我希望用来自自定义查询的值填充 symfony2 中的选择框.我尽量简化.
I am looking to populate a choice box in symfony2 with values from a custom query. I have tried to simplify as much as possible.
控制器
class PageController extends Controller
{
public function indexAction()
{
$fields = $this->get('fields');
$countries = $fields->getCountries(); // returns a array of countries e.g. array('UK', 'France', 'etc')
$routeSetup = new RouteSetup(); // this is the entity
$routeSetup->setCountries($countries); // sets the array of countries
$chooseRouteForm = $this->createForm(new ChooseRouteForm(), $routeSetup);
return $this->render('ExampleBundle:Page:index.html.twig', array(
'form' => $chooseRouteForm->createView()
));
}
}
选择路由表单
class ChooseRouteForm extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
// errors... ideally I want this to fetch the items from the $routeSetup object
$builder->add('countries', 'choice', array(
'choices' => $this->routeSetup->getCountries()
));
}
public function getName()
{
return 'choose_route';
}
}
您可以使用...将选项传递给您的表单
You could pass the choices to your form using..
$chooseRouteForm = $this->createForm(new ChooseRouteForm($routeSetup), $routeSetup);
然后在您的表单中..
private $countries;
public function __construct(RouteSetup $routeSetup)
{
$this->countries = $routeSetup->getCountries();
}
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('countries', 'choice', array(
'choices' => $this->countries,
));
}
针对 2.8+ 进行更新(和改进)
首先,除非将国家/地区存储在数据库中,否则您实际上并不需要将它们作为路线对象的一部分传入.
Firstly you don't really need to pass in the countries as part of the route object unless they are going to be stored in the DB.
如果将可用国家/地区存储在数据库中,那么您可以使用事件侦听器.如果没有(或者如果您不想使用侦听器),您可以在选项区域中添加国家/地区.
If storing the available countries in the DB then you can use an event listener. If not (or if you don't want to use a listener) you can add the countries in the options area.
使用选项
在控制器中..
$chooseRouteForm = $this->createForm(
ChooseRouteForm::class,
// Or the full class name if using < php 5.5
$routeSetup,
array('countries' => $fields->getCountries())
);
在你的表格中..
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('countries', 'choice', array(
'choices' => $options['countries'],
));
}
public function configureOptions(OptionsResolver $resolver)
{
$resolver
->setDefault('countries', null)
->setRequired('countries')
->setAllowedTypes('countries', array('array'))
;
}
使用监听器(如果模型中的国家/地区数组可用)
Using A Listener (If the countries array is available in the model)
在控制器中..
$chooseRouteForm = $this->createForm(
ChooseRouteForm::class,
// Or the full class name if using < php 5.5
$routeSetup
);
在你的表格中..
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->addEventListener(FormEvents::PRE_SET_DATA, function(FormEvent $event) {
$form = $event->getForm();
/** @var RouteSetup $routeSetup */
$routeSetup = $event->getData();
if (null === $routeSetup) {
throw new Exception('RouteSetup must be injected into form');
}
$form
->add('countries', 'choice', array(
'choices' => $routeSetup->getCountries(),
))
;
})
;
}
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