54 lines
1.7 KiB
Python
54 lines
1.7 KiB
Python
"""
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Certificate service
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"""
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import logging
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from django.core.exceptions import ObjectDoesNotExist
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from opaque_keys.edx.keys import CourseKey
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from lms.djangoapps.certificates.generation_handler import is_using_certificate_allowlist_and_is_on_allowlist
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from lms.djangoapps.certificates.models import GeneratedCertificate
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from lms.djangoapps.utils import _get_key
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log = logging.getLogger(__name__)
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class CertificateService(object):
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"""
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User Certificate service
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"""
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def invalidate_certificate(self, user_id, course_key_or_id):
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"""
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Invalidate the user certificate in a given course if it exists and the user is not on the allowlist for this
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course run.
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"""
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course_key = _get_key(course_key_or_id, CourseKey)
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if is_using_certificate_allowlist_and_is_on_allowlist(user_id, course_key):
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log.info('{course_key} is using allowlist certificates, and the user {user_id} is on its allowlist. The '
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'certificate will not be invalidated.'.format(course_key=course_key, user_id=user_id))
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return False
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try:
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generated_certificate = GeneratedCertificate.objects.get(
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user=user_id,
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course_id=course_key
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)
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generated_certificate.invalidate()
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log.info(
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u'Certificate invalidated for user %d in course %s',
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user_id,
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course_key
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)
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except ObjectDoesNotExist:
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log.warning(
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u'Invalidation failed because a certificate for user %d in course %s does not exist.',
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user_id,
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course_key
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)
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return False
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return True
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