Relation Manager Not Showing related items
The section appears at the bottom of my edit CheckoutSession, It just doesnt display any results, however I can see the entries in the DB and the relationships are defined



Solution
Looks like you have an 'id' field on your stripe_checkout_items table, which is presumably set to be the Primary Key in the migration? In which case the stripe_checkout_id you are trying to use as the FK in the relationship would be expected to reference the 'id' PK on the parent. So again, you probably need to modify your relationship methods on the model to specify the "owner key" as well as the foreign key.