Created
June 17, 2013 19:51
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| class SubjectStoryQuerySet(QueryBuilderQuerySet): | |
| class Meta: | |
| model = 'stories.Story' | |
| def __init__(self, *args, **kwargs): | |
| super(SubjectStoryQuerySet, self).__init__(*args, **kwargs) | |
| # Create the intermediate queries | |
| self.subject_stories_query = Query().from_table( | |
| table='subjects_subject_topics', | |
| fields=None | |
| ).join( | |
| right_table='subjects_storytopicinstance', | |
| prefix_fields=False, | |
| fields=[ | |
| "story_id", | |
| MaxField(field="relevance", alias="relevance") | |
| ], | |
| condition='subjects_subject_topics.topic_id = subjects_storytopicinstance.topic_id' | |
| ).group_by( | |
| field='subjects_storytopicinstance.story_id' | |
| ) | |
| self.q = Query().from_table( | |
| table={ | |
| "subject_stories": self.subject_stories_query | |
| }, | |
| fields=None | |
| ).join( | |
| right_table='stories_story', | |
| prefix_fields=False, | |
| fields=[ | |
| 'id' | |
| ], | |
| condition='stories_story.id = subject_stories.story_id' | |
| ) | |
| def filter__subject_id(self, filter, expression, value): | |
| print "---filter subject id" | |
| self.subject_stories_query.where(Q( | |
| **filter | |
| )) | |
| def order__(self, field, desc): | |
| self.q.order_by(field=field, desc=desc) | |
| def get_model_queryset(self, queryset, offset, limit): | |
| self.q.limit(limit=limit, offset=offset) | |
| return queryset.filter( | |
| pk__in=[ | |
| story.get('id') | |
| for story | |
| in self.q.select() | |
| ] | |
| ) | |
| def count(self): | |
| return self.q.limit(None, None).count() |
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