我正在尝试创建一个包含嵌套集合的表单。 我不知道如何处理JS部分来显示子集合。有谁知道我该怎么做？
以下是我的表格代码：
class ParentFormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('case', 'choice', array(
'choices' => array(
'case1' => 'case1',
'case2' => 'case2',
'case3' => 'case3',
)))
->add ('subForm1', 'collection', array (
'type' => new Sub1FormType(),
'allow_add' => true,
'allow_delete' => true,
'by_reference' => false,
'prototype' => true,
))
;
$builder->add('save',"submit") ;
}
public function setDefaultOptions(OptionsResolverInterface $resolver) {
}
public function getName() {
return 'formtestparenttype';
}
}
class Sub1FormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('fieldSub1',"text" )
->add ('childForm1', 'collection', array (
'type' => new Sub2FormType,
'allow_add' => true,
'allow_delete' => true,
'by_reference' => false,
'prototype' => true,
))
;
}
public function setDefaultOptions(OptionsResolverInterface $resolver) {
}
public function getName() {
return 'formtestsub1type';
}
}
class Sub2FormType extends AbstractType
{
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder
->add('fieldSub2',"text" )
;
}
public function setDefaultOptions(OptionsResolverInterface $resolver) {
}
public function getName() {
return 'formtesttype';
}
}
控制器：
$form = $this->createForm(new ParentFormType() ) ;
return $this->render('MyBundle:Test:test.html.twig', array(
'form' => $form->createView()
));
在这里; twig + js部分：
{% extends '::base.html.twig' %}
{% block content %}
{{ form_start(form) }}
<h3>Tags</h3>
<ul class="collectionHolder" data-prototype="{{ form_widget(form.subForm1.vars.prototype)|e }}">
{# iterate over each existing tag and render its only field: name #}
{% for subForm1 in form.subForm1 %}
<li>{{ form_row(subForm1) }} </li>
<ul class="collectionHolder" data-prototype="{{ form_widget(subForm2.vars.prototype)|e }}">
{%for subForm2 in subForm1.subForm2 %}
<li>{{ form_row(subForm2) }}</li>
{% endfor %}
{% endfor %}
</ul>
{{ form_end(form) }}
<script>
var $collectionHolder;
// setup an "add a tag" linkd
var $addTagLink = $('<a href="#" class="add_tag_link">Add</a>');
var $newLinkLi = $('<li></li>').append($addTagLink);
jQuery(document).ready(function() {
function addTagForm($collectionHolder, $newLinkLi)
{
// Get the data-prototype explained earlier
var prototype = $collectionHolder.data('prototype');
// get the new index
var index = $collectionHolder.data('index');
// Replace '__name__' in the prototype's HTML to
// instead be a number based on how many items we have
var newForm = prototype.replace(/__name__/g, index);
// increase the index with one for the next item
$collectionHolder.data('index', index + 1);
// Display the form in the page in an li, before the "Add a tag" link li
var $newFormLi = $('<li></li>').append(newForm);
$newLinkLi.before($newFormLi);
}
$collectionHolder = $('.collectionHolder');
$collectionHolder.append($newLinkLi);
// count the current form inputs we have (e.g. 2), use that as the new
// index when inserting a new item (e.g. 2)
$collectionHolder.data('index', $collectionHolder.find(':input').length);
$addTagLink.on('click', function(e) {
e.preventDefault();
addTagForm($collectionHolder, $newLinkLi);
});
});
</script>
{% endblock content %}
答案 0 :(得分：4)
你的问题是没有编写示例javascript来同时处理多个集合。
我写了一个单独的javascript文件，我在处理这些表单集时总是包含这个文件：
// js/form.collection.js
function FormCollection(div_id)
{
// keep reference to self in all child functions
var self=this;
self.construct = function () {
// set some shortcuts
self.div = $('#'+div_id);
self.div.data('index', self.div.find(':input').length);
// add delete link to existing children
self.div.children().each(function() {
self.addDeleteLink($(this));
});
// add click event to the Add new button
self.div.next().on('click', function(e) {
// prevent the link from creating a "#" on the URL
e.preventDefault();
// add a new tag form (see next code block)
self.addNew();
});
};
/**
* onClick event handler -- adds a new input
*/
self.addNew = function () {
// Get the data-prototype explained earlier
var prototype = self.div.data('prototype');
// get the new index
var index = self.div.data('index');
// Replace '__name__' in the prototype's HTML to
// instead be a number based on how many items we have
var newForm = prototype.replace(/__name__/g, index);
// increase the index with one for the next item
self.div.data('index', index + 1);
// Display the form in the page in an li, before the "Add a tag" link li
self.div.append($(newForm));
// add a delete link to the new form
self.addDeleteLink( $(self.div.children(':last-child')[0]) );
// not a very nice intergration.. but when creating stuff that has help icons,
// the popovers will not automatically be instantiated
//initHelpPopovers();
return $(newForm);
};
/**
* add Delete icon after input
* @param Element row
*/
self.addDeleteLink = function (row) {
var $removeFormA = $('<a href="#" class="btn btn-danger" tabindex="-1"><i class="entypo-trash"></i></a>');
$(row).find('select').after($removeFormA);
row.append($removeFormA);
$removeFormA.on('click', function(e) {
// prevent the link from creating a "#" on the URL
e.preventDefault();
// remove the li for the tag form
row.remove();
});
};
self.construct();
}
在所需的模板中，我只需按id定位集合，然后通过id实例化FormCollection，例如：
{% extends '::base.html.twig' %}
{% block content %}
{{ form_start(form) }}
<h3>Tags</h3>
<ul id="col-subform1" data-prototype="{{ form_widget(form.subForm1.vars.prototype)|e }}">
{# iterate over each existing tag and render its only field: name #}
{% for subForm1 in form.subForm1 %}
<li>{{ form_row(subForm1) }} </li>
<ul id="col-subform2" data-prototype="{{ form_widget(subForm2.vars.prototype)|e }}">
{%for subForm2 in subForm1.subForm2 %}
<li>{{ form_row(subForm2) }}</li>
{% endfor %}
{% endfor %}
</ul>
{{ form_end(form) }}
<script type="text/javascript" src="/js/form.collection.js"></script>
<script type="text/javascript">
new FormCollection('col-subform1');
new FormCollection('col-subform2');
</script>