Boost document in Solr

Question

i'd like to boost documents in solr only if a certain field has a fixed value for example:

i'd like to boost all documents that have the value of the field colour set to "yellow"

bf=colour:yellow^10

Is it possible?

Answer 1

With edismax, you can do this:

bf=if(exists(query({!v='colour:yellow'})),10,1)

which is a function query.

Ref:

• See point 3 here for function query:
  https://wiki.apache.org/solr/FunctionQuery#Using_FunctionQuery
• For the value query syntax, see https://wiki.apache.org/solr/FunctionQuery#exists