Enable caching of object attributes in search index

[jeremystretch]

NetBox version

v3.7.3

Feature type

New functionality

Proposed functionality

Extend SearchIndex to enable caching object attributes in addition to concrete model fields. This can be achieved by tweaking its get_field_type() method to also accept attributes. (get_field_value() probably doesn't need modification as it's simply wrapping getattr().)

Use case

This will enable NetBox to capture rendered attributes in addition to raw database values. For instance, #14201 requests caching the number of an ASN object as the string "AS1234" in addition to the plain numeric value.

Database changes

None expected

External dependencies

None