<?php
/* SVN FILE: $Id$ */
/**
* Methods for displaying presentation data in the view.
*
*
* PHP versions 4 and 5
*
* CakePHP : Rapid Development Framework <http://www.cakephp.org/>
* Copyright (c) 2006, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright (c) 2006, Cake Software Foundation, Inc.
* @link http://www.cakefoundation.org/projects/info/cakephp CakePHP Project
* @package cake
* @subpackage cake.cake.libs.view
* @since CakePHP v 0.10.0.1076
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
/**
* Included libraries.
*/
uses(DS.'view'.DS.'helper');
/**
* View, the V in the MVC triad.
*
* Class holding methods for displaying presentation data.
*
* @package cake
* @subpackage cake.cake.libs.view
* @since CakePHP v 0.10.0.1076
*/
class View extends Object
{
/**
* Name of the controller.
*
* @var string Name of controller
* @access public
*/
var $name = null;
/**
* Stores the current URL (for links etc.)
*
* @var string Current URL
*/
var $here = null;
/**
* Not used. 2006-09
*
* @var unknown_type
* @access public
*/
var $parent = null;
/**
* Action to be performed.
*
* @var string Name of action
* @access public
*/
var $action = null;
/**
* An array of names of models the particular controller wants to use.
*
* @var mixed A single name as a string or a list of names as an array.
* @access protected
*/
var $uses = false;
/**
* An array of names of built-in helpers to include.
*
* @var mixed A single name as a string or a list of names as an array.
* @access protected
*/
var $helpers = array('Html');
/**
* Path to View.
*
* @var string Path to View
*/
var $viewPath;
/**
* Variables for the view
*
* @var array
* @access private
*/
var $_viewVars = array();
/**
* Title HTML element of this View.
*
* @var boolean
* @access private
*/
var $pageTitle = false;
/**
* An array of model objects.
*
* @var array Array of model objects.
* @access public
*/
var $models = array();
/**
* Path parts for creating links in views.
*
* @var string Base URL
* @access public
*/
var $base = null;
/**
* Name of layout to use with this View.
*
* @var string
* @access public
*/
var $layout = 'default';
/**
* Turns on or off Cake's conventional mode of rendering views. On by default.
*
* @var boolean
* @access public
*/
var $autoRender = true;
/**
* Turns on or off Cake's conventional mode of finding layout files. On by default.
*
* @var boolean
* @access public
*/
var $autoLayout = true;
/**
* Array of parameter data
*
* @var array Parameter data
*/
var $params;
/**
* True when the view has been rendered.
*
* @var boolean
*/
var $hasRendered = null;
/**
* Reference to the Controller for this view.
*
* @var Controller
*/
var $controller = null;
/**
* Array of loaded view helpers.
*
* @var array
*/
var $loaded = array();
/**
* File extension. Defaults to Cake's conventional ".thtml".
*
* @var array
*/
var $ext = '.thtml';
/**
* Sub-directory for this view file.
*
* @var string
*/
var $subDir = null;
/**
* Enter description here... Themes. New in Cake RC4.
*
* @var array
*/
var $themeWeb = null;
/**
* Plugin name. A Plugin is a sub-application. New in Cake RC4.
*
* @link http://wiki.cakephp.org/docs:plugins
* @var string
*/
var $plugin = null;
/**
* Constructor
*
* @return View
*/
function __construct (&$controller)
{
$this->controller =& $controller;
$this->_viewVars =& $this->controller->_viewVars;
$this->action =& $this->controller->action;
$this->autoLayout =& $this->controller->autoLayout;
$this->autoRender =& $this->controller->autoRender;
$this->base =& $this->controller->base;
$this->webroot =& $this->controller->webroot;
$this->helpers =& $this->controller->helpers;
$this->here =& $this->controller->here;
$this->layout =& $this->controller->layout;
$this->modelNames =& $this->controller->modelNames;
$this->name =& $this->controller->name;
$this->pageTitle =& $this->controller->pageTitle;
$this->parent =& $this->controller->parent;
$this->viewPath =& $this->controller->viewPath;
$this->params =& $this->controller->params;
$this->data =& $this->controller->data;
$this->displayFields =& $this->controller->displayFields;
$this->webservices =& $this->controller->webservices;
$this->plugin =& $this->controller->plugin;
parent::__construct();
}
/**
* Renders view for given action and layout. If $file is given, that is used
* for a view filename (e.g. customFunkyView.thtml).
