Validation Logic

[aklscv]

How would you share the validation logic between the Create and Update methods on the CustomerController if you needed to check for name, email and email validation uniqueness on both methods? Would a private method be sufficient? What if that logic needed to be shared somewhere else?

[vkhorikov]

If it's just 2 places (create and update), I usually don't bother to gather this logic into a single spot, just duplicate the uniqueness validation. If becomes needed somewhere else -- look at why. If it's a totally unrelated API endpoint, then duplicate it there too. If it's something related to customer creation/update, then add a domain service and move that logic there (though most likely, you'd need to move more than just uniqueness validation).

[aklscv]

Thank you for your insight!