55 lines
1.8 KiB
Python
55 lines
1.8 KiB
Python
import flask
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from flask import request
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import functools
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import etiquette
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from . import jsonify
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def catch_etiquette_exception(function):
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'''
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If an EtiquetteException is raised, automatically catch it and convert it
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into a json response so that the user isn't receiving error 500.
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'''
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@functools.wraps(function)
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def wrapped(*args, **kwargs):
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try:
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return function(*args, **kwargs)
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except etiquette.exceptions.EtiquetteException as exc:
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if isinstance(exc, etiquette.exceptions.NoSuch):
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status = 404
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else:
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status = 400
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response = exc.jsonify()
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response = jsonify.make_json_response(response, status=status)
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flask.abort(response)
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return wrapped
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def required_fields(fields, forbid_whitespace=False):
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'''
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Declare that the endpoint requires certain POST body fields. Without them,
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we respond with 400 and a message.
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forbid_whitespace:
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If True, then providing the field is not good enough. It must also
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contain at least some non-whitespace characters.
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'''
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def wrapper(function):
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@functools.wraps(function)
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def wrapped(*args, **kwargs):
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for requirement in fields:
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missing = (
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requirement not in request.form or
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(forbid_whitespace and request.form[requirement].strip() == '')
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)
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if missing:
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response = {
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'error_type': 'MISSING_FIELDS',
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'error_message': 'Required fields: %s' % ', '.join(fields),
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}
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response = jsonify.make_json_response(response, status=400)
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return response
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return function(*args, **kwargs)
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return wrapped
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return wrapper
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