I just finished today an advanced search similar to yours.. we had to let the user search upto 6 attributes... your code is good just missed one important thing... here's my code:
I have about 5 more dropdowns so i wont put them all... the thing is that the field must be named Content_search_attribute_fulltext_classattribute_id[]... adding the [] at the end creates an array of that field... this way you can have various fields with the same name and managed like an array.
i found this code some where in the forum earlier today.. cant remember where now... try to look for it later on if you're still in need of some help..
Do you mean if the attributes are of the selection type?? yes they are.. that's why i created a dropdown for them.. but this shouldn't be a problem..
you can see my search form here(dev server): http://dev2.oneworldmarket.org/index.php/ccb/content/advancedsearch
btw have you enabled empty searches:
[SearchSettings] AllowEmptySearch=enabled
can you paste your code so i can have a look?? maybe i or somebody can find something... but its odd.. just by creating the <inputs> this way it all worked...
response: You must set AllowEmptySearch=enabled in [SearchSettings] in your site.ini(.append) for this to work, because the normal search field is not used.