etiquette/etiquette_flask/decorators.py
Ethan Dalool a9c7ad6993 Improve separation between front & back with etiquette_flask package
Move flask-specific operations out of etiquette's files and into new etiquette_flask. In etiquette_site.py, etiquette calls are fully qualified.
2017-05-01 21:23:16 -07:00

35 lines
1.2 KiB
Python

import flask
from flask import request
import functools
from etiquette import jsonify
def required_fields(fields, forbid_whitespace=False):
'''
Declare that the endpoint requires certain POST body fields. Without them,
we respond with 400 and a message.
forbid_whitespace:
If True, then providing the field is not good enough. It must also
contain at least some non-whitespace characters.
'''
def wrapper(function):
@functools.wraps(function)
def wrapped(*args, **kwargs):
for requirement in fields:
missing = (
requirement not in request.form or
(forbid_whitespace and request.form[requirement].strip() == '')
)
if missing:
response = {
'error_type': 'MISSING_FIELDS',
'error_message': 'Required fields: %s' % ', '.join(fields),
}
response = jsonify.make_json_response(response, status=400)
return response
return function(*args, **kwargs)
return wrapped
return wrapper