I have a Post Type Called PROJECT (This is the parent port in the relationship)
When I browse to a post of type project I Would like to have an ADD NEW ENTRY button. When I click on that I will go to a form that creates a post of type PROJECT-ENTRY and passes the form the ID of the post this new entry is supposed to connect to.
I have both Post Types already created and I also have the relationship created and can create Project Entries that connect to a parent POST fine in the wp admin back end.
But how do I do the same in the front end in a secure way so users cannot change the parent post their new entry will be connected to etc.