我有Flask API都使用phone作为可选的url参数,如下所示,我想使用装饰器来验证电话号码是否正确。 那么我可以得到参数" phone"某个地方没有解析请求网址?
@user_api.route("/<phone>/login")
@check_phone
def login(phone):
f = OrderedDict()
f['error'] = 0
return jsonify(f)
@user_api.route("/<phone>/logout")
@check_phone
def logout(phone):
f = OrderedDict()
f['error'] = 0
return jsonify(f)
答案 0 :(得分:4)
有一种更好的机制来验证内置于Werkzeug(和Flask)的url值。定义converter并像使用路径中的任何其他转换器一样使用它(例如,<int:id>
)。
from werkzeug.routing import BaseConverter, ValidationError
class PhoneConverter(BaseConverter):
regex = r'\d{7,10}' # this validates the basic form of the value
def to_python(self, value):
# do more complicated validation
if not complicated_phone_validation(value):
raise ValidationError('not a valid phone number')
return value
app.url_map.converters['phone'] = PhoneConverter
@app.route('/<phone:phone>')
def get_phone(phone):
# phone is valid
您还可以使用before_request
函数验证所有带手机参数的路线,而无需全部装饰。
from flask import request, abort
@app.before_request
def valid_phone():
if 'phone' not in request.view_args:
return # view has no phone arg
if not complicated_phone_validation(request.view_args['phone']):
abort(404)
@app.route('/<phone>')
def get_phone(phone):
# phone is valid
@app.route('/<other>')
def get_other(other):
# no phone arg, no validation
如果你真的想使用装饰器,可以使用参数调用装饰函数。
from functools import wraps
def check_phone(f):
@wraps(f)
def inner(**kwargs):
phone = kwargs['phone']
# do some validation
return f(**kwargs)
return inner
@app.route('/<phone>')
@check_phone
def get_phone(phone):
# phone is valid