我来到这里是因为我需要{{ render() }}
在 Twig 中创建一个函数来模拟 Symfony2 的行为。从视图中渲染控制器对于显示独立的小部件或 ajax 可重新加载的东西来说真的很酷。
即使你不是 Twig 用户,你仍然可以使用这个助手并在视图中使用它来渲染控制器,使用<?php echo twig_render('welcome/index', $param1, $param2, $_); ?>
. 这将回显您的控制器输出的所有内容。
这里是:
helpers/twig_helper.php
<?php
if (!function_exists('twig_render'))
{
function twig_render()
{
$args = func_get_args();
$route = array_shift($args);
$controller = APPPATH . 'controllers/' . substr($route, 0, strrpos($route, '/'));
$explode = explode('/', $route);
if (count($explode) < 2)
{
show_error("twig_render: A twig route is made from format: path/to/controller/action.");
}
if (!is_file($controller . '.php'))
{
show_error("twig_render: Controller not found: {$controller}");
}
if (!is_readable($controller . '.php'))
{
show_error("twig_render: Controller not readable: {$controller}");
}
require_once($controller . '.php');
$class = ucfirst(reset(array_slice($explode, count($explode) - 2, 1)));
if (!class_exists($class))
{
show_error("twig_render: Controller file exists, but class not found inside: {$class}");
}
$object = new $class();
if (!($object instanceof CI_Controller))
{
show_error("twig_render: Class {$class} is not an instance of CI_Controller");
}
$method = $explode[count($explode) - 1];
if (!method_exists($object, $method))
{
show_error("twig_render: Controller method not found: {$method}");
}
if (!is_callable(array($object, $method)))
{
show_error("twig_render: Controller method not visible: {$method}");
}
call_user_func_array(array($object, $method), $args);
$ci = &get_instance();
return $ci->output->get_output();
}
}
特定于 Twig 用户(将此代码调整到您的 Twig 实现):
libraries/Twig.php
$this->_twig_env->addFunction('render', new Twig_Function_Function('twig_render'));
Usage
{{ render('welcome/index', param1, param2, ...) }}