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AjaxCheckMiddleware

Author:
kylefox
Posted:
February 5, 2008
Language:
Python
Version:
.96
Score:
9 (after 9 ratings)

Simply adds an attribute is_ajax to a request object, indicating if the request was made via Ajax. Allows you to reuse a lot of POST processing view code to which you'd like to progressively add Ajax:

if request.is_ajax: return JsonResponse(some_json)

else: return render_to_response('some_template.html')

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class AjaxCheckMiddleware(object):
	def process_request(self, request):
		is_ajax = request.META.get('HTTP_X_REQUESTED_WITH', None) == 'XMLHttpRequest'
		setattr(request, 'is_ajax', is_ajax)
		return None

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Comments

robhudson (on February 5, 2008):

Nice. I'm just now working on something that I wanted to use the idea of "progressive enhancement" and went about this a slightly different way. But this is nice.

Is the "HTTP_X_REQUESTED_WITH" header common in all browsers?

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robhudson (on February 5, 2008):

Sorry, I suppose the header would have to be common in the Javascript library you use since it would be sending headers. Thanks.

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guidors (on September 7, 2011):

I figured out that you can just use request,is_ajax in the template without using any middleware:

{% if request.is_ajax == True %} ajax specific html. {% endif %}

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