I am currently doing the following to select posts from a custom post-type,
query_posts('post_type=slideshow')
I need to somehow make sure that only posts are return if the the taxonomy “available” is returned as NULL or alternatively != to “mobile” is this possible?
So far I have tried,
query_posts('post_type=slideshow¬_in_category=14')
and also
query_posts('post_type=slideshow&available=null')
but to no avail. What else can I try?
Perhaps this will help? http://wordpress.org/support/topic/query-posts-by-taxonomy