From 5c02a6b0f455e858db01aa9271cefc15736de86a Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Sun, 5 Aug 2018 13:06:26 -0700
Subject: [PATCH] Handle None back from that plugin

---
 datasette/views/table.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/datasette/views/table.py b/datasette/views/table.py
index 88b6748e..0ab1f037 100644
--- a/datasette/views/table.py
+++ b/datasette/views/table.py
@@ -350,9 +350,13 @@ class TableView(RowTableShared):
 
         # filter_arguments plugin hook support
         for awaitable_fn in pm.hook.table_filter():
+            if awaitable_fn is None:
+                continue
             extras = await awaitable_fn(
                 view=self, name=name, table=table, request=request
             )
+            if extras is None:
+                continue
             human_description_extras.extend(extras.human_description_extras)
             where_clauses.extend(extras.where_clauses)
             params.update(extras.params)