I want certain fields to be filled only when user is submitting a link to certain categories (3-5 categories). I know I could add all fields in the links table and use specific forms to display for those categories. Instead of adding all fields in the links table, is there a better way to do this by creating different tables for each of those categories and creating category specific fields in those tables? If so, then how would I display different add/modify forms and more importantly search forms (so only links from that category are displayed and not all results) and optionally if possible also use different templates for those 3-5 categories? Thanks!