this accept any CourseKey, and serialize it using .to_string
assert(isinstance(course_id, SlashSeparatedCourseKey))
return {
'course_id': course_id.to_deprecated_string(),
'org_id': course_id.org,
}