How to combine two or more querysets in a Django view?

Question

I am trying to build the search for a Django site I am building, and in that search, I am searching in 3 different models. And to get pagination on the search result list, I

Answer 1

You can use Union

qs = qs1.union(qs2, qs3)

But if you want to apply order_by on the foreign models of the combined queryset.. then you need to Select them before hand this way.. otherwise it won't work

Example

qs = qs1.union(qs2.select_related("foreignModel"), qs3.select_related("foreignModel"))
qs.order_by("foreignModel__prop1")

where prop1 is a property in the foreign model