From 97d48cd3c6f409584b5cc19fbddfca917bae78fd Mon Sep 17 00:00:00 2001
From: David Sanders <>
Date: Sun, 21 Apr 2024 16:46:26 +1000
Subject: Refs #34007, Refs #35359 -- Added Q.referenced_based_fields property.

Thank you to Mariusz Felisiak and Natalia Bidart for the reviews.
---
 django/db/models/query_utils.py | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'django')

diff --git a/django/db/models/query_utils.py b/django/db/models/query_utils.py
index 9be17a4a84..1bf396723e 100644
--- a/django/db/models/query_utils.py
+++ b/django/db/models/query_utils.py
@@ -175,6 +175,19 @@ class Q(tree.Node):
     def __hash__(self):
         return hash(self.identity)
 
+    @cached_property
+    def referenced_base_fields(self):
+        """
+        Retrieve all base fields referenced directly or through F expressions
+        excluding any fields referenced through joins.
+        """
+        # Avoid circular imports.
+        from django.db.models.sql import query
+
+        return {
+            child.split(LOOKUP_SEP, 1)[0] for child in query.get_children_from_q(self)
+        }
+
 
 class DeferredAttribute:
     """
-- 
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