34 lines
1.4 KiB
Python
34 lines
1.4 KiB
Python
import logging
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from django.contrib.auth.models import User
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from django.db import models
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log = logging.getLogger(__name__)
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class CourseUserGroup(models.Model):
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"""
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This model represents groups of users in a course. Groups may have different types,
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which may be treated specially. For example, a user can be in at most one cohort per
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course, and cohorts are used to split up the forums by group.
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"""
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class Meta:
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unique_together = (('name', 'course_id'), )
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name = models.CharField(max_length=255,
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help_text=("What is the name of this group? "
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"Must be unique within a course."))
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users = models.ManyToManyField(User, db_index=True, related_name='course_groups',
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help_text="Who is in this group?")
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# Note: groups associated with particular runs of a course. E.g. Fall 2012 and Spring
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# 2013 versions of 6.00x will have separate groups.
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course_id = models.CharField(max_length=255, db_index=True,
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help_text="Which course is this group associated with?")
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# For now, only have group type 'cohort', but adding a type field to support
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# things like 'question_discussion', 'friends', 'off-line-class', etc
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COHORT = 'cohort'
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GROUP_TYPE_CHOICES = ((COHORT, 'Cohort'),)
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group_type = models.CharField(max_length=20, choices=GROUP_TYPE_CHOICES)
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