Symfony 4-如何在不构建表单的情况下添加csrf令牌? [英] Symfony 4 - how to add csrf token without building form?

问题描述

我在这里阅读教程

https://symfony.com/doc/current/form/csrf_protection.html

如何添加csrf令牌.它说要使用

how to add csrf token. It says to use

form_end()

模板中的

.但这不起作用，并给出错误:

in the template. But this is not working, gives error:

类型错误:函数参数太少Symfony \ Component \ Form \ FormRenderer :: renderBlock()，传入的0E:\ projektai \ phpprojektai \ htdocs \ mokomieji \ symfony_4_demo \ var \ cache \ dev \ twig \ bb \ bb \ bb2248f7be504240fcc2ab43dabf593090ebc4c897ce72b1a979082d62914b47.php在第48行，预计至少2个

Type error: Too few arguments to function Symfony\Component\Form\FormRenderer::renderBlock(), 0 passed in E:\projektai\php projektai\htdocs\mokomieji\symfony_4_demo\var\cache\dev\twig\bb\bb2248f7be504240fcc2ab43dabf593090ebc4c897ce72b1a979082d62914b47.php on line 48 and at least 2 expected

这是显示如何解决的答案，但仅当您已构建表单对象时:

Here is answer which shows how to fix but it is only when you have form object built:

Symfony类型错误:函数FormRenderer的参数太少::renderBlock()

如何在没有表单对象的情况下执行此操作?这是从登录文档页面登录:

How to do this without having form object? Here is login from login documentation page:

{% if error %}
    <div>{{ error.messageKey|trans(error.messageData, 'security') }}</div>
{% endif %}

<form action="{{ path('login') }}" method="post">
    <label for="username">Username:</label>
    <input type="text" id="username" name="_username" value="{{ last_username }}" />

    <label for="password">Password:</label>
    <input type="password" id="password" name="_password" />

    <button type="submit">Login</button>

{{  form_end() }}

推荐答案

您可以按照文档

You can use the helper twig function csrf_token as described in the doc here, as example:

 <input type="hidden" name="_csrf_token"
        value="{{ csrf_token('authenticate') }}"
    >

有关此答案的更多帮助.

更新:

其他策略:从控制器传递:

Other strategy: pass from controller:

    $tokenProvider = $this->container->get('security.csrf.token_manager');
    $token = $tokenProvider->getToken('example')->getValue();

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