Files
edx-platform/common/djangoapps/enrollment/data.py
Renzo Lucioni 8d02efb021 Clean up pep8 and pylint violations
Also fixes failing Python unit tests
2014-11-12 12:55:56 -05:00

105 lines
3.7 KiB
Python

"""
Data Aggregation Layer of the Enrollment API. Collects all enrollment specific data into a single
source to be used throughout the API.
"""
import logging
from django.contrib.auth.models import User
from opaque_keys.edx.keys import CourseKey
from xmodule.modulestore.django import modulestore
from enrollment.serializers import CourseEnrollmentSerializer, CourseField
from student.models import CourseEnrollment, NonExistentCourseError
log = logging.getLogger(__name__)
def get_course_enrollments(student_id):
"""Retrieve a list representing all aggregated data for a student's course enrollments.
Construct a representation of all course enrollment data for a specific student.
Args:
student_id (str): The name of the student to retrieve course enrollment information for.
Returns:
A serializable list of dictionaries of all aggregated enrollment data for a student.
"""
qset = CourseEnrollment.objects.filter(
user__username=student_id, is_active=True
).order_by('created')
return CourseEnrollmentSerializer(qset).data # pylint: disable=no-member
def get_course_enrollment(student_id, course_id):
"""Retrieve an object representing all aggregated data for a student's course enrollment.
Get the course enrollment information for a specific student and course.
Args:
student_id (str): The name of the student to retrieve course enrollment information for.
course_id (str): The course to retrieve course enrollment information for.
Returns:
A serializable dictionary representing the course enrollment.
"""
course_key = CourseKey.from_string(course_id)
try:
enrollment = CourseEnrollment.objects.get(
user__username=student_id, course_id=course_key
)
return CourseEnrollmentSerializer(enrollment).data # pylint: disable=no-member
except CourseEnrollment.DoesNotExist:
return None
def update_course_enrollment(student_id, course_id, mode=None, is_active=None):
"""Modify a course enrollment for a student.
Allows updates to a specific course enrollment.
Args:
student_id (str): The name of the student to retrieve course enrollment information for.
course_id (str): The course to retrieve course enrollment information for.
mode (str): (Optional) The mode for the new enrollment.
is_active (boolean): (Optional) Determines if the enrollment is active.
Returns:
A serializable dictionary representing the modified course enrollment.
"""
course_key = CourseKey.from_string(course_id)
student = User.objects.get(username=student_id)
if not CourseEnrollment.is_enrolled(student, course_key):
enrollment = CourseEnrollment.enroll(student, course_key, check_access=True)
else:
enrollment = CourseEnrollment.objects.get(user=student, course_id=course_key)
enrollment.update_enrollment(is_active=is_active, mode=mode)
enrollment.save()
return CourseEnrollmentSerializer(enrollment).data # pylint: disable=no-member
def get_course_enrollment_info(course_id):
"""Returns all course enrollment information for the given course.
Based on the course id, return all related course information..
Args:
course_id (str): The course to retrieve enrollment information for.
Returns:
A serializable dictionary representing the course's enrollment information.
"""
course_key = CourseKey.from_string(course_id)
course = modulestore().get_course(course_key)
if course is None:
log.warning(
u"Requested enrollment information for unknown course {course}"
.format(course=course_id)
)
raise NonExistentCourseError
return CourseField().to_native(course)