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Backend code for program detail page.

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This adds functions to the catalog utils which munge data
collected from the program endpoint and LMS database to construct
data structures that are ready for use by view and templates
related to the Open EdX marketing pages that live in LMS.

WL-766
This commit is contained in:
Hasnain
2017-02-08 15:07:49 +05:00
committed by Douglas Hall
parent 6626725781
commit 41f3bba058
9 changed files with 197 additions and 107 deletions
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42
openedx/core/djangoapps/programs/utils.py
View File

@@ -5,6 +5,7 @@ import datetime
from urlparse import urljoin
from django.conf import settings
from django.core.cache import cache
from django.core.urlresolvers import reverse
from django.utils.functional import cached_property
from opaque_keys.edx.keys import CourseKey
@@ -15,9 +16,9 @@ from lms.djangoapps.certificates import api as certificate_api
from lms.djangoapps.commerce.utils import EcommerceService
from openedx.core.djangoapps.catalog.utils import get_programs
from openedx.core.djangoapps.content.course_overviews.models import CourseOverview
from openedx.core.lib.edx_api_utils import get_edx_api_data
from student.models import CourseEnrollment
from util.date_utils import strftime_localized
from xmodule.modulestore.django import modulestore
# The datetime module's strftime() methods require a year >= 1900.
@@ -247,9 +248,12 @@ class ProgramDataExtender(object):
self.course_overview = None
self.enrollment_start = None
def extend(self):
def extend(self, include_instructors=False):
"""Execute extension handlers, returning the extended data."""
self._execute('_extend')
if include_instructors:
self._execute('_extend')
else:
self._execute('_extend_course_runs')
return self.data
def _execute(self, prefix, *args):
@@ -261,6 +265,9 @@ class ProgramDataExtender(object):
"""Returns a generator yielding method names beginning with the given prefix."""
return (name for name in cls.__dict__ if name.startswith(prefix))
def _extend_with_instructors(self):
self._execute('_attach_instructors')
def _extend_course_runs(self):
"""Execute course run data handlers."""
for course in self.data['courses']:
@@ -326,3 +333,32 @@ class ProgramDataExtender(object):
run_mode['upgrade_url'] = None
else:
run_mode['upgrade_url'] = None
def _attach_instructors(self):
"""
Extend the program data with instructor data. The instructor data added here is persisted
on each course in modulestore and can be edited in Studio. Once the course metadata publisher tool
supports the authoring of course instructor data, we will be able to migrate course
instructor data into the catalog, retrieve it via the catalog API, and remove this code.
"""
cache_key = 'program.instructors.{uuid}'.format(
uuid=self.data['uuid']
)
program_instructors = cache.get(cache_key)
if not program_instructors:
instructors_by_name = {}
module_store = modulestore()
for course in self.data['courses']:
for course_run in course['course_runs']:
course_run_key = CourseKey.from_string(course_run['key'])
course_descriptor = module_store.get_course(course_run_key)
if course_descriptor:
course_instructors = getattr(course_descriptor, 'instructor_info', {})
# Deduplicate program instructors using instructor name
instructors_by_name.update({instructor.get('name'): instructor for instructor
in course_instructors.get('instructors', [])})
program_instructors = instructors_by_name.values()
cache.set(cache_key, program_instructors, 3600)
self.data['instructors'] = program_instructors