Custom validation rule support

[rickmills]

Hi all,

Not sure if I'm just completely missing this in the docs or if its a missing feature, but is it possible to use custom validation rules within forms in Statamic?

I know theres the regex rule but thats surprisingly limited in what it can handle, with many advanced regexes just being ignored.

An example of where this has tripped me up recently would be validating a UK phone number, which is 11 digits, and can have multiple spaces. Its a contact form so you absolutely need to be able to accept a users input having spaces as they're commonly entered that way, but not everyone does it.

Failing this, it would be great if an additional event was registered prior to validation as the FormSubmitted event appears to run afterwards.

[edalzell]

Do you mean on the front end?

[rickmills]

Sorry yes I should've clarified. Specifically on things like contact forms that use a blueprint.

[ryanmitchell]

You could hook into the FormSubmitting event and add some validation logic there?

[edalzell]

Check out this PR: #4949