Fixed #21343 -- Noted many-to-many restrictions with intermediate model.

Thanks EvilDMP for the report.

1 files changed, 6 insertions, 2 deletions

diff --git a/docs/ref/models/relations.txt b/docs/ref/models/relations.txt
index 0c47bc4047..7f5eb18ea6 100644
--- a/docs/ref/models/relations.txt
+++ b/docs/ref/models/relations.txt
@@ -138,10 +138,14 @@ Related objects reference
     .. note::
 
        Note that ``add()``, ``create()``, ``remove()``, and ``clear()`` all
-       apply database changes immediately for all types of related fields. In other
-       words, there is no need to call ``save()`` on either end of the
+       apply database changes immediately for all types of related fields. In
+       other words, there is no need to call ``save()`` on either end of the
        relationship.
 
+       Also, if you are using :ref:`an intermediate model
+       <intermediary-manytomany>` for a many-to-many relationship, some of the
+       related manager's methods are disabled.
+
 .. _direct-assignment:
 
 Direct Assignment