Symfony 2 - 删除表单和 CSRF 令牌 [英] Symfony 2 - Delete Forms and CSRF Token

问题描述

我有一个来自数据库的条目列表.我想在每一行的末尾都有一个删除按钮"，这样用户就不必先去编辑/显示页面来删除条目.

I have a List of entries coming from a database. I would like to have a "Delete-Button" at the end of every row, so that the user won't have to first go to the edit/show page to delete the entry.

我尝试使用 csrf 令牌创建一个隐藏的输入字段，如下所示:

I tried creating a hidden input field with the csrf token like so:

return $this->createFormBuilder()
   ->getForm()
;

这将输出:

<div id="form">
   <input type="hidden" id="form__token" name="form[_token]" value="6c98ebfa9df07.....">
</div>

我将表单的其余部分放在树枝模板中，以便每个表单根据条目的 id 都有自己的操作路径.

The rest of the Form i put around in the twig template so that every form has its own action path according the the id of the entry.

不幸的是，twig 模板中只有第一个

unfortunately in the twig template only the first

{{ form_widget(delete_form) }}

将被渲染.

如何更频繁地使用此隐藏字段?或者有没有办法以不同的方式做这整件事?

How can i use this hidden field more often? OR is there any way to do this whole thing differently?

感谢您的帮助

public function indexAction()
    {
        $em = $this->getDoctrine()->getManager();

        $deleteForm = $this->createDeleteForms();

        $entities = $em->getRepository('IntranetServicesBundle:Laender')->findAll();

        return $this->render('IntranetServicesBundle:Laender:index.html.twig', array(
            'entities' => $entities,
            'delete_form' => $deleteForm->createView(),
        ));
    }


private function createDeleteForms()
{
    return $this->createFormBuilder()
        ->add('id', 'hidden')
        ->getForm()
    ;
}

推荐答案

@Lighthart 的回答让我找到了正确的答案:

The answer of @Lighthart led me to the correct answer:

在您的控制器中生成一个表单视图数组并将其交给视图:

In your controller generate an array of form views and had it over to the view:

public function indexAction()
{
    $em = $this->getDoctrine()->getManager();

    $entities = $em->getRepository('AppBundle:Entity')->findAll();

    $delete_forms = array_map(
        function ($element) {
            return $this->createDeleteForm($element->getId())->createView();
        }
        , $entities
    );

    return $this->render('AppBundle:Entity:index.html.twig', array(
        'entities' => $entities,
        'delete_forms' => $delete_forms
    ));
}

现在您必须在您的视图中访问它.因此，您可以使用表单函数和特殊的循环变量:

Now you have to access this in your view. Therefore you can use the form functions and the special loop variables:

{% extends '::base.html.twig' %}

{% block body %}
    {% for entity in entities %}
        {# Access the delete form for this entity using the loop index ... #}
        {% set delete_form = delete_forms[loop.index0] %}

        {# ... and display the form using the form tags. #}
        {{ form_start(delete_form) }}
            <input type="submit" value="Delete" />
        {{ form_end(delete_form) }}
    {% endfor %}
{% endblock %}

就是这样.

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