That prototype is a very small amount of code so far: ```diff diff --git a/datasette/renderer.py b/datasette/renderer.py index 4508949..b600e1b 100644 --- a/datasette/renderer.py +++ b/datasette/renderer.py @@ -28,6 +28,10 @@ def convert_specific_columns_to_json(rows, columns, json_cols):

def json_renderer(args, data, view_name): """Render a response as JSON""" + from pprint import pprint + + pprint(data) + status_code = 200

 # Handle the _json= parameter which may modify data["rows"]

@@ -43,6 +47,41 @@ def json_renderer(args, data, view_name): if "rows" in data and not value_as_boolean(args.get("_json_infinity", "0")): data["rows"] = [remove_infinites(row) for row in data["rows"]]

• Start building the default JSON here

• columns = data["columns"]
• next_url = data.get("next_url")
• output = {
• "rows": [dict(zip(columns, row)) for row in data["rows"]],
• "next": data["next"],
• "next_url": next_url,
• } +
• extras = set(args.getlist("_extra")) +
• extras_map = {

• _extra= : data[field]

• "count": "filtered_table_rows_count",
• "facet_results": "facet_results",
• "suggested_facets": "suggested_facets",
• "columns": "columns",
• "primary_keys": "primary_keys",
• "query_ms": "query_ms",
• "query": "query",
• }
• for extra_key, data_key in extras_map.items():
• if extra_key in extras:
• output[extra_key] = data[data_key] +
• body = json.dumps(output, cls=CustomJSONEncoder)
• content_type = "application/json; charset=utf-8"
• headers = {}
• if next_url:
• headers["link"] = f'<{next_url}>; rel="next"'
• return Response(
• body, status=status_code, headers=headers, content_type=content_type
• ) + + # Deal with the _shape option shape = args.get("_shape", "arrays") # if there's an error, ignore the shape entirely ```