New in Symfony 4.2: Clear form errors
Form events allow to dynamically modify Symfony Forms. They are used to show/hide fields depending on the value of other fields, to update the values of some field based on the value selected in another field, etc.
That's why in Symfony 4.2 we've added a new
clearErrors() method to remove
any existing errors in the forms:
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$task = ...; $form = $this->createForm(TaskType::class, $task); // ... $form->clearErrors(); // this removes errors from the form and all its children forms $form->clearErrors(true);
Because clearing the errors makes the form valid,
clearErrors() should only
be called after testing whether the form is valid.