symfony2显示两次表单的字段

I have a list of "hours" that workers passed on mandates. An admin can check them (checkbox)to add them to a bill, (but he can adapt the real hours)

So, I have an array of hour selected, in my controler I get the hours :

$hours = $repository->findBy(array('id' => $tabHour));

so $hours countain more than one hour, I thought that if I was creating a form with $hours, it will automaticly display the fields more than once..

foreach($hours as $key => $test){

    $billedHour[$key] = new BilledHour();
    $form[$key] = $this->container->get('form.factory')->create(new BillMandateForm(), $hour);
}   

I tried to do like this. But it's not solved, cause if I return a collection of forms I can't do 'form' => $form->createView()so I can't render the forms...

Try to pack all your form views in array

$billedHours = array();
$forms = array();
foreach($hours as $hour) {
    $billedHours[] = new BilledHour();
    $forms[] = $this->container->get('form.factory')->create(new BillMandateForm(), $hour);
}

Then, create array of rendered form views

$formsToRender = array();
foreach($forms as $form) {
    $formsToRender[] = $form->createView();
}

Then, pass this array to Twig:

...
'forms' => $formsToRender
...

And finally in Twig render each of form views from array:

{% for form in forms %}
    {{ form_row(form.id) }} {# or form_widget(form) if you want to render whole from instead of some fields #}
{% endfor %}

I hope this helps ;)