Empty string as acceptable value on non-optional field?

[noahadler]

What is the correct way to allow an empty string ('') to validate? I haven't marked this field as optional, but I set min to 0. I'd expect it to reject my insert if I passed null, undefined, or omitted the field entirely, but it seems to also reject an empty string. Is this by design? For certain applications, might it make sense to allow empty string as an acceptable value? I'm willing to try to work around this, but wanted to be sure it's a design decision that I can learn, and not a bug. Thanks!

[aldeed]

Yes, an empty string fails required validation by design. If there are enough complaints, this could be changed, but I think it generally makes sense. To make it allow an empty string but not null or undefined, you could use optional: true along with a custom function similar to this:

function () {
  if (!this.operator && this.value == null) {
    return "required";
  }
}

[green-coder]

I ran into the same corner case, where I have a non-optional string which is allowed to be empty.

Polite complain +1.