【发布时间】：2016-12-07 10:49:29
【问题描述】：
我需要一个带有 3 个动态选择框（选择类型）的表单，在表单提交后，这些选择框在数据库中保存为序列化数组。
我最终设法让它工作，但现在我在编辑项目时努力用数据库值填充下拉列表。
项目实体
<?php
namespace AppBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
* @ORM\Table(name="projects")
*/
class Projects
{
/**
* @ORM\Column(type="string", length=255)
*/
protected $projectName;
/**
* @ORM\Column(type="array")
*/
protected $frequency;
/**
* No database fields for these.
* They are used just to populate the form fileds
* and the serialized values are stored in the frequency field
*/
protected $update;
protected $every;
protected $on;
/*
* Project Name
*/
public function getProjectName()
{
return $this->projectName;
}
public function setProjectName($projectName)
{
$this->projectName = $projectName;
}
/*
* Frequency
*/
public function getFrequency()
{
return $this->frequency;
}
public function setFrequency($frequency)
{
$this->frequency = $frequency;
}
/*
* Update
*/
public function getUpdate()
{
return $this->update;
}
public function setUpdate($update)
{
$this->update = $update;
}
/*
* Every
*/
public function getEvery()
{
return $this->every;
}
public function setEvery($every)
{
$this->every = $every;
}
/*
* On
*/
public function getOn()
{
return $this->on;
}
public function setOn($on)
{
$this->on = $on;
}
}
项目控制器
<?php
namespace AppBundle\Controller;
use AppBundle\Entity\Projects;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\ParamConverter;
/**
* Projects controller.
*/
class ProjectsController extends Controller
{
/**
* @Route("/projects/new", name="projects_new")
*/
public function newAction(Request $request)
{
$project = new Projects();
$form = $this->createForm('AppBundle\Form\ProjectsType', $project);
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid()) {
$em = $this->getDoctrine()->getManager();
// This is where the data get's saved in the frequency field
$frequency = array(
"update" => $project->getUpdate(),
"every" => $project->getEvery(),
"on" => $project->getOn()
);
$project->setFrequency($frequency);
$em->persist($project);
$em->flush($project);
return $this->redirectToRoute('projects_show', array('id' => $project->getId()));
}
return $this->render('projects/new.html.twig', array(
'project' => $project,
'form' => $form->createView(),
));
}
/**
* @Route("/projects/edit/{id}", name="projects_edit", requirements={"id": "\d+"})
* @ParamConverter("id", class="AppBundle:Projects")
*/
public function editAction(Request $request, Projects $project)
{
$editForm = $this->createForm('AppBundle\Form\ProjectsType', $project);
$editForm->handleRequest($request);
if ($editForm->isSubmitted() && $editForm->isValid()) {
// This is where the data get's saved in the frequency field
$frequency = array(
"update" => $project->getUpdate(),
"every" => $project->getEvery(),
"on" => $project->getOn()
);
$project->setFrequency($frequency);
$this->getDoctrine()->getManager()->flush();
return $this->redirectToRoute('projects_edit', array('id' => $project->getId()));
}
return $this->render('projects/edit.html.twig', array(
'project' => $project,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
));
}
}
ProjectsType 表单
<?php
namespace AppBundle\Form;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
use Symfony\Component\Form\FormEvent;
use Symfony\Component\Form\FormEvents;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormView;
use AppBundle\Entity\Projects;
class ProjectsType extends AbstractType
{
private function setUpdateChoice(Projects $project)
{
return $project->getFrequency()['update'];
}
/**
* {@inheritdoc}
*/
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->add('projectName', null, array());
$builder->add('update', ChoiceType::class, array(
'label' => 'Update',
'attr' => array(
'class' => 'update_selector',
),
'choices' => array(
'Daily' => 'Daily',
'Weekly' => 'Weekly',
'Monthly' => 'Monthly'
),
'data' => $this->setUpdateChoice($builder->getData())
)
);
$addFrequencyEveryField = function (FormInterface $form, $update_val) {
$choices = array();
switch ($update_val) {
case 'Daily':
$choices = array('1' => '1', '2' => '2');
break;
case 'Weekly':
$choices = array('Week' => 'Week', '2 Weeks' => '2 Weeks');
break;
case 'Monthly':
$choices = array('Month' => 'Month', '2 Months' => '2 Months');
break;
default:
$choices = array();
break;
}
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($addFrequencyEveryField) {
$update = $event->getData()->getUpdate();
$update_val = $update ? $update->getUpdate() : null;
$addFrequencyEveryField($event->getForm(), $update_val);
}
);
$builder->addEventListener(
