Support Debounced Form Validation when validateAfterLoad is true

[NWaterbury]

Note: for support questions, please use stackoverflow. This repository's issues are reserved for feature requests and bug reports.

• I'm submitting a ...
  • [ X] feature request

• Do you want to request a feature or report a bug?

• What is the current behavior?
  When the form loads, and validateAfterLoad is true, validate is called both from the mounted hook and the model watcher.

• What is the expected behavior?
  Validation does not occur twice, but instead is only done once.

• What is the motivation / use case for changing the behavior?
  This is especially useful when using an async validator to query an endpoint

• Please tell us about your environment:

  • Version: [2.3.4]
  • Browser: [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]
  • Language: [all | TypeScript X.X | ES6/7 | ES5 | Dart]

Sample code: