Refs -- Doc'd lookups that can be chained with HStoreField key transforms.
@@ -358,6 +358,13 @@ You can chain other lookups after key lookups::
If the key you wish to query by clashes with the name of another lookup, you
need to use the :lookup:`hstorefield.contains` lookup instead.
+.. note::
+
+ Key transforms can also be chained with: :lookup:`contains`,
+ :lookup:`icontains`, :lookup:`endswith`, :lookup:`iendswith`,
+ :lookup:`iexact`, :lookup:`regex`, :lookup:`iregex`, :lookup:`startswith`,
+ and :lookup:`istartswith` lookups.
+
.. warning::
Since any string could be a key in a hstore value, any lookup other than
