Home  >  Article  >  Backend Development  >  Yii不依赖Model的表单生成器用法实例_php实例

Yii不依赖Model的表单生成器用法实例_php实例

WBOY
WBOYOriginal
2016-06-07 17:14:501163browse

本文实例讲述了Yii不依赖Model的表单生成器用法。分享给大家供大家参考。具体实现方法如下:

默认的Yii的表单生成器只需要这样就可以了:

复制代码 代码如下:
$form = new CForm('application.views.site.loginForm', $model);

这里的application.views.site.loginForm也可以是配置数组。但是如果$model参数不传的话是会报错的:Fatal error: Call to a member function isAttributeSafe()
比如我要生成一个组表单,但是我不想依赖于model,根据配置就可以生成一组表单该怎么办,

默认生成的表单的label是根据$model->attributes来显示的,所以我做了2件事:

1.继承CFormInputElement覆盖renderLabel方法,将label显示成自己配置的element的label

2.继承CForm覆盖renderElement方法,$element instanceof UCFormInputElement,并覆盖render方法,将Elements和getButtons循环输出
直接上代码:
app/protected/extensions/UCForm.php

复制代码 代码如下:
/**
 * @author Ryan
 */
class UCForm extends CForm
{
 public function render()
 {
  $output = $this->renderBegin();
  foreach ($this->getElements() as $element)
  {
   $output .= $element->render();
  }
  foreach ($this->getButtons() as $button)
  {
   $output .= $button->render();
  }
  $output .= $this->renderEnd();
  return $output;
 }
 public function renderElement($element)
 {
  if (is_string($element))
  {
   if (($e = $this[$element]) === null && ($e = $this->getButtons()->itemAt($element)) === null)
    return $element;
   else
    $element = $e;
  }
  if ($element->getVisible())
  {
   //UCFormInputElement 代替 CFormInputElement
   if ($element instanceof UCFormInputElement)
   {
    if ($element->type === 'hidden')
     return "
n" . $element->render() . "
n";
    else
     return "
n" . $element->render() . "
n";
   }
   else if ($element instanceof CFormButtonElement)
    return $element->render() . "n";
   else
    return $element->render();
  }
  return '';
 }
}

再来个简单的调用示例:
复制代码 代码如下:
/**
 * @author Ryan
 */
class PlayerSearchController extends Controller
{
 public function actionIndex()
 {
  $config = array(
      'class' => 'ddd',
      'action'=>'',
      'elements' => array(
   '

',
   'username' => array(
       'label'=>'用户名啊',//注意这里的label
       'type' => 'text',
       'maxlength' => 32,
       'value' => ''
   ),
   '

',
   'password' => array(
       'label'=>'昵称啊',//注意这里的label
       'type' => 'password',
       'maxlength' => 32,
       'value' => ''
   ),
      ),
      'buttons' => array(
   'login' => array(
       'type' => 'submit',
       'label' => 'Login',
   ),
      ),
  );
  $model = new CFormModel();
  $form = new UCForm($config, $model);
  $this->render('index', compact('form'));
 }
}

希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn