30 lines
1.0 KiB
Python
30 lines
1.0 KiB
Python
"""
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Signal handlers for course goals.
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"""
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from __future__ import absolute_import
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import six
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from django.db import models
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from django.dispatch import receiver
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import six
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from course_modes.models import CourseMode
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from student.models import CourseEnrollment
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from .api import add_course_goal, remove_course_goal
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from .models import GOAL_KEY_CHOICES
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@receiver(models.signals.post_save, sender=CourseEnrollment, dispatch_uid="update_course_goal_on_enroll_change")
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def update_course_goal_on_enroll_change(sender, instance, **kwargs): # pylint: disable=unused-argument
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"""
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Updates goals as follows on enrollment changes:
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1) Set the course goal to 'certify' when the user enrolls as a verified user.
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2) Remove the course goal when the user's enrollment is no longer active.
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"""
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course_id = six.text_type(instance.course_id)
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if not instance.is_active:
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remove_course_goal(instance.user, course_id)
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elif instance.mode == CourseMode.VERIFIED:
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add_course_goal(instance.user, course_id, GOAL_KEY_CHOICES.certify)
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