From f99c2f5f8cd1550442f69def0b27f8ec799d6bd8 Mon Sep 17 00:00:00 2001
From: Simon Willison <swillison@gmail.com>
Date: Tue, 27 Feb 2024 16:07:37 -0800
Subject: [PATCH] ?column_notcontains= table filter, closes #2287

---
 datasette/filters.py  | 7 +++++++
 docs/json_api.rst     | 3 +++
 tests/test_filters.py | 5 +++++
 3 files changed, 15 insertions(+)

diff --git a/datasette/filters.py b/datasette/filters.py
index 4d9580d8..585d4865 100644
--- a/datasette/filters.py
+++ b/datasette/filters.py
@@ -281,6 +281,13 @@ class Filters:
                 '{c} contains "{v}"',
                 format="%{}%",
             ),
+            TemplatedFilter(
+                "notcontains",
+                "does not contain",
+                '"{c}" not like :{p}',
+                '{c} does not contain "{v}"',
+                format="%{}%",
+            ),
             TemplatedFilter(
                 "endswith",
                 "ends with",
diff --git a/docs/json_api.rst b/docs/json_api.rst
index 366f74b2..4b39a048 100644
--- a/docs/json_api.rst
+++ b/docs/json_api.rst
@@ -237,6 +237,9 @@ You can filter the data returned by the table based on column values using a que
 ``?column__contains=value``
     Rows where the string column contains the specified value (``column like "%value%"`` in SQL).
 
+``?column__notcontains=value``
+    Rows where the string column does not contain the specified value (``column not like "%value%"`` in SQL).
+
 ``?column__endswith=value``
     Rows where the string column ends with the specified value (``column like "%value"`` in SQL).
 
diff --git a/tests/test_filters.py b/tests/test_filters.py
index 5b2e9636..a3fada98 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -7,6 +7,11 @@ import pytest
     "args,expected_where,expected_params",
     [
         ((("name_english__contains", "foo"),), ['"name_english" like :p0'], ["%foo%"]),
+        (
+            (("name_english__notcontains", "foo"),),
+            ['"name_english" not like :p0'],
+            ["%foo%"],
+        ),
         (
             (("foo", "bar"), ("bar__contains", "baz")),
             ['"bar" like :p0', '"foo" = :p1'],