how to filter search by values that are not available

Question

I have a list of items as:

i = SearchQuerySet().models(Item)

now, each item in i has a attribute, price

I wan

Answer 1

The aim was to sort some items by score based on an boosting by type and plus if a type:bike item has an image. The result should be:

1. Cars
2. Boats
3. Bikes with an image
4. Bikes without an image

This was my first query approach: type:"car"^10000 OR type:"boat"^5000 OR (type:"bike" AND image-type:[* TO *])^100 OR type:"bike"^5 (works fine)

But i forgot old data items without the type field. The should be in the result set like this:

1. Cars
2. Boats
3. Bikes with an image
4. Bikes without an image
5. All items without a type

So i changed my query to -type:[* TO *] OR type:"car"^10000 OR type:"boat"^5000 OR (type:"bike" AND image-type:[* TO *])^100 OR type:"bike"^5 and ended up with no results.

So i found this thread and tried to change my query to -(type:[* TO *] OR -type:"car"^10000 OR -type:"boat"^5000 OR -(type:"bike" AND image-type:[* TO *])^100 OR -type:"bike"^5) like shown in this answer https://stackoverflow.com/a/17211744/326905

But sadly all items have the same score :(