FormEvents::PRE_SUBMIT,
function (FormEvent $event) use ($addFrequencyEveryField) {
$data = $event->getData();
$update_val = array_key_exists('update', $data) ? $data['update'] : null;
$addFrequencyEveryField($event->getForm(), $update_val);
}
);
$addFrequencyOnField = function (FormInterface $form, $every_val) {
$choicesOn = array();
switch ($every_val) {
case 'Week':
$choicesOn = array(
'Monday' => 'Monday',
'Tuesday' => 'Tuesday',
'Wednesday' => 'Wednesday',
'Thursday' => 'Thursday',
'Friday' => 'Friday',
'Saturday' => 'Saturday',
'Sunday' => 'Sunday',
);
break;
case 'Month':
$choicesOn = array(
'1' => '1',
'2' => '2',
'3' => '3',
'4' => '4',
'5' => '5',
'6' => '6',
'7' => '7',
);
break;
default:
$choicesOn = array();
break;
}
$form->add('on', ChoiceType::class, array(
'choices' => $choicesOn,
));
};
$builder->addEventListener(
FormEvents::PRE_SET_DATA,
function (FormEvent $event) use ($addFrequencyOnField) {
$every = $event->getData()->getEvery();
$every_val = $every ? $every->getEvery() : null;
$addFrequencyOnField($event->getForm(), $every_val);
}
);
$builder->addEventListener(
FormEvents::PRE_SUBMIT,
function (FormEvent $event) use ($addFrequencyOnField) {
$data = $event->getData();
$every_val = array_key_exists('every', $data) ? $data['every'] : null;
$addFrequencyOnField($event->getForm(), $every_val);
}
);
}
/**
* {@inheritdoc}
*/
public function configureOptions(OptionsResolver $resolver)
{
$resolver->setDefaults(array(
'data_class' => 'AppBundle\Entity\Projects'
));
}
/**
* {@inheritdoc}
*/
public function getBlockPrefix()
{
return 'appbundle_projects';
}
}
最后是包含 ajax 的 Edit Template
{% extends 'base.html.twig' %}
{% block body %}
{% block content %}
<h1>Edit Project</h1>
{{ form_start(edit_form) }}
{{ form_widget(edit_form) }}
<input type="submit" value="Edit" />
{{ form_end(edit_form) }}
{% endblock content %}
{% block javascripts %}
<script>
var $update = $('#appbundle_projects_update');
var $every = $('#appbundle_projects_every');
var $on_selector = $('#appbundle_projects_on');
// When update gets selected ...
$update.change(function() {
$every.html('');
// ... retrieve the corresponding form.
var $form = $(this).closest('form');
// Simulate form data, but only include the selected update value.
var data = {};
data[$update.attr('name')] = $update.val();
// Submit data via AJAX to the form's action path.
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
var options = $(html).find('#appbundle_projects_every option');
for (var i=0, total = options.length; i < total; i++) {
$every.append(options[i]);
}
}
});
});
// // When every gets selected ...
$every.change(function() {
$on_selector.html('');
// ... retrieve the corresponding form.
var $form = $(this).closest('form');
// Simulate form data, but only include the selected every value.
var data = {};
data[$every.attr('name')] = $every.val();
// Submit data via AJAX to the form's action path.
$.ajax({
url : $form.attr('action'),
type: $form.attr('method'),
data : data,
success: function(html) {
var options = $(html).find('#appbundle_projects_on option');
for (var i=0, total = options.length; i < total; i++) {
$on_selector.append(options[i]);
}
}
});
});
</script>
{% endblock javascripts %}
{% endblock %}
我能够使用 setUpdateChoice() 在更新字段中设置所选值，并将返回值分配给 ProjectsType 中的 ChoiceType::class data。但是，这对every select 或另一个返回null 的PRE_SET_DATA 侦听器没有任何影响。
我也尝试了与上面相同的其他两个字段，但是在侦听器中呈现字段会导致错误no such field（或类似的东西）
我还尝试从控制器中的频率获取值，并在渲染表单之前使用setUpdate()、setEvery() 和setOn()，导致You can't modify a form that has already been submitted.
这是编辑项目时表单当前呈现的方式：
我需要像这样填充它：
任何关于我如何解决这个问题的想法/建议/示例将不胜感激。
谢谢
PS。如果我遗漏了什么，请告诉我，我会更新我的问题。
更新
感谢Constantin的回答，我已经设法在控制器中设置字段数据，执行以下操作：
public function editAction(Request $request, Projects $project)
{
$project->setUpdate($project->getFrequency()['update']);
$project->setEvery($project->getFrequency()['every']);
$project->setOn($project->getFrequency()['on']);
$editForm = $this->createForm('AppBundle\Form\ProjectsType', $project);
$editForm->handleRequest($request);
if ($editForm->isSubmitted() && $editForm->isValid()) {
$frequency = array(
"update" => $project->getUpdate(),
"every" => $project->getEvery(),
"on" => $project->getOn()
);
$project->setFrequency($frequency);
$this->getDoctrine()->getManager()->flush();
return $this->redirectToRoute('projects_edit', array('id' => $project->getId()));
}
return $this->render('projects/edit.html.twig', array(
'project' => $project,
'edit_form' => $editForm->createView(),
'delete_form' => $deleteForm->createView(),
));
}
【问题讨论】：
标签： php forms symfony symfony-forms