我的视图使用Kohana View_Core导数。我想在关闭时显示缓冲视图或自定义视图，例如
- 如果运行时出现一些错误/异常=>显示错误页面
- 如果执行时没有错误=>显示缓冲输出
View
class View
{
private $file = '';
private $data = array();
private static $global_data = array();
public static $view = '';
private function __construct($file = FALSE, array $data = array())
{
if ($file !== FALSE)
{
$this->set_filename($file);
}
if (!empty($data))
{
$this->data = $data + $this->data;
}
}
/**
* Creates new view object and returns it.
*
* @param string filename
* @param array variables
* @return object View
*/
public static function factory($file = FALSE, array $data = array())
{
return new View($file, $data);
}
/**
* Captures the output that is generated when a view is included.
* The view data will be extracted to make local variables. This method
* is static to prevent object scope resolution.
*
* @param string filename
* @param array variables
* @return string
*/
public static function capture($view_filename, array $view_data)
{
extract($view_data, EXTR_SKIP);
ob_start();
try
{
require $view_filename;
}
catch (Exception $error)
{
$ob_handlers = ob_list_handlers();
if (!empty($ob_handlers))
{
ob_end_clean();
}
throw $error;
}
return ob_get_clean();
}
/**
* Load view file
*
* @param string filename
* @return boolean
* @return object View
*/
public function set_filename($file)
{
if (strpos($file, APP_DIR) === FALSE)
{
$extension = strrpos($file, '.') === FALSE ? '.php' : '';
$path = APP_DIR.DIR_SEP.'system'.DIR_SEP.'views'.DIR_SEP.$file.$extension;
}
else
{
$path = $file;
}
if (!file_exists($path))
{
Error::throw_throwable('Unable to find file '.$path);
}
$this->file = $path;
return $this;
}
/**
* Sets a global variable, similar to the set() method.
*
* @param string variable name
* @param mixed variable value
* @return object View
*/
public static function set_global($key, $value = FALSE)
{
self::$global_data[$key] = $value;
}
/**
* Assigns a variable by name.
*
* @param string variable name or an array of variables
* @param mixed variable value
* @return object View
*/
public function set($key, $value = FALSE)
{
if (is_array($key))
{
foreach ($key as $name => $value)
{
$this->data[$name] = $value;
}
}
else
{
$this->data[$key] = $value;
}
return $this;
}
/**
* Renders the view object to a string.
*
* @throws exception
* @param string filename
* @return string
*/
public function render($file = FALSE)
{
if ($file !== FALSE)
{
$this->set_filename($file);
}
if (empty($this->file))
{
Error::throw_throwable('Unable to find file '.$this->file);
}
$data = array_merge(View::$global_data, $this->data);
return View::capture($this->file, $data);
}
public function __toString()
{
try
{
$result = $this->render();
return $result;
}
catch (Exception $error)
{
Error::throw_throwable($error);
}
}
public function __set($key, $value)
{
$this->set($key, $value);
}
public function __get($key)
{
return isset($this->data[$key]) ? $this->data[$key] : FALSE;
}
}
使用
$content = View::factory('main/Main')
->set('order', !empty($_SESSION['order']) ? $_SESSION['order'] : FALSE)
->set('order_success', $order_success)
->set('items', $items)
->set('weights', $weights)
->set('ammounts', $ammounts)
->set('prices', $prices)
->set('total_price', $total_price)
->set('validator', FALSE)
;
$template = $this->get_template();
echo $template->set('content', $content);
前几行所做的是在模板视图中回显内容视图。这也应该是我的关闭处理程序在必要时进行响应的结果。有没有一种简单的方法可以做到这一点？
听起来您想要的是在出现错误时显示一个自定义错误页面。我在这里通常要做的是扩展Kohana_Kohana_Exception类（作为Kohana_Exception）并覆盖public static function handler方法。
这使您可以放入一些代码，这些代码可以检查错误是什么（HTTP_404_Exception或其他）环境是什么（dev/production），并执行您想要的任何行为。
在我的情况下，类似这样的东西：
// If not production and not an HTTP exception
if ( ! ($e instanceof HTTP_Exception) && Kohana::$environment !== Kohana::PRODUCTION)
{
// Use built in error handler to show stace trace for developers
Kohana_Kohana_Exception::handler($e);
// ... exit(1);
}
// Otherwise
$injected_routes = array(Route::get('error'));
echo Request::factory('error-uri', NULL, FALSE, $injected_routes)
->headers(Request::$initial->headers())
->execute()
->send_headers(TRUE)
->body();
在这里，您需要另一个名为error的路由，它与error-uri匹配，并转到另一个错误控制器/操作/视图，您可以使用它来呈现自定义错误页面。
为此，您需要通过将'errors' => TRUE传递到bootstrap.php中的Kohana::init调用来启用错误。