Fixed #32292 -- Added support for connection by service name to PostgreSQL.

docs/ref/databases.txt

@@ -108,11 +108,43 @@ required, though the latest release is recommended.
 
 .. _psycopg2: https://www.psycopg.org/
 
+.. _postgresql-connection-settings:
+
 PostgreSQL connection settings
 -------------------------------
 
 See :setting:`HOST` for details.
 
+To connect using a service name from the `connection service file`_, you must
+specify it in the :setting:`OPTIONS` part of your database configuration in
+:setting:`DATABASES`:
+
+.. code-block:: python
+    :caption: settings.py
+
+    DATABASES = {
+        'default': {
+            'ENGINE': 'django.db.backends.postgresql',
+            'OPTIONS': {'service': 'my_service'},
+        }
+    }
+
+.. code-block:: text
+    :caption: .pg_service.conf
+
+    [my_service]
+    host=localhost
+    user=USER
+    dbname=NAME
+    password=PASSWORD
+    port=5432
+
+.. _connection service file: https://www.postgresql.org/docs/current/libpq-pgservice.html
+
+.. versionchanged:: 4.0
+
+    Support for connecting by a service name was added.
+
 Optimizing PostgreSQL's configuration
 -------------------------------------