create emailer version 1

env/Lib/site-packages/django/contrib/postgres/fields/citext.py

@@ -0,0 +1,23 @@
+from django.db.models import CharField, EmailField, TextField
+
+__all__ = ["CICharField", "CIEmailField", "CIText", "CITextField"]
+
+
+class CIText:
+    def get_internal_type(self):
+        return "CI" + super().get_internal_type()
+
+    def db_type(self, connection):
+        return "citext"
+
+
+class CICharField(CIText, CharField):
+    pass
+
+
+class CIEmailField(CIText, EmailField):
+    pass
+
+
+class CITextField(CIText, TextField):
+    pass