From 02e37edf0e0d0ab175048aff20bfd6b28c36da76 Mon Sep 17 00:00:00 2001
From: Toggle <89287578+tgle@users.noreply.github.com>
Date: Wed, 1 Jun 2022 12:53:33 +1000
Subject: [PATCH] Set cache_ok=True for CIText type

Fixes #25, an SAWarning when performing queries with CIText columns
---
 citext/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/citext/__init__.py b/citext/__init__.py
index b9c4bd9..e048217 100644
--- a/citext/__init__.py
+++ b/citext/__init__.py
@@ -10,6 +10,10 @@
 
 
 class CIText(types.Concatenable, types.UserDefinedType):
+    # Tell SQLAlchemy that CIText strings are safe to use as cache keys (like regular strings)
+    # https://docs.sqlalchemy.org/en/14/core/custom_types.html#sqlalchemy.types.TypeDecorator.cache_ok
+    cache_ok = True
+    
     # This is copied from the `literal_processor` of sqlalchemy's own `String`
     # type.
     def literal_processor(self, dialect):