title: Laravel Backpack custom create page with passed in value
body: <p>so I'm trying to figure out how to do a custom create page in Laravel Backpack that would allow me to pass a value in through the URL (think create?folderId=1). What I'm trying to do is akin to <a href="https://github.com/Laravel-Backpack/CRUD/issues/91" rel="nofollow noreferrer">this</a>, however, my create page doesn't need to look any different, I just need to use the value passed through the URL in the store function. I think this should be doable using the same idea as <a href="https://backpackforlaravel.com/articles/tutorials/nested-resources-in-backpack-crud" rel="nofollow noreferrer">this tut</a>, however, I'm not sure how to make a child controller that would affect the create page, not the main crud?</p>