Question

我正在Silex中构建一个表单，我想使用html5占位符属性，而不是只设置输入字段的预填充数据。

我正在尝试使用以下代码进行设置：

$form = $app['form.factory']->createBuilder('form')
    ->add('email','email', array(
        'attr' => array('placeholder' => 'Email'),
        'label' => 'Email'))
    ->add('password','password', array(
        'attr' => array('placeholder' => 'Password'),
        'label' => 'Password'))
    ->getForm();

但这似乎不起作用。将以下代码放入我的twig模板后：

<form action="#" method="post">
    {{ form_widget(form) }}

    <input type="submit" name="submit" />
</form>

呈现以下HTML：

<form action="#" method="post">
<div id="form">
    <div>
        <label for="form_email" class="required"></label>
        <input type="email" id="form_email" name="form[email]" required="required" placeholder="">
    </div>
    <div>
        <label for="form_password" class="required"></label>
        <input type="password" id="form_password" name="form[password]" required="required" placeholder="">
    </div>
    <input type="hidden" id="form__token" name="form[_token]" value="03398bf6d8670d8de7a3800d9b49c91d21affbc3">
</div>
<input type="submit" name="submit">
</form>

如何在Silex中实现占位符的使用？

编辑：来调用我的模板我使用以下代码：

return $app['twig']->render('index.twig',array(
    'form'=> $form->createView()
));

Answer 1

您的代码似乎对我很好。尝试运行下面的代码。将它放在一个新目录中，运行composer install，然后运行php -S localhost:8000 app.php以使用PHP开发服务器（如果你有PHP 5.4或更高版本）。这应该尽可能地复制我的设置。如果这样有效，我们就可以开始弄清楚它为什么不适合你了。

composer.json

{
  "require": {
    "silex/silex": "~1.1",
    "symfony/form": "~2.3",
    "symfony/twig-bridge": "~2.3",
    "twig/twig": ">=1.8,<2.0-dev",
    "symfony/translation": "~2.3"
  }
}

app.php

<?php 

require_once __DIR__.'/vendor/autoload.php'; 

$app = new Silex\Application(); 

$app['debug'] = true;

$app->register(new Silex\Provider\FormServiceProvider());

$app->register(new Silex\Provider\TwigServiceProvider(), array(
  'twig.templates' => array(
    'form' => '<form action="#" method="post"> {{ form_widget(form) }} <input type="submit" name="submit" /> </form>'
  )
));

$app->register(new Silex\Provider\TranslationServiceProvider(), array(
  'translator.messages' => array(),
));

$app->get('/', function() use($app) { 
  $form = $app['form.factory']->createBuilder('form')
    ->add('email','email', array(
        'attr' => array('placeholder' => 'Email'),
        'label' => 'Email'))
    ->add('password','password', array(
        'attr' => array('placeholder' => 'Password'),
        'label' => 'Password'))
    ->getForm();

  return $app['twig']->render('form', array('form'=> $form->createView()));
}); 

$app->run();

结果

<form action="#" method="post"> 
  <div id="form">
    <div>
      <label for="form_email" class="required">Email</label>
      <input type="email" id="form_email" name="form[email]" required="required" placeholder="Email" />
    </div>

    <div>
      <label for="form_password" class="required">Password</label>
      <input type="password" id="form_password" name="form[password]" required="required" placeholder="Password" />
    </div>

    <input type="hidden" id="form__token" name="form[_token]" value="ba96e88afe7156803c70e41149a35d28edf80977" />
  </div>
  <input type="submit" name="submit" /> 
</form>

Answer 2

我认为您必须手动构建表单：

<form action="#" method="post">
    {{ form_errors(form) }}

    {{ form_errors(form.email) }}
    {{ form_label(form.email) }}
    {{ form_widget(form.email, {'attr': {'placeholder': 'Email'} }) }}

    {{ form_errors(form.password) }}
    {{ form_label(form.password) }}
    {{ form_widget(form.password, {'attr': {'placeholder': 'Password'} }) }}

    {{ form_rest(form) }}
    <input type="submit" name="submit" />
</form>

在Silex中设置占位符属性

2 个答案:

composer.json

app.php

结果