Define the Models for implementing Quizzes (collections of Questions) and their Responses (collections of Answers to those Questions). These Models would form the basis of storage for such items as: Terms of Service (Quiz) Question ("I agree...") Response -> Answer (answer to "I agree..." confirmation) solution ("Yes" Answer to the "I agree..." Question) Mentor and Student surveys (Quiz) Questions (including "Pay this student?") Response -> Answers solution ("Yes" Answer to the "Pay this student?" Question) Organization applications Student Proposal review, comment, and scoring system GHOP task tracking (a specific task list item would be a Quiz) Patch by: Todd Larsen Review by: Pawel Solyga, Sverre Rabbelier, Chen Lunpeng Review URL: http://codereviews.googleopensourceprograms.com/1403

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from django.db import models

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from django.dispatch import dispatcher

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from django.contrib.contenttypes.models import ContentType

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from django.utils.encoding import force_unicode

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class CommentManager(models.Manager):

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    def in_moderation(self):

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        """

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        QuerySet for all comments currently in the moderation queue.

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        """

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        return self.get_query_set().filter(is_public=False, is_removed=False)

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    def for_model(self, model):

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        """

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        QuerySet for all comments for a particular model (either an instance or

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        a class).

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        """

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        ct = ContentType.objects.get_for_model(model)

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        qs = self.get_query_set().filter(content_type=ct)

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        if isinstance(model, models.Model):

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            qs = qs.filter(object_pk=force_unicode(model._get_pk_val()))

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        return qs