Editor select collection for display on page
I have a really simple function on a Runway page that looks like this:
perch_collection('Things', [ 'template' => 'collections/display' ]);
I would like to use this page as a master page, and allow the editor to add new pages and select different collections to be used (to replace
Things in the example above). What is the best way to give them a select box to choose the collection to be displayed on that page?