How to put translator in Zend2 form - zend-framework2

Question

Iam new guy to Zend framework and currently Iam working on Zend2...I want to ask about Translator usage in Zend forms....If i want to use translator i directly using for labels in form view i.e.form_view.php like
$this->formLabel()->setTranslator($translator, 'date_of_birth');
But I want to add the translator at the form only i.e.in src/my_module/Form/UserForm.php
like
$this->add(array(
'name' => 'date_of_birth',
'attributes' => array(
'type' => 'text',
'id' => 'date_of_birth',
),
'options' => array(
'label' => 'DateOfBirth',
), //Here there is any option to put translator
));
Please help me...any answer would be help for me like I asked
Thanks in advance

Answer 1

You don't really need to do that. Since the the Translator that is set up using the factory-key translator will automatically be injected into the Form.
The best approach (in my opinion) is to make extensive use of the translator text_domain:
'translator' => array(
'locale' => 'de_DE',
'translation_file_patterns' => array(
array(
'type' => 'phparray',
'base_dir' => __DIR__ . '/../language',
'pattern' => '%s.php',
'text_domain' => 'MyModuleTextDomain'
),
),
),
With this setup, the Files of your Module will automatically be inserted into the default TranslatorService which every Zend\Form knows of.
So ultimately all you have to do is make the ViewHelpers know of the TextDomain that you are using. And this is done in the following manner:
$this->formLabel()->setTranslatorTextDomain('MyModuleTextDomain');
$this->formButton()->setTranslatorTextDomain('MyModuleTextDomain');
$this->formElementErrors()->setTranslatorTextDomain('MyModuleTextDomain');
You need to do this once inside your respective view.phtml before(!) using the ViewHelpers like $this->formElement($element) or $this->formCollection($form)
And that's really all there is to it. I recall having seen a discussion somewhere about making it easier to pass along Text-Domain-Data, but i can't find it right now. So things may get a little easier in the future ;) For now, 3 lines are all that's needed though!

Answer 2

above answer is quite unnecessary ... as your translator was added automatically to zend form for rendering form labels and ....
only use this code in your module config :
'translator' => array(
'locale' => 'en_US',
'translation_file_patterns' => array(
array(
'type' => 'phparray',
'base_dir' => __DIR__ . '/../language',
'pattern' => '%s.php',
),
),
),
if u use the correct view helpers for rendering form elements (or whole form) it will automatically translated

Answer 3

This is not a recommended approach because forms are translated automatically if you have a translator configured (which you do if you are using the Skeleton Application). However, since you asked how to use the translator directly within your form, I will show you how you can do it. Please carefully consider if you really want to do this, as I cannot imagine a use case where it would be necessary.
To do exactly what you were asking, you can inject the translator into your form. You can do this either in your controller or in a factory. I will be using a factory in this example because it is more DRY.
// In your module's config file
'service_manager' => array(
'factories' => array(
'YourModule\Form\YourForm' => function($sm) {
$translator = $sm->get('Translator');
return new \YourModule\Form\YourForm($translator);
},
),
),
Then in your form class, you can do like this:
namespace YourModule\Form;
class RegisterForm extends \Zend\Form\Form {
public function __construct($translator) {
// Do something
$translated_string = $translator->translate('string to translate');
}
}
Then in your controller, you can do like this:
$your_form = $this->servicelocator->get('YourModule\Form\YourForm');
Or if you don't want to use the factory, you can choose to not add it and do like this instead:
$your_form = new \YourModule\Form\YourForm($this->servicelocator->get('Translator'));
I would recommend going with the factory, though.