Fixed #24092 -- Widened base field support for ArrayField.

Several issues resolved here, following from a report that a base_field
of GenericIpAddressField was failing.

We were using get_prep_value instead of get_db_prep_value in ArrayField
which was bypassing any extra modifications to the value being made in
the base field's get_db_prep_value. Changing this broke datetime
support, so the postgres backend has gained the relevant operation
methods to send dates/times/datetimes directly to the db backend instead
of casting them to strings. Similarly, a new database feature has been
added allowing the uuid to be passed directly to the backend, as we do
with timedeltas.

On the other side, psycopg2 expects an Inet() instance for IP address
fields, so we add a value_to_db_ipaddress method to wrap the strings on
postgres. We also have to manually add a database adapter to psycopg2,
as we do not wish to use the built in adapter which would turn
everything into Inet() instances.

Thanks to smclenithan for the report.

1 files changed, 1 insertions, 0 deletions

diff --git a/django/db/backends/postgresql_psycopg2/features.py b/django/db/backends/postgresql_psycopg2/features.py
index 64acd0570a..6bb6de1a96 100644
--- a/django/db/backends/postgresql_psycopg2/features.py
+++ b/django/db/backends/postgresql_psycopg2/features.py
@@ -6,6 +6,7 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     needs_datetime_string_cast = False
     can_return_id_from_insert = True
     has_real_datatype = True
+    has_native_uuid_field = True
     has_native_duration_field = True
     driver_supports_timedelta_args = True
     can_defer_constraint_checks = True