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如何单独显示 sfWidgetFormChoice 的单选按钮？

发布于 2024-10-19 19:39:01 字数 212 浏览 6 评论 0原文

我想以这种方式呈现 symfony 表单：

form with radio Button

我的问题涉及单选按钮小部件：我不不知道如何单独呈现每个选择，以便在这些单选按钮之间显示其他字段。

有没有办法用 symfony 形式来实现这一点？

谢谢！

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入怼 2024-10-26 19:39:01

Symfony 让这件事变得有点困难。您想要一个可从视图调用的 renderChoice( $value) 方法，但这需要更改或扩展 sfFormField。

更改它不是面向未来的，扩展它还需要您更改一些 symfony 变量，以便您视图中可访问的字段是这个新类的实例。我不知道这个选项是否存在。

相反，我选择将 sfWidgetFormSelectRadio 扩展为以下非常简单的类，该类扩展了 formatChoices。它将检查您是否只要求一种选项。如果是，它会渲染该标签并返回它，否则它会通过 parent:: 正常渲染。

这可以让您从视图中调用：$form['field']->render(array('only_choice'=> $value))
其中 $value 是要呈现的单选选项的索引：

<?php

/**
 * sfWidgetFormSelectRadioSingleable lets you render just one option at a time.
 *
 * @package    symfony
 * @subpackage widget
 * @author     Fabien Potencier <[email protected]>
 * @version    SVN: $Id: sfWidgetFormSelectRadio.class.php 27738 2010-02-08 15:07:33Z Kris.Wallsmith $
 */
class sfWidgetFormSelectRadioSingleable extends sfWidgetFormSelectRadio
{
  public function formatChoices($name, $value, $choices, $attributes)
  {
    $onlyChoice = (!empty($attributes['only_choice'])) ? $attributes['only_choice'] : false; unset($attributes['only_choice']);

    if($onlyChoice)
    {
      if(!isset($choices[$onlyChoice]))
          throw new Exception("Option '$onlyChoice' doesn't exist.");

      $key    = $onlyChoice;
      $option = $choices[$key];
      $baseAttributes = array(
        'name'  => substr($name, 0, -2),
        'type'  => 'radio',
        'value' => self::escapeOnce($key),
        'id'    => $id = $this->generateId($name, self::escapeOnce($key)),
      );

      if (strval($key) == strval($value === false ? 0 : $value))
      {
        $baseAttributes['checked'] = 'checked';
      }

      return $this->renderTag('input', array_merge($baseAttributes, $attributes));
    }
    else
    {
      return parent::formatChoices($name, $value, $choices, $attributes);
    }
  }
}

代码很尴尬，但在实践中很容易使用，并且将来不会中断。

Symfony makes this a little difficult to do. You'd like a renderChoice( $value) method that's callable from the view, but that would require changing or extending sfFormField.

Changing it isn't future proof, and extending it would also require you to change some symfony variable so the fields accessible in your view are instances of this new class. I don't know if that option exists.

Instead, I opted to extend sfWidgetFormSelectRadio into the following very simple class which extends formatChoices. It will check if you're asking for only one option. If you are, it renders that tag and returns it, otherwise it renders normally via parent::.

This lets you call from your view: $form['field']->render(array('only_choice'=> $value))
where $value is the index of the radio option you want to render:

<?php

/**
 * sfWidgetFormSelectRadioSingleable lets you render just one option at a time.
 *
 * @package    symfony
 * @subpackage widget
 * @author     Fabien Potencier <[email protected]>
 * @version    SVN: $Id: sfWidgetFormSelectRadio.class.php 27738 2010-02-08 15:07:33Z Kris.Wallsmith $
 */
class sfWidgetFormSelectRadioSingleable extends sfWidgetFormSelectRadio
{
  public function formatChoices($name, $value, $choices, $attributes)
  {
    $onlyChoice = (!empty($attributes['only_choice'])) ? $attributes['only_choice'] : false; unset($attributes['only_choice']);

    if($onlyChoice)
    {
      if(!isset($choices[$onlyChoice]))
          throw new Exception("Option '$onlyChoice' doesn't exist.");

      $key    = $onlyChoice;
      $option = $choices[$key];
      $baseAttributes = array(
        'name'  => substr($name, 0, -2),
        'type'  => 'radio',
        'value' => self::escapeOnce($key),
        'id'    => $id = $this->generateId($name, self::escapeOnce($key)),
      );

      if (strval($key) == strval($value === false ? 0 : $value))
      {
        $baseAttributes['checked'] = 'checked';
      }

      return $this->renderTag('input', array_merge($baseAttributes, $attributes));
    }
    else
    {
      return parent::formatChoices($name, $value, $choices, $attributes);
    }
  }
}

Awkward code, but easy enough to use in practice and it won't break in the future.

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