Added 'not like' table filter, refs #750

datasette/filters.py

@@ -137,6 +137,9 @@ class Filters:
                 "lte", "\u2264", '"{c}" <= :{p}', "{c} \u2264 {v}", numeric=True
             ),
             TemplatedFilter("like", "like", '"{c}" like :{p}', '{c} like "{v}"'),
+            TemplatedFilter(
+                "notlike", "not like", '"{c}" not like :{p}', '{c} not like "{v}"'
+            ),
             TemplatedFilter("glob", "glob", '"{c}" glob :{p}', '{c} glob "{v}"'),
             InFilter(),
             NotInFilter(),

docs/json_api.rst

@@ -216,6 +216,9 @@ You can filter the data returned by the table based on column values using a que
 ``?column__like=value``
     Match rows with a LIKE clause, case insensitive and with ``%`` as the wildcard character.
 
+``?column__notlike=value``
+    Match rows that do not match the provided LIKE clause.
+
 ``?column__glob=value``
     Similar to LIKE but uses Unix wildcard syntax and is case sensitive.
 

tests/test_filters.py

@@ -32,6 +32,8 @@ import pytest
             ['"foo" like :p0', '"foo" like :p1'],
             ["2%2", "3%3"],
         ),
+        # notlike:
+        ((("foo__notlike", "2%2"),), ['"foo" not like :p0'], ["2%2"],),
         (
             (("foo__isnull", "1"), ("baz__isnull", "1"), ("bar__gt", "10")),
             ['"bar" > :p0', '"baz" is null', '"foo" is null'],