[1.11.x] Refs #26610 -- Added CIText mixin and CIChar/Email/TextField.

Backport of fb5bd38e3b83c7f0d1011de80f922fc34faf740b from master

1 files changed, 15 insertions, 3 deletions

diff --git a/django/contrib/postgres/fields/citext.py b/django/contrib/postgres/fields/citext.py
index cab1f87957..42660001ae 100644
--- a/django/contrib/postgres/fields/citext.py
+++ b/django/contrib/postgres/fields/citext.py
@@ -1,8 +1,20 @@
-from django.db.models import CharField
+from django.db.models import CharField, EmailField, TextField
 
-__all__ = ['CITextField']
+__all__ = ['CICharField', 'CIEmailField', 'CIText', 'CITextField']
 
 
-class CITextField(CharField):
+class CIText:
     def db_type(self, connection):
         return 'citext'
+
+
+class CICharField(CIText, CharField):
+    pass
+
+
+class CIEmailField(CIText, EmailField):
+    pass
+
+
+class CITextField(CIText, TextField):
+    pass