The problem with this custom field is that it is on a per post basis and I ideally want to define all posts to have this custom field form one page in the admin tool?
I understand how to query the database, but I want to create something in the admin tool that allows the user to select from a list which posts to add in the sidebar. How can this be done?
The only thing I’ve found is the Options add on for Advanced Custom Fields which stores all this information in the options table.
http://www.advancedcustomfields.com/add-ons/options-page/
