71 lines
2.4 KiB
Python
71 lines
2.4 KiB
Python
"""
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Views to support bulk email functionalities like opt-out.
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"""
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import logging
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from six import text_type
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from django.contrib.auth.models import User # lint-amnesty, pylint: disable=imported-auth-user
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from django.http import Http404
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from lms.djangoapps.bulk_email.models import Optout
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from lms.djangoapps.courseware.courses import get_course_by_id
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from common.djangoapps.edxmako.shortcuts import render_to_response
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from lms.djangoapps.discussion.notification_prefs.views import (
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UsernameCipher,
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UsernameDecryptionException,
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)
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from opaque_keys import InvalidKeyError # lint-amnesty, pylint: disable=wrong-import-order
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from opaque_keys.edx.keys import CourseKey # lint-amnesty, pylint: disable=wrong-import-order
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log = logging.getLogger(__name__)
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def opt_out_email_updates(request, token, course_id):
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"""
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A view that let users opt out of any email updates.
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This meant is meant to be the target of an opt-out link or button.
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The `token` parameter must decrypt to a valid username.
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The `course_id` is the string course key of any course.
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Raises a 404 if there are any errors parsing the input.
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"""
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try:
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username = UsernameCipher().decrypt(token).decode("utf-8")
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user = User.objects.get(username=username)
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course_key = CourseKey.from_string(course_id)
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course = get_course_by_id(course_key, depth=0)
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except UnicodeDecodeError:
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raise Http404("base64url") # lint-amnesty, pylint: disable=raise-missing-from
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except UsernameDecryptionException as exn:
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raise Http404(text_type(exn)) # lint-amnesty, pylint: disable=raise-missing-from
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except User.DoesNotExist:
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raise Http404("username") # lint-amnesty, pylint: disable=raise-missing-from
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except InvalidKeyError:
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raise Http404("course") # lint-amnesty, pylint: disable=raise-missing-from
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unsub_check = request.POST.get('unsubscribe', False)
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context = {
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'course': course,
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'unsubscribe': unsub_check
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}
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if request.method == 'GET':
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return render_to_response('bulk_email/confirm_unsubscribe.html', context)
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if request.method == 'POST' and unsub_check:
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Optout.objects.get_or_create(user=user, course_id=course_key)
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log.info(
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u"User %s (%s) opted out of receiving emails from course %s",
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user.username,
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user.email,
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course_id,
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)
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return render_to_response('bulk_email/unsubscribe_success.html', context)
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