If one of the references/links provided is Wikipedia, then use the same url_id as them

[amaury1093]

E.g. https://en.wikipedia.org/wiki/Kingdom_of_France -> url_id = Kingdom_of_France

[amaury1093]

Actually, should this be done on the frontend or the backend?

[quorth0n]

I would say frontend actually, the url_id text input then can be automatically populated based on the field. I like this approach better than hard locking any data into the backend.