88 lines
2.9 KiB
Python
88 lines
2.9 KiB
Python
"""
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Course API
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"""
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from django.contrib.auth.models import AnonymousUser, User
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from rest_framework.exceptions import PermissionDenied
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from lms.djangoapps.courseware.courses import (
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get_course_overview_with_access,
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get_courses,
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get_permission_for_course_about
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)
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from .permissions import can_view_courses_for_username
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def get_effective_user(requesting_user, target_username):
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"""
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Get the user we want to view information on behalf of.
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"""
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if target_username == requesting_user.username:
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return requesting_user
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elif target_username == '':
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return AnonymousUser()
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elif can_view_courses_for_username(requesting_user, target_username):
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return User.objects.get(username=target_username)
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else:
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raise PermissionDenied()
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def course_detail(request, username, course_key):
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"""
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Return a single course identified by `course_key`.
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The course must be visible to the user identified by `username` and the
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logged-in user should have permission to view courses available to that
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user.
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Arguments:
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request (HTTPRequest):
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Used to identify the logged-in user and to instantiate the course
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module to retrieve the course about description
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username (string):
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The name of the user `requesting_user would like to be identified as.
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course_key (CourseKey): Identifies the course of interest
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Return value:
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`CourseOverview` object representing the requested course
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"""
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user = get_effective_user(request.user, username)
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return get_course_overview_with_access(
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user,
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get_permission_for_course_about(),
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course_key,
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)
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def list_courses(request, username, org=None, filter_=None):
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"""
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Return a list of available courses.
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The courses returned are all be visible to the user identified by
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`username` and the logged in user should have permission to view courses
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available to that user.
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Arguments:
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request (HTTPRequest):
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Used to identify the logged-in user and to instantiate the course
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module to retrieve the course about description
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username (string):
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The name of the user the logged-in user would like to be
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identified as
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Keyword Arguments:
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org (string):
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If specified, visible `CourseOverview` objects are filtered
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such that only those belonging to the organization with the provided
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org code (e.g., "HarvardX") are returned. Case-insensitive.
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filter_ (dict):
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If specified, visible `CourseOverview` objects are filtered
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by the given key-value pairs.
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Return value:
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List of `CourseOverview` objects representing the collection of courses.
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"""
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user = get_effective_user(request.user, username)
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return get_courses(user, org=org, filter_=filter_)
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