Django snippets: Accept Header Middleware

import new

def accepts( self, mime ):
    return mime in self.accepted_types

class AcceptMiddleware(object):
    def process_request(self, request):
        acc = [a.split(';')[0] for a in request.META['HTTP_ACCEPT'].split(',')]
        setattr(request, 'accepted_types', acc )
        request.accepts = new.instancemethod(accepts, request, request.__class__)
        return None

A middleware that parses the HTTP_ACCEPT header of a request.

The request gets a new method called "accepts" that takes a string and returns True if it was in the list of accepted mime-types.

It makes it possible to write views like:

def exampleview(request):
    if request.accepts('application/json'):
        # return a json representation

    if request.accepts('text/html'): 
        # return html

Please note that with this middleware the view defines the priority of the mime-types, not the order in which they where provided in the HTTP-Header.

Author:: kioopi
Posted:: April 16, 2008
Language:: Python
Tags:: accept middleware request
Score:: 1 (after 1 rating)

Django snippets

Accept Header Middleware

Tools

Comments

Snippets

About