POST,PUT和GET工作时无法删除,AngularJS-CORS,Flask-CORS

时间:2014-08-18 07:39:12

标签: python angularjs flask cors flask-extensions

我不知所措,我无法理解当POST,PUT和GET工作正常时DELETE请求是如何通过的。而且我非常确定我已经完成了CORS工作所需的所有配置。我使用的是AngularJS和Flask-CORS扩展

这是我目前的工作:

Angular Config:

angular.module('...' [...]).config(function($httpProvider) {
  $httpProvider.defaults.useXDomain = true;
  delete $httpProvider.defaults.headers.common['X-Requested-With'];
});

Angular工厂:

angular.module('...').factory('...'), function($http) {
  return {
    deleteElectronicAddress: function (partyId, contactMechanismId) {
      return $http({
        url: urlBase + 'party/' + partyId + '/contact-mechanism/' + contactMechanismId,
        method: 'DELETE',
      });
    },

    someMoreMethods: { ... }
  }
}

我的Flask代码,(我使用Miguel Grinberg在他的书Flask Web Development上提出的应用程序结构)

config.py

class Config:
    ...

    CORS_HEADERS = 'Content-Type'
    CORS_RESOURCES = {r"/api/*": {"origins": "*"}}
    CORS_METHODS = ['GET', 'POST', 'DELETE', 'PUT', 'OPTIONS', 'HEAD']

    ...

project_folder /应用/ __ INIT __ PY:

from flask import Flask
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.cors import CORS
from config import config

db = SQLAlchemy()


def create_app(config_name):
    app = Flask(__name__)
    app.config.from_object(config[config_name])
    config[config_name].init_app(app)

    db.init_app(app)
    CORS(app)

    from .api_1_0 import api as api_1_0_blueprint
    app.register_blueprint(api_1_0_blueprint, url_prefix='/api/v1.0')

    return app

我目前正在使用Flask-CORS v1.7.4。

project_folder /应用程序/ API / party_contact_mechanisms.py:

from datetime import date
from flask import jsonify
from .. import db
from ..models import PartyContactMechanism
from . import api

@api.route(
'/party/<int:party_id>' +
'/contact-mechanism/<int:contact_mechanism>', methods=['DELETE'])
def unlink_party_contact_mechanism(party_id, contact_mechanism):
"""Unlink the contact mechanism onto the party."""
     party_contact = PartyContactMechanism.query \
        .filter_by(party_id=party_id) \
        .filter_by(contact_mechanism_id=contact_mechanism) \
        .first()

     party_contact.thru_date = str(date.today())

     db.session.commit()

     return jsonify(success=True)

我已经在本地计算机和局域网上连接的其他计算机上使用httpie进行了测试,它运行正常。

我使用0.0.0.0主机配置运行角度和烧瓶,以便可以在网络上连接的其他计算机上访问它。

这是从浏览器调用时的请求和响应标头

请求标题:

OPTIONS /api/v1.0/party/32232/contact-mechanism/80667 HTTP/1.1
Host: 10.61.18.217:5000
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:31.0) Gecko/20100101      Firefox/31.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Origin: http://0.0.0.0:9000
Access-Control-Request-Method: DELETE
Connection: keep-alive

响应标题:

HTTP/1.0 200 OK
Content-Type: text/html; charset=utf-8
Allow: POST, OPTIONS, DELETE
access-control-allow-origin: *
Access-Control-Allow-Methods: POST
Access-Control-Allow-Headers: Content-Type
Content-Length: 0
Server: Werkzeug/0.9.6 Python/2.7.6
Date: Mon, 18 Aug 2014 07:20:18 GMT

这是从httpie:

调用时的请求和响应标头

请求标题:

DELETE /api/v1.0/party/32232/contact-mechanism/80667 HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate, compress
Content-Length: 0
Host: 10.61.18.217:5000
User-Agent: HTTPie/0.8.0

响应标题:

HTTP/1.0 200 OK
Access-Control-Allow-Headers: Content-Type
Access-Control-Allow-Methods: DELETE, GET, HEAD, OPTIONS, POST, PUT
Access-Control-Allow-Origin: *
Content-Length: 21
Content-Type: application/json
Date: Mon, 18 Aug 2014 07:31:05 GMT
Server: Werkzeug/0.9.6 Python/2.7.6

{
   "success": true
}

1 个答案:

答案 0 :(得分:1)

我得到了我现在做错的事,

实际上我的project_folder/app/api/party_contact_mechanisms.py文件上有另一条路线,我没有费心添加我的样本,因为我觉得它无关紧要(我错了)

这里是:

@api.route(
'/party/<int:party_id>' +
'/contact-mechanism/<int:contact_mechanism>',
methods=['POST'])
@cross_origin(methods=['POST'])
def link_party_contact_mechanism(party_id, contact_mechanism):
"""Link the contact mechanism onto the party."""
    party_contact = PartyContactMechanism(
        party_id=party_id, contact_mechanism=contact_mechanism,
        from_date=str(date.today()), thru_date=None
    )

    db.session.add(party_contact)
    db.session.commit()

    return jsonify({})

你可以看到它有相同的路由规则,但使用不同的方法,在这里它的POST。

在我使用Flask-CORS v1.7之前,我使用的是v1.3,这解释了@cross_origin装饰器,因为这是启用路由CORS的唯一方法(或者如果你想要的话)在你的所有路线上,你把它放在你的before_request

新版本让我错过的是,是的,您现在可以通过初始化来启用整个应用程序CORS,就像我在project_folder/app/__init__.py上做的那样,是的,您仍然可以通过` @ cross_origin&#39;,但是当你这样做时,它会覆盖全局配置,在我的情况下,我有两条路由具有相同的规则但是方法不同,只有一条具有@cross_origin装饰器,并且只有一条路径具有问题

我刚刚将其删除,现在效果很好。警告在你的另一条路线上添加另一个@cross_origin装饰器不会修复它,它似乎只读取它的第一次出现。