Django - accessing the RequestContext from within a custom filter

Question

I\'ve got a filter currency, which takes a value in USD and converts it to a currency (either USD or GBP). The currency to convert to is stored in the session,

Answer 1

If you create a template tag instead of a filter, you are given the context to work with (which contains the request). http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#writing-custom-template-tags