I can't find acts_as_sphinx's forum, so I must throw this question open:
We have installed acts_as_sphinx and set almost everything up. The only issue is getting the :sort_mode working. Now we want to rank products by number of purchases.
When we pass the above options to ask_sphinx, we just get a 105 error out of getResponse().
Sphinx says that purchase_count is a valid column in its index. But the search command line tool does not seem to accept that sort mode, so we can't cross-check.
Also, can we get a GetLastError() out of the Sphinx, to get 105 in English?