NewsBlur/apps/social/models.py

import zlib
import mongoengine as mongo


class MSharedStory(mongo.Document):
    user_id                  = mongo.IntField()
    shared_date              = mongo.DateTimeField()
    comments                 = mongo.StringField()
    has_comments             = mongo.BooleanField(default=False)
    story_feed_id            = mongo.IntField()
    story_date               = mongo.DateTimeField()
    story_title              = mongo.StringField(max_length=1024)
    story_content            = mongo.StringField()
    story_content_z          = mongo.BinaryField()
    story_original_content   = mongo.StringField()
    story_original_content_z = mongo.BinaryField()
    story_content_type       = mongo.StringField(max_length=255)
    story_author_name        = mongo.StringField()
    story_permalink          = mongo.StringField()
    story_guid               = mongo.StringField(unique_with=('user_id',))
    story_tags               = mongo.ListField(mongo.StringField(max_length=250))
    
    meta = {
        'collection': 'shared_stories',
        'indexes': [('user_id', '-shared_date'), ('user_id', 'story_feed_id'), 'story_feed_id'],
        'index_drop_dups': True,
        'ordering': ['-shared_date'],
        'allow_inheritance': False,
    }
    
    def save(self, *args, **kwargs):
        if self.story_content:
            self.story_content_z = zlib.compress(self.story_content)
            self.story_content = None
        if self.story_original_content:
            self.story_original_content_z = zlib.compress(self.story_original_content)
            self.story_original_content = None
        super(MSharedStory, self).save(*args, **kwargs)