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from django.db import models
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class SourceManager(models.Manager):
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def get_query_set(self):
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return super(SourceManager, self).get_query_set().filter(is_public=True)
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class Source(models.Model):
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is_public = models.BooleanField()
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objects = SourceManager()
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class Item(models.Model):
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source = models.ForeignKey(Source)