Symfony2: my form returns false from isValid() but empty array for getErrors() from unique constraint condition

Question

I have a Customer entity that only has a unique Email field to it. I am trying to edit a customer\'s email and the validation works fine. However I have this in my controller:

Answer 1

For debug purposes you can use $form->getErrorsAsString() instead of $form->getErrors() if you use Symfony 2.*

Quoted from this answer:

$form->getErrorsAsString() should only be used to debug the form...it will contain the errors of each child elements which is not the case of $form->getErrors().

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UPDATE 1:

"With more recent Symfony versions, you must use $form->getErrors(true, false); instead. First param corresponds to deep and second to flatten" (see the comment by @Roubi)