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AssertionError:如果未提供终结点,则应为view func-python

flask python

0

Devesh Agrawal · 技术社区 · 4 年前

试图用 需要\u字段 装饰工。这就是实现。

import functools
from flask import request, jsonify

def requires_fields(fields):
    required_fields = set(fields)

    def wrapper(func):
        @functools.wraps(func)
        def decorated(*args, **kwargs):
            current_fields = set(request.get_json().keys())
            missing_fields = required_fields - current_fields
            if missing_fields:
                return jsonify({'error': 'missing fields', 'fields': list(missing_fields)}), 400  # Bad Request
            resp = func(*args, **kwargs)
            return resp
    return wrapper

@app.route('/is_registered', methods=['POST'])
@requires_fields(['mobile'])
def is_registered():
    _json = request.get_json()
    keys = _json.keys()
    customer = Customer()
    registered = False

    response = verify_required_params(['mobile'], keys)
    if response:
        return response

    _mobile = _json['mobile']

    validated = validate_mobile(_mobile)
    cust, response_code = customer.get(_mobile)
    if cust is not None and cust['id']:
        registered = True

    if not validated:
        response = responses.get(MOBILE_NUMBER_NOT_VALID)
        return jsonify(response)

    if not registered:
        response = responses.get(MOBILE_NUMBER_NOT_REGISTERED)
        return jsonify(response)

    response = responses.get(MOBILE_NUMBER_REGISTERED)
    return jsonify(response)

它给了我这个错误:

assert view_func is not None, "expected view func if endpoint is not provided."
AssertionError: expected view func if endpoint is not provided.

1 回复 | 直到 4 年前

1

Omar Aflak 4 年前

你忘了还车 decorated 从 wrapper 功能。

当你这么做的时候 @wrapper 在函数顶部 test 例如,你基本上是在写作 test = wrapper(test) .

自如果不返回任何内容,则会出现错误。

def requires_fields(fields):
    required_fields = set(fields)
    def wrapper(func):
        @functools.wraps(func)
        def decorated(*args, **kwargs):
            # ...
        return decorated # you are missing this
    return wrapper