I've hired a Wordpress programmer for coding my site in wordpress. I'm using a year slider on portfolio page where one can sort projects within certain range eg 2004 to 2007, 2005 to 2009 etc. He is using posts to publish project details and earlier suggested to use post date as published date, which isn't entirely true and I wasn't comfortable with.
He's looking for another solution where he can filter projects within a range, rather by type, category or just single date. He is stuck on it from a week. I started hunting for examples where a wordpress site is performing that functionality but all in vain. Can someone please suggest a possible solution or an idea that he can try? I'm not very technical in php/coding, a high level concept would be good. Thanks in advance.