django 1.5.1 / cache middleware and ajax functionality not working

Hello,

We are running Django 1.5.1 with some ajax on the front end (http://goo.gl/RuofnO) that allows visitors to add certain pages to their favorites list (similar in functionality to a shopping cart). The 'Save to Favorites' does not seem to function correctly when the cache middleware's are enabled:

 'django.middleware.cache.UpdateCacheMiddleware',
 'django.middleware.cache.FetchFromCacheMiddleware',

If I leave the above middleware's disabled, the ajax 'Save to Favorites" works successfully;

However when caching middlewares are enabled, it may allow you to add one property to the list, but after you will still get 'Favorite Added' message upon clicking 'Save to Favorites' but upon viewing the list you find nothing was added to the list.

I tried applying never cache to the view responsible for the ajax response in attempt exclude this part
of the page from cache, but this did not seem to help any.

#from django.views.decorators.cache import never_cache

 

#@never_cache
def build_favorites(session_favorites):
    listing  = ListingAPI()
    favorites = []
    for prop_type, _id, beds in session_favorites:
        if prop_type == 'robo':
            obj = Property.objects.get(id=_id)
            if beds == '1':
                price = obj.one_bed_price
            elif beds == '2':
                price = obj.two_bed_price
            elif beds == '3':
                price = obj.three_bed_price
        else:
            obj = listing.get(_id).get('listing', {})
            price = obj.get('price','USD')

        favorites.append((prop_type, obj, beds, price))

    return favorites

Does anyone have any ideas on why the 'Save to Favorites' functionality breaks when caching is enabled?

Thanks!

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