Fixed #36865 -- Removed casting from exact lookups in admin searches.

Instead of casting non-text fields to CharField (which prevents index
usage), skip exact lookups when the search term fails
formfield.to_python().

This preserves index usage for valid searches while gracefully handling
invalid search terms by simply not including them in the query for that
field.

For multi-term searches like 'foo 123' on search_fields=['name', 'age__exact']:
- 'foo': invalid for age, so only name lookup is used
- '123': valid for both, so both lookups are used

This entails a slight increase in permissiveness for search terms that
can be normalized by formfield.to_python().

0 files changed, 0 insertions, 0 deletions