Compatibility of `multiple=True` with nested args about webargs HOT 4 CLOSED

multiple=True should work as expected with nested Args.

I've written a test case to verify this here: https://github.com/sloria/webargs/blob/09eceaf120ed4cba88c2c959661c3d52b883d495/tests/test_core.py#L242-254

from webargs.

My usage was with how the various parsers process the args.

For example, if you look at flaskparser.parse_json, it passes arg.multiple to core.get_value. Then in core.get_value, this line gets hit which wraps the JSON data value in a list.

So instead of receiving [{...}, {...}], the value is passed as [[{...}, {...}]] which then fails validation check.

from webargs.

Hotfix is in the latest release on the PyPI. Thanks for reporting this!

from webargs.

For newer versions many works:

@use_args({
    'col': fields.Nested({
        'foo': fields.Str(),
        'bar': fields.Str(),
    }, many=True)
})

curl -d '{"col": [{"foo": "1"}, {"bar": "2"}]}'  -X POST -H 'content-type: application/json' http://server/route 

from webargs.