How to return only indexed objects of a specific type in Haystack

问题

Is there any way to use SearchQuerySet and restrict the results to only a specific indexed model? i.e. If i add Note and NoteIndex to Haystack, can I pull out just results that correspond to Note instances?

EDIT:

I have had a look and found that there is a reserved field named django_ct that is stored on every indexed model. Is it possible to filter on this field? What values does it take?

DOUBLE EDIT:

Nevermind. After reading the Haystack source code, django_ct is 'appname.modelname' internally and can be querired with SearchQuerySet.filter(django_ct = 'appname.modelname')

回答1:

According to the Haystack documentation, a SearchQueryset object has a method called models() that restricts the results to those models.

e.g.

SearchQuerySet().models(BlogEntry, Comment).filter(content='foo')

As you see, it uses the actual model class. My guess is that it uses this to lookup the content-type to perform filter.

来源：https://stackoverflow.com/questions/9466012/how-to-return-only-indexed-objects-of-a-specific-type-in-haystack