如何基于symfony中父窗体中的值验证/保存嵌入窗体?

注:请看杰里米的答案,因为我的答案是基于他的。

谢谢你的回答,杰里米。你的代码有一些问题,所以我想我应该发布我实现的解决方案来解释我的不同之处。

doBind()的重写有一个问题,如果父值没有从验证器返回clean,则会抛出未捕获的sfValidatorError。我把它包在一个try/catch里来抑制它。

protected $selectedTemplate;

public function getTemplateToEmbeddedFormKeyMap()
{
    // An array of template values to embedded forms
    return array(
        'template1' => 'templateform1',
        'template2' => 'templateform2',
        'template3' => 'templateform3',
        'templateN' => 'templateformN'
    );
}

protected function doBind(array $values)
{
    // Clean the "template" value
    try
    {
        $this->selectedTemplate = $this->validatorSchema['template']->clean(array_key_exists('template', $values) ? $values['template'] : NULL);
    }
    catch(sfValidatorError $e) {}

    // For each template embedded form
    foreach($this->getTemplateToEmbeddedFormKeyMap() as $template => $form_key)
    {
        // If there is no selected template or the embedded form is not for the selected template
        if ($this->selectedTemplate == NULL || $this->selectedTemplate != $template)
        {
            // Don't validate it
            $this->validatorSchema[$form_key] = new sfValidatorPass();
        }
    }

    // Parent
    parent::doBind($values);
}

2 新步骤 重写updateObjectEmbeddedForms()

updateObjectEmbeddedForms() 删除与未验证的嵌入窗体相关的任何数据。

public function updateObjectEmbeddedForms($values, $forms = null)
{
    // For each template embedded form
    foreach($this->getTemplateToEmbeddedFormKeyMap() as $template => $form_key)
    {
        // If there is no selected template or the embedded form is not for the selected template
        if ($this->selectedTemplate == NULL || $this->selectedTemplate != $template)
        {
            // Remove the data
            unset($values[$form_key]);
        }
    }

    // Parent
    parent::updateObjectEmbeddedForms($values, $forms);
}

最后,我不喜欢我必须复制和粘贴整个基地 saveEmbeddedForms()

public function saveEmbeddedForms($con = null, $forms = null)
{
    // Get the embedded forms
    if ($forms === NULL)
    {
        $forms = $this->getEmbeddedForms();
    }

    // For each template embedded form
    foreach($this->getTemplateToEmbeddedFormKeyMap() as $template => $form_key)
    {
        // If there is no selected template or the embedded form is not for the selected template
        if ($this->selectedTemplate == NULL || $this->selectedTemplate != $template)
        {
            // Remove the form so it isn't saved
            unset($forms[$form_key]);
        }
    }

    // Parent
    parent::saveEmbeddedForms($con, $forms);
}

下面是这样做的一般方法。所有这些方法都可以添加到 BaseFormDoctrine 除了 doBind

1添加方法以跳过窗体。

/**
* @param string $name Adds $name to an array of form names to ignore when saving/updating.
*/
protected function skipSavingForm($name)
{
  $this->skipSavingForms[$name] = $name;
  $this->validatorSchema[$name] = new sfValidatorPass();
}

2重写doBind以便不验证您不保存的窗体

这样,即使未保存的表单提交时出现错误,表单仍然会验证。这是安全的,因为这些值不会被保存。或者,可以使用preValidator清除这些值。但是,我更喜欢这种解决方案,这样如果用户提交的表单有错误,那么两个表单的值仍然存在。

/**
* Override doBind to skip validation on the form not being saved
* @param array $values
* @see sfForm::doBind
*/
protected function doBind(array $values)
{
  try
  {
    $formDecidingValue = $this->validatorSchema[$values['form_deciding_field']]->clean();
  } catch (sfValidatorError $e) {
     //either create an sfValidatorErrorSchema and throw it or call through to parent here and let parent::doBind throw the error
     return; //either way, we want to stop processing
  }

  $this->skipSavingForm($formDecidingValue ? 'Form1' : 'Form2');
  return parent::doBind($values);
}

/**
*@return array An array of forms to be saved
*/
public function getFormsToSave()
{
  return array_diff_key($this->getEmbeddedForms(), $this->skipSavingForms);
}

4重写saveEmbeddedForms和updateObjectEmbeddedForms

public function saveEmbeddedForms($con = null, $forms = null)
{
  if (null === $con)
  {
    $con = $this->getConnection();
  }

  if (null === $forms)
  {
    $forms = $this->getFormsToSave();
  }

  foreach ($forms as $form)
  {
    if ($form instanceof sfFormObject)
    {
      $form->saveEmbeddedForms($con);
      $form->getObject()->save($con);
    }
    else
    {
      $this->saveEmbeddedForms($con, $form->getFormsToSave());
    }
  }
}

public function updateObjectEmbeddedForms($values, $forms = null)
{
  if (null === $forms)
  {
    $forms = $this->getFormsToSave();
  }

  foreach ($forms as $name => $form)
  {
    if (!isset($values[$name]) || !is_array($values[$name]))
    {
      continue;
    }

    if ($form instanceof sfFormObject)
    {
      $form->updateObject($values[$name]);
    }
    else
    {
      $this->updateObjectEmbeddedForms($values[$name], $form->getFormsToSave());
    }
  }
}