Angular 21 Signal Forms: ignoreValidators Explained

W hat happens if a user clicks submit while your async validator is still checking the server? Do you submit bad data? Block the user? Silently fail? Angular Signal Forms now gives you explicit control over that behavior with the ignoreValidators option. In this guide, we'll walk through all three modes so you can choose the right strategy for your real-world Angular applications. Angular Signal Forms: Default Submission Behavior with Async Validators Here we have a simple sign-up form with a username field: If you type something short, you get a minlength validation error: When you type something longer, a "checking availability" message appears: This message comes from an async validator that checks whether the username is already taken. Here's the key behavior to understand: If you click the submit button while the async validator is still running, the submit action runs immediately: You can see this because we log the form value on submission: It does not wait for the async validat