class MiddlewareMixin(object):

    def __init__(self, get_response=None):

        self.get_response = get_response

        super(MiddlewareMixin, self).__init__()

    def __call__(self, request):

        response = None

        if hasattr(self, 'process_request'):

            response = self.process_request(request)

        if not response:

            response = self.get_response(request)

        if hasattr(self, 'process_response'):

            response = self.process_response(request, response)

        return response

class CORSMiddleware(MiddlewareMixin):

    def process_response(self, request, response):

        # 添加响应头

        # 允许你的域名来获取我的数据

        response['Access-Control-Allow-Origin'] = "*"

        # 允许你携带Content-Type请求头

        response['Access-Control-Allow-Headers'] = "Content-Type"

        # 允许你发送DELETE,PUT

        response['Access-Control-Allow-Methods'] = "DELETE,PUT"

        return response

from django.utils.deprecation import MiddlewareMixin

class MiddlewareMixin(object):

    def __init__(self, get_response=None):

        self.get_response = get_response

        super(MiddlewareMixin, self).__init__()

    def __call__(self, request):

        response = None

        if hasattr(self, 'process_request'):

            response = self.process_request(request)

        if not response:

            response = self.get_response(request)

        if hasattr(self, 'process_response'):

            response = self.process_response(request, response)

        return response

class CORSMiddleware(MiddlewareMixin):

    def process_response(self, request, response):

        # 添加响应头

        # 允许你的域名来获取我的数据

        response['Access-Control-Allow-Origin'] = "*"

        if request.method == "OPTIONS":

            # 允许你携带Content-Type请求头

            response['Access-Control-Allow-Headers'] = "Content-Type"

            # 允许你发送DELETE,PUT

            response['Access-Control-Allow-Methods'] = "DELETE,PUT"

        return response