我尝试使用具有自动完成功能的野外城市。我使用 twitter bootstrap 样式和函数 typeahead,但我不知道我的工作是否好。
在我的示例中,我有 2 个实体:Person 和 City(法国约有 37,000 个公社)。
Person 实体与 City 字段 Birthplace 具有 OneToMany 关系。
因此,我创建了一个隐藏字段类型 city_typeahead 来添加一个 DataTransformer“CityToIdTransformer”,以从表单发送的 City id 中持久化一个对象。
在那之前,自动完成功能非常适合创建和编辑。
但是,在编辑表单中,我想在自动完成字段中显示在我的隐藏字段中注册的城市名称。这就是我卡住的地方。
我想与听众一起尝试,但我不确定要应用的解决方案。如果有人可以指导我,我将不胜感激。
谢谢你。
编辑: 我对自动完成字段国家进行了类似的测试,经过几次测试后我到达了。我创建了一个侦听器来检查隐藏字段是否有值,并从中获取名称并加载我的字段自动完成。我不知道该方法是否干净,但它有效,我的自动完成字段现在在编辑表单上显示国家名称。
表单类型:
<?php
namespace Myapp\PersonBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Myapp\PersonBundle\Form\EventListener\AddNationalitySearchSubscriber;
class PersonType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('firstname')
->add('lastname')
->add('nationality', 'country_typeahead', array(
'attr' => array('class' => 'country-toset'),
'required' => false))
->add('nationality_search','text', array(
'attr' => array(
'class' => 'country-tosearch',
'name' => 'term',
'autocomplete' => true,
'required' => false,
'mapped' => false));
$builder->addEventSubscriber(new AddNationalitySearchSubscriber());
}
public function setDefaultOptions(OptionsResolverInterface $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'Myapp\PersonBundle\Entity\Person'
));
}
public function getName()
{
return 'person_person_type';
}
}
视图中的脚本js:
<script type="text/javascript">
$('.country-tosearch').typeahead({
source: function(query, process){
$.ajax({
url: "/ajax/country",
type: "post",
data: "term="+query,
dataType: "json",
async: false,
success: function(data){
countries = []
mapped = {}
$.map(data, function(country, i){
mapped[country.name] = country;
countries.push(country.name);
});
process(countries);
}
})
},
minLength: 3,
property: 'enriched',
items:15,
updater: function (obj) {
if(mapped[obj].id){
$('.country-toset').val(mapped[obj].id);
}
return mapped[obj].name;
}
});
</script>
数据转换器:
<?php
namespace Myapp\PersonBundle\Form\DataTransformer;
use Symfony\Component\Form\DataTransformerInterface;
use Symfony\Component\Form\Exception\TransformationFailedException;
use Doctrine\Common\Persistence\ObjectManager;
use Myapp\GeoBundle\Entity\Country;
class CountryToIdTransformer implements DataTransformerInterface
{
/**
* @var ObjectManager
*/
private $om;
/**
* @param ObjectManager $om
*/
public function __construct(ObjectManager $om)
{
$this->om = $om;
}
/**
* Transforms an object (country) to a string (id).
*
* @param Country|null $country
* @return string
*/
public function transform($country)
{
if (null === $country) {
return "";
}
return $country->getId();
}
/**
* Transforms a string (id) to an object (country).
*
* @param string $id
* @return Country|null
* @throws TransformationFailedException if object (country) is not found.
*/
public function reverseTransform($id)
{
if (!$id) {
return null;
}
$country = $this->om
->getRepository('MyappGeoBundle:Country')->findOneBy(array('id' => $id))
;
if (null === $country) {
throw new TransformationFailedException(sprintf(
'A country with id "%s" does not exist!',
$id
));
}
return $country;
}
}
听众:
<?php
namespace Myapp\PersonBundle\Form\EventListener;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
class AddNationalitySearchSubscriber implements EventSubscriberInterface
{
public static function getSubscribedEvents()
{
return array(FormEvents::PRE_SET_DATA => 'preSetData');
}
public function preSetData(FormEvent $event)
{
$country = '';
$data = $event->getData();
$form = $event->getForm();
if (null === $data) {
return;
}
if ($data->getNationality()) {
$country = $data->getNationality();
}
$form->add('nationality_search','text', array(
'attr' => array(
'class' => 'country-tosearch',
'name' => 'term',
'autocomplete' => true,
'data' => $country,
'required' => false,
'mapped' => false));
}
}