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102 lines
2.8 KiB
102 lines
2.8 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This library provides methods for using views with MVC pattern
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* @package chamilo.library
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* @author Christian Fasanando <christian1827@gmail.com>
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*/
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class ViewException extends Exception {}
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class View
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{
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private $data;
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private $template;
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private $layout;
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private $tool_path;
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/**
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* Constructor, init tool path for rendering
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* @param string tool name (optional)
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* @param string $template_path
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*/
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public function __construct($toolname = '', $template_path=null)
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{
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if (!empty($toolname)) {
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if (isset($template_path)) {
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$path = $template_path.$toolname.'/';
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} else {
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$path = api_get_path(SYS_CODE_PATH).$toolname.'/';
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}
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if (is_dir($path)) {
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$this->tool_path = $path;
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} else {
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throw new ViewException('View::__construct() $path directory does not exist ' . $path);
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}
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}
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}
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/**
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* Set data sent from a controller
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* @param array data
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*/
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public function set_data($data)
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{
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if (!is_array($data)) {
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throw new ViewException('View::set_data() $data must to be an array, you have sent a' . gettype( $data ));
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}
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$this->data = $data;
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}
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/**
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* Set layout view sent from a controller
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* @param string layout view
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* @param string $layout
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*/
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public function set_layout( $layout )
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{
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$this->layout = $layout;
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}
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/**
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* Set template view sent from a controller
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* @param string template view
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* @param string $template
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*/
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public function set_template($template)
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{
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$this->template = $template;
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}
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/**
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* Render data to the template and layout views
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*/
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public function render()
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{
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$content = $this->render_template();
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$target = $this->tool_path.$this->layout.'.php';
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if (file_exists($target)) {
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require_once $target;
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} else {
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throw new ViewException('View::render() invalid file path '.$target);
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}
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}
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/**
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* It's used into render method for rendering data in the template and layout views
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* @return String Rendered template (as HTML, most of the time)
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*/
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private function render_template()
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{
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$target = $this->tool_path.$this->template.'.php';
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if (file_exists($target)) {
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ob_start();
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@extract($this->data, EXTR_OVERWRITE); //pass the $this->data array into local scope
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require_once $target;
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$content = ob_get_clean();
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return $content;
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} else {
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throw new ViewException('View::render_template() invalid file path '.$target);
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}
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}
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}
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