Forked from kdonaldson/django-crossdomainxhr-middleware.py
Created
October 15, 2012 23:39
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Middlware that implements CORS for django.
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| import re | |
| from django.utils.text import compress_string | |
| from django.utils.cache import patch_vary_headers | |
| from django import http | |
| ''' | |
| EXAMPLE USAGE: | |
| Put this file in a directory called, eg, 'middleware,' inside your django | |
| project. Make sure to create an __init__.py file in the directory so it can | |
| be included as a module. | |
| Set the values for | |
| settings.XS_SHARING_ALLOWED_ORIGINS | |
| settings.XS_SHARING_ALLOWED_METHODS | |
| settings.XS_SHARING_ALLOWED_HEADERS | |
| in settings.py. Then include | |
| 'modernomad.middleware.crossdomainxhr.CORSMiddleware' | |
| in MIDDLEWARE_CLASSES in settings.py. | |
| ''' | |
| try: | |
| import settings | |
| XS_SHARING_ALLOWED_ORIGINS = settings.XS_SHARING_ALLOWED_ORIGINS | |
| XS_SHARING_ALLOWED_METHODS = settings.XS_SHARING_ALLOWED_METHODS | |
| XS_SHARING_ALLOWED_HEADERS = settings.XS_SHARING_ALLOWED_HEADERS | |
| except: | |
| XS_SHARING_ALLOWED_ORIGINS = '*' | |
| XS_SHARING_ALLOWED_METHODS = ['POST','GET','OPTIONS', 'PUT' ] | |
| #XS_SHARING_ALLOWED_METHODS = ['POST','GET','OPTIONS', 'PUT', 'DELETE'] | |
| XS_SHARING_ALLOWED_HEADERS = [] | |
| class CORSMiddleWare(object): | |
| """ | |
| This middleware allows cross-domain XHR using the html5 postMessage API. | |
| eg. | |
| Access-Control-Allow-Origin: http://foo.example | |
| Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE | |
| Access-Control-Allow-Methods: ["Content-Type"] | |
| """ | |
| def process_request(self, request): | |
| if 'HTTP_ACCESS_CONTROL_REQUEST_METHOD' in request.META: | |
| response = http.HttpResponse() | |
| response['Access-Control-Allow-Origin'] = XS_SHARING_ALLOWED_ORIGINS | |
| response['Access-Control-Allow-Methods'] = ",".join( XS_SHARING_ALLOWED_METHODS ) | |
| response['Access-Control-Allow-Headers'] = ",".join( XS_SHARING_ALLOWED_HEADERS ) | |
| return response | |
| return None | |
| def process_response(self, request, response): | |
| # Avoid unnecessary work | |
| if response.has_header('Access-Control-Allow-Origin'): | |
| return response | |
| response['Access-Control-Allow-Origin'] = XS_SHARING_ALLOWED_ORIGINS | |
| response['Access-Control-Allow-Methods'] = ",".join( XS_SHARING_ALLOWED_METHODS ) | |
| return response |
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