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copied!<p>The "short name" validator loading you are attempting to use in your example only works if you register that short name / alias with the validator plugin manager (<code>Zend\Validator\ValidatorPluginManager</code>) first.</p> <p>One alternative to this (and the way I do it) is to inject instances of necessary custom validators when creating the form filter object. This is the way ZfcUser does it: </p> <pre><code>// Service factory definition from Module::getServiceConfig 'zfcuser_register_form' => function ($sm) { $options = $sm->get('zfcuser_module_options'); $form = new Form\Register(null, $options); $form->setInputFilter(new Form\RegisterFilter( new Validator\NoRecordExists(array( 'mapper' => $sm->get('zfcuser_user_mapper'), 'key' => 'email' )), new Validator\NoRecordExists(array( 'mapper' => $sm->get('zfcuser_user_mapper'), 'key' => 'username' )), $options )); return $form; }, </code></pre> <p>Source: <a href="https://github.com/ZF-Commons/ZfcUser/blob/master/Module.php#L100" rel="nofollow">https://github.com/ZF-Commons/ZfcUser/blob/master/Module.php#L100</a></p> <p>Here, the two <code>ZfcUser\Validator\NoRecordExists</code> validator instances (one for email and one for username) are injected into the constructor of the input filter object for the registration form (<code>ZfcUser\Form\RegisterFilter</code>). </p> <p>Then, inside the <code>ZfcUser\Form\RegisterFilter</code> class, the validators are added to the element definitions:</p> <pre><code>$this->add(array( 'name' => 'email', 'required' => true, 'validators' => array( array( 'name' => 'EmailAddress' ), // Constructor argument containing instance of the validator $emailValidator ), )); </code></pre> <p>Source: <a href="https://github.com/ZF-Commons/ZfcUser/blob/master/src/ZfcUser/Form/RegisterFilter.php#L37" rel="nofollow">https://github.com/ZF-Commons/ZfcUser/blob/master/src/ZfcUser/Form/RegisterFilter.php#L37</a></p> <p>I believe another alternative is to use the fully-qualified class name as the validator name (ie: "User\Validator\PasswordStrength" instead of just "PasswordStrengthValidator"), though i've never attempted this myself. </p>

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