Better demo plugin for query_actions, refs #2293

docs/plugin_hooks.rst

@@ -1561,10 +1561,10 @@ This example adds a new query action linking to a page for explaining a query:
         return [
             {
                 "href": datasette.urls.database(database)
-                + "/-/explain?"
+                + "?"
                 + urllib.parse.urlencode(
                     {
-                        "sql": sql,
+                        "sql": "explain " + sql,
                     }
                 ),
                 "label": "Explain this query",

tests/plugins/my_plugin.py

@@ -401,8 +401,12 @@ def query_actions(datasette, database, query_name, sql):
     return [
         {
             "href": datasette.urls.database(database)
-            + "/-/explain?"
+            + "?"
-            + urllib.parse.urlencode(args),
+            + urllib.parse.urlencode(
+                {
+                    "sql": "explain " + sql,
+                }
+            ),
             "label": "Explain this query",
         },
     ]

tests/test_plugins.py

@@ -949,10 +949,10 @@ async def test_hook_table_actions(ds_client, table_or_view):
 @pytest.mark.parametrize(
     "path,expected_url",
     (
-        ("/fixtures?sql=select+1", "/fixtures/-/explain?sql=select+1"),
+        ("/fixtures?sql=select+1", "/fixtures?sql=explain+select+1"),
         (
             "/fixtures/pragma_cache_size",
-            "/fixtures/-/explain?sql=PRAGMA+cache_size%3B&query_name=pragma_cache_size",
+            "/fixtures?sql=explain+PRAGMA+cache_size%3B",
         ),
     ),
 )