Validate json string against api.model

Question

I want to post json along with image bytes. I'm using api.parser to specify expected parameters:

upload_parser = api.parser()
a=True
upload_parser.add_argument('image',
                           location='files',
                           type=FileStorage,
                           required=True)
# json string
upload_parser.add_argument('params', location='form', type='string')

How could i validate json string against api.model?

Answer 1

Turns out simply api.model.validate() is enough.

payload = json.loads(request.form['params'])       
my_model.validate(payload)