ContentTypeField should use `get_by_natural_key()` to leverage internal caching

[jeremystretch]

NetBox Version

v4.5.1

Python Version

3.12

Area(s) of Concern

• User Interface
• REST API
• GraphQL API
• Python ORM
• Other

Details

The to_internal_value() method of our custom ContentTypeField currently resolves the reference ContentType using get():

netbox/netbox/netbox/api/fields.py

Line 112 in 359179f

return self.queryset.get(app_label=app_label, model=model)

This should call the manager's get_by_natural_key() method instead, to leverage its built-in caching and avoid redundant queries.