remote/datasette
1
0
Fork 0
mirror of https://github.com/simonw/datasette.git synced 2026-06-14 21:16:56 +02:00
Code Issues Projects Releases Packages Wiki Activity

feat: add a wildcard for _json columns

Browse source
This commit is contained in:
John Hogenmiller 2022-06-10 20:52:07 -04:00
commit 1cdcd8894c
2 changed files with 8 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
datasette/renderer.py
View file

@ -10,13 +10,13 @@ from datasette.utils.asgi import Response
def convert_specific_columns_to_json(rows, columns, json_cols): def convert_specific_columns_to_json(rows, columns, json_cols):
json_cols = set(json_cols) json_cols = set(json_cols)
if not json_cols.intersection(columns): if not json_cols.intersection(columns) and not json_cols == {"*"}:
return rows return rows
new_rows = [] new_rows = []
for row in rows: for row in rows:
new_row = [] new_row = []
for value, column in zip(row, columns): for value, column in zip(row, columns):
if column in json_cols: if column in json_cols or (json_cols == {"*"}):
try: try:
value = json.loads(value) value = json.loads(value)
except (TypeError, ValueError) as e: except (TypeError, ValueError) as e:

6
docs/json_api.rst
View file

@ -190,6 +190,12 @@ query string arguments:
JSON. Without this argument those columns will be returned as JSON objects JSON. Without this argument those columns will be returned as JSON objects
that have been double-encoded into a JSON string value. that have been double-encoded into a JSON string value.
If you have many columns containing JSON values, you can pass ``_json=*``
to attempt converting loading all columns as JSON. This is a best effort
approach. Any columns that fail to render as valid JSON will be passed
through unaltered, while any column with valid JSON will be converted.
There may be a performance impact on large result sets.
Compare `this query without the argument <https://fivethirtyeight.datasettes.com/fivethirtyeight.json?sql=select+%27{%22this+is%22%3A+%22a+json+object%22}%27+as+d&_shape=array>`_ to `this query using the argument <https://fivethirtyeight.datasettes.com/fivethirtyeight.json?sql=select+%27{%22this+is%22%3A+%22a+json+object%22}%27+as+d&_shape=array&_json=d>`_ Compare `this query without the argument <https://fivethirtyeight.datasettes.com/fivethirtyeight.json?sql=select+%27{%22this+is%22%3A+%22a+json+object%22}%27+as+d&_shape=array>`_ to `this query using the argument <https://fivethirtyeight.datasettes.com/fivethirtyeight.json?sql=select+%27{%22this+is%22%3A+%22a+json+object%22}%27+as+d&_shape=array&_json=d>`_
``?_json_infinity=on`` ``?_json_infinity=on``