?column_notcontains= table filter, closes #2287

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",

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).
 

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'],