这是我经过一些研究后得出的结论，它似乎工作正常，但是在渲染时不再使用位置机制。我想知道这是否有问题。
<?php
class UcWidgetFormSchema extends sfWidgetFormSchema
{
/**
* An associative array with all the fieldsets
* <code>
* array(
* "fieldset1" => array("fieldName1", "fieldName2"),
* "fieldset2" => array("fieldName3", "fieldName4"),
* )
* </code>
*
* @var array
*/
private $fieldsets;
/**
* A fieldset-compatible constructor.
*
* @param mixed $fields Initial fields. Values can be given this way:
* <code>
* array(
* "fieldset1" => array(
* "field1" => $widget1,
* "field2" => $widget2
* )
* "fieldset1" => array(
* "field3" => $widget3,
* "field4" => $widget4,
* "field5" => $widget5
* )
* "message" => $widget6
* )
* </code>
* @param array $options An array of options
* @param array $attributes An array of default HTML attributes
* @param array $labels An array of HTML labels
* @param array $helps An array of help texts
*/
public function __construct($fields = null, $options = array(),
$attributes = array(), $labels = array(), $helps = array())
{
$this->addOption('name_format', '%s');
$this->addOption('form_formatter', null);
parent::__construct($options, $attributes);
if (is_array($fields))
{
$fieldsets = array();
foreach ($fields as $name => $value)
{
if (is_array($value))
{
$fieldsets[$name] = array_keys($value);
foreach ($value as $valueName=> $valueWidget)
{
$this[$valueName] = $valueWidget;
}
}
else
{
$this[$name] = $value;
}
}
$this->setFieldsets($fieldsets);
}
else if (null !== $fields)
{
throw new InvalidArgumentException('sfWidgetFormSchema constructor takes an array of sfWidget objects.');
}
$this->setLabels($labels);
$this->helps = $helps;
}
/**
* Setter for the fieldsets
*
* @param array $fieldsets an associative array
*
* @return null
*/
public function setFieldsets(array $fieldsets)
{
$fieldNames = array();
foreach ($fieldsets as $fieldset => $fieldsetFieldNames)
{
$fieldNames = array_merge($fieldNames, $fieldsetFieldNames);
}
$availableFieldsNames = array_keys($this->getFields());
if ($diff = array_diff(array_unique($fieldNames), $fieldNames))
{
throw new InvalidArgumentException(
'A field can only be used once in all fieldset. These do not: ' .
implode(', ', $diff));
}
if ($diff = array_diff($fieldNames, $availableFieldsNames))
{
throw new InvalidArgumentException(
'Widget schema does not include the following field(s): ' .
implode(', ', $diff));
}
$this->fieldsets = $fieldsets;
}
public function render($name, $values = array(), $attributes = array(), $errors = array())
{
if(!$this->getFormFormatter() instanceof FieldsettedFormFormatterInterface )
{
throw new LogicException('The formatter you are using must implement FieldsettedFormFormatterInterface');
}
if (null === $values)
{
$values = array();
}
if (!is_array($values) && !$values instanceof ArrayAccess)
{
throw new InvalidArgumentException('You must pass an array of values to render a widget schema');
}
$formFormat = $this->getFormFormatter();
$groups = array();
$hiddenRows = array();
$errorRows = array();
$lonelyFields = $this->getPositions();
$lonelyRows = array();
// render each field
foreach ($this->fieldsets as $fieldset => $fieldNames)
{
$rows = array();
foreach ($fieldNames as $name)
{
$lonelyFields = array_diff($lonelyFields, array($name));
$widget = $this[$name];
$value = isset($values[$name]) ? $values[$name] : null;
$error = isset($errors[$name]) ? $errors[$name] : array();
$widgetAttributes = isset($attributes[$name]) ? $attributes[$name] : array();
if ($widget instanceof sfWidgetForm && $widget->isHidden())
{
$hiddenRows[] = $this->renderField($name, $value, $widgetAttributes);
}
else
{
$field = $this->renderField($name, $value, $widgetAttributes, $error);
// don't add a label tag and errors if we embed a form schema
$label = $widget instanceof sfWidgetFormSchema ?
$this->getFormFormatter()->generateLabelName($name) :
$this->getFormFormatter()->generateLabel($name);
$error = $widget instanceof sfWidgetFormSchema ? array() : $error;
$rows[] = $formFormat->formatRow($label, $field, $error,
$this->getHelp($name));
}
$groups[$fieldset] = $rows;
}
}
foreach ($lonelyFields as $name)
{
$widget = $this[$name];
$value = isset($values[$name]) ? $values[$name] : null;
$error = isset($errors[$name]) ? $errors[$name] : array();
$widgetAttributes = isset($attributes[$name]) ? $attributes[$name] : array();
if ($widget instanceof sfWidgetForm && $widget->isHidden())
{
$hiddenRows[] = $this->renderField($name, $value, $widgetAttributes);
}
else
{
$field = $this->renderField($name, $value, $widgetAttributes, $error);
// don't add a label tag and errors if we embed a form schema
$label = $widget instanceof sfWidgetFormSchema ?
$this->getFormFormatter()->generateLabelName($name) :
$this->getFormFormatter()->generateLabel($name);
$error = $widget instanceof sfWidgetFormSchema ? array() : $error;
$lonelyRows[] = strtr($formFormat
->formatRow($label, $field, $error, $this->getHelp($name)),
array('%hidden_fields%' => ''));
}
}
$html = '';
if ($groups)
{
// insert hidden fields in the last row
$i = 0;
$maxGroup = count($groups);
foreach ($groups as $fieldset => $group)
{
for ($j = 0, $max = count($group); $j < $max; $j++)
{
$group[$j] = strtr($group[$j], array('%hidden_fields%' =>
(($i == $maxGroup -1) && $j == $max - 1) ?
implode("\n", $hiddenRows) : ''));
}
$html .= $this->getFormFormatter()
->formatFieldSet($fieldset, implode('', $group));
$i++;
}
}
else
{
// only hidden fields
$lonelyRows[] = implode("\n", $hiddenRows);
}
$html .= implode('', $lonelyRows);
return $this->getFormFormatter()
->formatErrorRow($this->getGlobalErrors($errors)) . $html;
}
}
如果您想使用格式化程序，以下是您的格式化程序必须实现的接口：
interface FieldsettedFormFormatterInterface
{
/**
* This method will be used to render a fieldset
*
* @param string $name the name of the widget
* @param string $widgets the widgets html
*
* @return string the html for the fieldset
*/
public function formatFieldset($name, $widgets);
}