Storing temporary data for a custom post type
I've created a Rental custom post type for a rental site I'm developing for a client. I'd like to add an ajax availability calendar in the backend so the client can mark/unmark unavailable dates clicking on them, such as this:
I need to temporary store the marked dates somewhere so they don't get lost when the client moves through months back and forth. I'm wondering if using transients is the best option for this. Any ideas?
Thanks in advance