How do I `jsonify` a list in Flask? [duplicate]


Currently Flask would raise an error when jsonifying a list.

I know there could be security reasons https://github.com/mitsuhiko/flask/issues/170, but I still would like to have a way to return a JSON list like the following:

[
    {'a': 1, 'b': 2},
    {'a': 5, 'b': 10}
]

instead of

{ 'results': [
    {'a': 1, 'b': 2},
    {'a': 5, 'b': 10}
]}

on responding to a application/json request. How can I return a JSON list in Flask using Jsonify?


Answers:


jsonify prevents you from doing this in Flask 0.10 and lower for security reasons.

To do it anyway, just use json.dumps in the Python standard library.

http://docs.python.org/library/json.html#json.dumps