201 lines
6.3 KiB
Python
201 lines
6.3 KiB
Python
"""
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WE'RE USING MIGRATIONS!
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If you make changes to this model, be sure to create an appropriate migration
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file and check it in at the same time as your model changes. To do that,
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1. Go to the mitx dir
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2. ./manage.py schemamigration courseware --auto description_of_your_change
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3. Add the migration file created in mitx/courseware/migrations/
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ASSUMPTIONS: modules have unique IDs, even across different module_types
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"""
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from django.db import models
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#from django.core.cache import cache
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from django.contrib.auth.models import User
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#from cache_toolbox import cache_model, cache_relation
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#CACHE_TIMEOUT = 60 * 60 * 4 # Set the cache timeout to be four hours
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class StudentModule(models.Model):
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"""
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Keeps student state for a particular module in a particular course.
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"""
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# For a homework problem, contains a JSON
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# object consisting of state
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MODULE_TYPES = (('problem', 'problem'),
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('video', 'video'),
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('html', 'html'),
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)
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## These three are the key for the object
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module_type = models.CharField(max_length=32, choices=MODULE_TYPES, default='problem', db_index=True)
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# Key used to share state. By default, this is the module_id,
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# but for abtests and the like, this can be set to a shared value
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# for many instances of the module.
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# Filename for homeworks, etc.
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module_state_key = models.CharField(max_length=255, db_index=True, db_column='module_id')
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student = models.ForeignKey(User, db_index=True)
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course_id = models.CharField(max_length=255, db_index=True)
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class Meta:
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unique_together = (('student', 'module_state_key', 'course_id'),)
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## Internal state of the object
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state = models.TextField(null=True, blank=True)
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## Grade, and are we done?
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grade = models.FloatField(null=True, blank=True, db_index=True)
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max_grade = models.FloatField(null=True, blank=True)
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DONE_TYPES = (('na', 'NOT_APPLICABLE'),
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('f', 'FINISHED'),
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('i', 'INCOMPLETE'),
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)
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done = models.CharField(max_length=8, choices=DONE_TYPES, default='na', db_index=True)
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created = models.DateTimeField(auto_now_add=True, db_index=True)
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modified = models.DateTimeField(auto_now=True, db_index=True)
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def __repr__(self):
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return 'StudentModule<%r>' % ({
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'course_id': self.course_id,
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'module_type': self.module_type,
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'student': self.student.username,
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'module_state_key': self.module_state_key,
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'state': str(self.state)[:20],
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},)
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def __unicode__(self):
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return unicode(repr(self))
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class XModuleContentField(models.Model):
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"""
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Stores data set in the Scope.content scope by an xmodule field
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"""
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class Meta:
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unique_together = (('definition_id', 'field_name'),)
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# The name of the field
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field_name = models.CharField(max_length=64, db_index=True)
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# The definition id for the module
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definition_id = models.CharField(max_length=255, db_index=True)
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# The value of the field. Defaults to None dumped as json
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value = models.TextField(default='null')
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created = models.DateTimeField(auto_now_add=True, db_index=True)
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modified = models.DateTimeField(auto_now=True, db_index=True)
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def __repr__(self):
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return 'XModuleContentField<%r>' % ({
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'field_name': self.field_name,
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'definition_id': self.definition_id,
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'value': self.value,
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},)
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def __unicode__(self):
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return unicode(repr(self))
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class XModuleSettingsField(models.Model):
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"""
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Stores data set in the Scope.settings scope by an xmodule field
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"""
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class Meta:
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unique_together = (('usage_id', 'field_name'),)
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# The name of the field
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field_name = models.CharField(max_length=64, db_index=True)
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# The usage id for the module
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usage_id = models.CharField(max_length=255, db_index=True)
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# The value of the field. Defaults to None, dumped as json
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value = models.TextField(default='null')
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created = models.DateTimeField(auto_now_add=True, db_index=True)
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modified = models.DateTimeField(auto_now=True, db_index=True)
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def __repr__(self):
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return 'XModuleSettingsField<%r>' % ({
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'field_name': self.field_name,
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'usage_id': self.usage_id,
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'value': self.value,
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},)
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def __unicode__(self):
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return unicode(repr(self))
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class XModuleStudentPrefsField(models.Model):
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"""
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Stores data set in the Scope.student_preferences scope by an xmodule field
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"""
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class Meta:
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unique_together = (('student', 'module_type', 'field_name'),)
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# The name of the field
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field_name = models.CharField(max_length=64, db_index=True)
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# The type of the module for these preferences
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module_type = models.CharField(max_length=64, db_index=True)
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# The value of the field. Defaults to None dumped as json
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value = models.TextField(default='null')
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student = models.ForeignKey(User, db_index=True)
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created = models.DateTimeField(auto_now_add=True, db_index=True)
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modified = models.DateTimeField(auto_now=True, db_index=True)
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def __repr__(self):
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return 'XModuleStudentPrefsField<%r>' % ({
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'field_name': self.field_name,
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'module_type': self.module_type,
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'student': self.student.username,
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'value': self.value,
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},)
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def __unicode__(self):
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return unicode(repr(self))
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class XModuleStudentInfoField(models.Model):
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"""
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Stores data set in the Scope.student_preferences scope by an xmodule field
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"""
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class Meta:
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unique_together = (('student', 'field_name'),)
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# The name of the field
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field_name = models.CharField(max_length=64, db_index=True)
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# The value of the field. Defaults to None dumped as json
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value = models.TextField(default='null')
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student = models.ForeignKey(User, db_index=True)
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created = models.DateTimeField(auto_now_add=True, db_index=True)
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modified = models.DateTimeField(auto_now=True, db_index=True)
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def __repr__(self):
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return 'XModuleStudentInfoField<%r>' % ({
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'field_name': self.field_name,
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'student': self.student.username,
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'value': self.value,
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},)
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def __unicode__(self):
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return unicode(repr(self))
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