[iudqnolq]

The Phoenix framework does this for forms. It requires a whole system built around a type called a Changeset that describes input parameters, their validity, and how to modify a struct to reflect the valid changes. In practice this ends up tightly coupled to the database layer for simplity.

[pokoleo]

Does "tightly coupled with the database" work, in practice?

[bongobingo1]

It's only tightly coupled if you let it be. You can create changesets around any data shape, whether thats connected to your schema' table, a partial view of a table or entirely independent.