Counter tag. Can be used to output and increment a counter. For usage, see docstring in the code. This is the first complete tag that I've implemented, I hope that there are no bugs and that it's thread safe.
The first function (ftype_batch) is a view that passes the first part of the CSV filename and a queryset intended to write out to the file. run_batch prepares the HttpResponse for incrementally writing, and write_batch actually writes out the data. The logic in write_batch is custom to what I need done, but as long as the csv writer receives a sequence to write, it should work.
2 snippets posted so far.