Steven Zahm@ reyes
re: Can I simply use a plugin such as “Quick Page/Post Redirect Plugin” if I can’t use a custom development solution?
Honestly do not know… maybe if that plugin also passes the URL query vars to the page being redirected to. The important query var that would need to be passed unaltered is cn-cat=x (from the URL).
re: In fact, where exactly (what file) would you place “form action” code shown in your Google search query link?
You would not place it in any existing file. Ideally a new plugin would be created that would add the necessary javascript to the page footer to change the form action based on the selected category.
I just now thought of a non-javascript method to do this too. You would hook into the template_redirect WordPress action, check for the cn-cat query var and then do a redirect to the correct page ID.
Either way, a plugin need to be created do this… well, technically you do not need a plugin, but it is one of the better ways. If I were to do this as a custom job I would use the Code Snippets plugin instead.
re: How might I get a custom development solution for my form action and at what cost?
Please contact me using the Contact link at the bottom of the page. I will be able to provide you with a quote and timing based on the scope of work discussed in this thread.