For Ruby the dry gems are pretty nice and help for validation (https://dry-rb.org https://dry-rb.org). There is a dry-validation module, although I found the d

For Ruby the dry gems are pretty nice and help for validation (https://dry-rb.org https://dry-rb.org). There is a dry-validation module, although I found the dry-types and dry-struct gems even nicer for expressing validation directly on my model fields and hash schemes.