Symfony2一种形式的同一类的多个实体 [英] Symfony2 multiple Entities of same class in one Form

问题描述

我想呈现一个具有多个相同类的实体的表单。
我将显示两个字段，Price（type = text）和Enabled（type = checkbox）。

I want to render a form which has multiple Entities of same Class. I will display 2 fields, Price(type=text) and Enabled(type=checkbox).

我不知道我将拥有多少个字段这些实体，因此表单必须动态获取它们。

I don't know how many I will have of those entities, so form will have to get them dynamically.

我尝试执行以下操作

public function buildForm(FormBuilderInterface $builder, array $options)
{

        $builder
            ->add('price', 'text', array(
                'label' => 'Price',
                'required' => true
            ))
            ->add('enabled','checkbox',array(
                'label'     => 'Use this currency',

            ))
        ;    
}

public function setDefaultOptions(OptionsResolverInterface $resolver)
{
    $resolver->setDefaults(array(
        'data_class'        => 'Osiris\Entity\Pricing',
        'csrf_protection'   => false
    ));
}

public function getName()
{
    return 'pricingtype';
}

在我的控制器中，我创建了这样的表单：

And in my Controller I have created my form like this:

$pricingForm = $this->createFormBuilder($prices)
               ->add('items','collection',array(
                   'required' => false,
                   'prototype' => true,
                   'type'    => new PricingType(),
               ))
                ->getForm()
            ;

在我的树枝上，我这样做：

In my twig I do:

{% for price in form_pricing %}
    <h2>Price</h2>
    <div class="row">{{ form_widget(price) }}</div>
{% endfor %}

但是仅包含h2价格和带类的空div =行。我觉得自己已经到一半了，但我不知道该如何继续前进。
如果有人也知道如何在提交时获得字段，我将非常感谢。

However it comes only with h2 Prices and empty div with class=row. I feel like I am half way there, but I've no idea how to move on. If someone knows how to get fields on submit as well, I will really appreciate it.

推荐答案

我发现了解决方法，

在Controller中创建表单的方式是错误的！
我必须执行以下操作：

the way I was creating the form in Controller was wrong! I had to do the following:

$pricingForm = $this->createFormBuilder(array('prices'=>$prices))
                ->add('prices','collection',array(
                    'required'       => true,
                    'allow_add'      => true,
                    'type'           => new PricingType(),
               ))
                ->getForm()
            ;

在使用集合时必须 allow_add => true，否则将不将任何PricingType实体集合添加到表单中。

"allow_add => true" is necessary when working with collection, otherwise it will NOT add any of PricingType collection of entities to the form.

然后，因为表单是在控制器 $ this-> ; createFormBuilder（array（'prices'=> $ prices））， $ prices 数组必须作为具有相同数组键名的数组传递作为 -> add（'prices'，'collection'，array（...）中使用的那个，即'prices $ prices 是一个定价对象数组 array（0 => new Pricing（））。

Then, because the form is built inside the controller "$this->createFormBuilder(array('prices'=>$prices))" , $prices array must be passed as an array with array keyname same as the one used in "->add('prices','collection',array(...)" , which is 'prices' so Symfony will know what to bind where. $prices is an array of Pricing objects array(0 => new Pricing()).

在我的PricingType中，我有：

In my PricingType I have:

class PricingType extends AbstractType {

    public function buildForm(FormBuilderInterface $builder, array $options)
    {

        $builder
            ->add('price', 'text', array(
                'label' => false,
                'required' => true
            ))
            ->add('enabled','checkbox',array(
                'label'     => 'Use this currency',

            ))
        ;

    }

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'data_class'        =>  'XXX\XXX\Entity\Pricing',
            'csrf_protection'   => false
        ));
    }

    public function getName()
    {
        return 'pricingtype';
    }
}

在这里，我需要控制标签属性。我找不到方法（如果有人知道，请发布操作方法）。我重写了我的树枝模板，如下所示：

Here I need to have control over label attribute. I could not find the way for it( if anyone knows please post how to). I override my twig template as follows:

在顶部，我们需要下一行代码：

On the top we need next line of code:

    {% form_theme form_pricing _self %}

然后按如下所示覆盖行和小部件（这是调试的噩梦）：

Then override row and widget as follows (it was a nightmare to debug):

{% block _form_prices_entry_row %}
    {% spaceless %}
        {{ form_widget(form) }}
    {% endspaceless %}
{% endblock %}

{% block _form_prices_entry_widget %}
    {% spaceless %}

        {{ form_row(form.price, { 'label' : form.vars.value.getCurrency().getTitle() } ) }}
        {{ form_row(form.enabled) }}

    {% endspaceless %}
{% endblock %}

然后在正文中呈现如下表单元素：

In the body then, render form elements as follows:

{% for price in form_pricing.prices %}
                    <div class="price-row">{{ form_row(price) }}</div>
                {% endfor %}

我真的希望这对您有所帮助。调试尤其是树枝文件是一个真正的噩梦，这要归功于我聪明的同事。

I really hope this will help you guyz. It was a real nightmare to debug especially the twig file, I did it thanks to my clever colleague.

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