Simple mixin to add CORS headers in a Django View

allow_cors_mixin.py

from django.http import HttpResponse

class AllowCORSMixin(object):

    def add_access_control_headers(self, response):
        response["Access-Control-Allow-Origin"] = "*"
        response["Access-Control-Allow-Methods"] = "GET, OPTIONS"
        response["Access-Control-Max-Age"] = "1000"
        response["Access-Control-Allow-Headers"] = "X-Requested-With, Content-Type"

    def options(self, request, *args, **kwargs):
        response = HttpResponse()
        self.add_access_control_headers(response)
        return response

example_view.py

from django.views.generic import View

from braces.views import AjaxResponseMixin, JSONResponseMixin

class JsonView(JSONResponseMixin, AjaxResponseMixin, AllowCORSMixin, View):

    def get_ajax(self, request, *args, **kwargs):
      
        # ... get some data ...
        
        response = self.render_json_response({ 'data': data })
        self.add_access_control_headers(response)
        return response