Dynamic form field evalutation

You can use the Throttler class to limit the number of request for that particular service. This way, brute force attack are somewhat disabled because they can’t call the service 100 times per second, you force them to wait a certain amount of time before they are allowed to call it again.

And like others have already said, you will need javascript to accomplish this. It’s easy to do if you know javascript. There are tons of example on the web. You just need to fire an event on your input field when a key is pressed, that will launch an ajax request to validate the input text.

Nice.
Yes, I put an eye on it already a whole ago besides thinking about an own implementation.
Thumbs up!

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