Fixed #31007 -- Allowed specifying type of auto-created primary keys.

This also changes the default type of auto-created primary keys
for new apps and projects to BigAutoField.

1 files changed, 11 insertions, 0 deletions

diff --git a/docs/ref/applications.txt b/docs/ref/applications.txt
index 765e9e8d3c..2cf175e9f0 100644
--- a/docs/ref/applications.txt
+++ b/docs/ref/applications.txt
@@ -90,6 +90,7 @@ would provide a proper name for the admin::
     from django.apps import AppConfig
 
     class RockNRollConfig(AppConfig):
+        default_auto_field = 'django.db.models.BigAutoField'
         name = 'rock_n_roll'
         verbose_name = "Rock ’n’ roll"
 
@@ -219,6 +220,16 @@ Configurable attributes
 
     By default, this attribute isn't set.
 
+.. attribute:: AppConfig.default_auto_field
+
+    .. versionadded:: 3.2
+
+    The implicit primary key type to add to models within this app. You can
+    use this to keep :class:`~django.db.models.AutoField` as the primary key
+    type for third party applications.
+
+    By default, this is the value of :setting:`DEFAULT_AUTO_FIELD`.
+
 Read-only attributes
 --------------------