*
* @param string $action Name of action to render for
* @param string $layout Layout to use
* @param string $file Custom filename for view
*/
function render($action=null, $layout=null, $file=null)
{
if (isset($this->hasRendered) && $this->hasRendered)
{
return true;
}
else
{
$this->hasRendered = false;
}
if (!$action)
{
$action = $this->action;
}
if ($layout)
{
$this->setLayout($layout);
}
if ($file)
{
$viewFileName = $file;
}
else
{
$viewFileName = $this->_getViewFileName($action);
}
if(!is_null($this->plugin) && is_null($file))
{
return $this->pluginView($action, $layout);
}
if (!is_file($viewFileName) && !$viewFileName = fileExistsInPath($viewFileName))
{
if (strtolower(get_class($this)) == 'template')
{
return array('action' => $action, 'layout' => $layout, 'viewFn' => $viewFileName);
}
// check to see if the missing view is due to a custom missingAction
if (strpos($action, 'missingAction') !== false)
{
$errorAction = 'missingAction';
}
else
{
$errorAction = 'missingView';
}
// check for controller-level view handler
foreach(array($this->name, 'errors') as $viewDir)
{
$errorAction =Inflector::underscore($errorAction);
if(file_exists(VIEWS.$viewDir.DS.$errorAction.$this->ext))
{
$missingViewFileName = VIEWS.$viewDir.DS.$errorAction.$this->ext;
}
elseif($missingViewFileName = fileExistsInPath(LIBS.'view'.DS.'templates'.DS.$viewDir.DS.$errorAction.'.thtml'))
{
}
else
{
$missingViewFileName = false;
}
$missingViewExists = is_file($missingViewFileName);
if ($missingViewExists)
{
break;
}
}
if (strpos($action, 'missingView') === false)
{
return $this->cakeError('missingView',
array(array('className' => $this->controller->name,
'action' => $action,
'file' => $viewFileName)));
$isFatal = isset($this->isFatal) ? $this->isFatal : false;
if (!$isFatal)
{
$viewFileName = $missingViewFileName;
}
}
else
{
$missingViewExists = false;
}
if (!$missingViewExists || $isFatal)
{
// app/view/errors/missing_view.thtml view is missing!
if (DEBUG)
{
trigger_error(sprintf(__("No template file for view %s (expected %s), create it first'"), $action, $viewFileName), E_USER_ERROR);
}
else
{
$this->error('404', 'Not found', sprintf("The requested address %s was not found on this server.", '', "missing view \"{$action}\""));
}
die();
}
}
if ($viewFileName && !$this->hasRendered)
{
if(substr($viewFileName, -5) === 'thtml')
{
$out = View::_render($viewFileName, $this->_viewVars, 0);
}
else
{
$out = $this->_render($viewFileName, $this->_viewVars, 0);
}
if ($out !== false)
{
if ($this->layout && $this->autoLayout)
{
$out = $this->renderLayout($out);
}
print $out;
$this->hasRendered = true;
}
else
{
$out = $this->_render($viewFileName, $this->_viewVars, false);
trigger_error(sprintf(__("Error in view %s, got: <blockquote>%s</blockquote>"), $viewFileName, $out), E_USER_ERROR);
}
return true;
}
}
/**
* Renders a piece of PHP with provided parameters and returns HTML, XML, or any other string.
*
* This realizes the concept of Elements, (or "partial layouts")
* and the $params array is used to send data to be used in the
* Element.
*
* @link http://wiki.cakephp.org/docs:view:renderelement
* @param string $name Name of template file in the /app/views/elements/ folder
* @param array $params Array of data to be made available to the for rendered view (i.e. the Element)
* @return string Rendered output
*/
function renderElement($name, $params=array())
{
$fn = ELEMENTS.$name.$this->ext;
if(!is_null($this->plugin))
{
if(file_exists(APP.'plugins'.DS.$this->plugin.'views'.DS.'elements'.DS.$name.$this->ext))
{
$fn = APP.'plugins'.DS.$this->plugin.'views'.DS.'elements'.DS.$name.$this->ext;
$params = array_merge_recursive($params, $this->loaded);
return $this->_render($fn, array_merge($this->_viewVars, $params), true, false);
}
}
if (!file_exists($fn))
{
return "(Error rendering {$name})";
}
$params = array_merge_recursive($params, $this->loaded);
return $this->_render($fn, array_merge($this->_viewVars, $params), true, false);
}
/**
* Renders a layout. Returns output from _render(). Returns false on error.
*
* @param string $content_for_layout Content to render in a view, wrapped by the surrounding layout.
* @return mixed Rendered output, or false on error
*/
function renderLayout($content_for_layout)
{
$layout_fn = $this->_getLayoutFileName();
if(DEBUG > 2)
{
$debug = View::_render(LIBS.'view'.DS.'templates'.DS.'elements'.DS.'dump.thtml', array('controller' => $this->controller), true, false);
}
else
{
$debug = '';
}
$data_for_layout = array_merge($this->_viewVars, array(
'title_for_layout'=>$this->pageTitle !== false? $this->pageTitle: Inflector::humanize($this->viewPath),
'content_for_layout'=>$content_for_layout,
'cakeDebug' => $debug));
if (is_file($layout_fn))
{
$data_for_layout = array_merge($data_for_layout,$this->loaded); # load all view variables)
if(substr($layout_fn, -5) === 'thtml')
{
$out = View::_render($layout_fn, $data_for_layout, true, false);
}
else
{
$out = $this->_render($layout_fn, $data_for_layout, true, false);
}
if ($out === false)
{
$out = $this->_render($layout_fn, $data_for_layout, false);
trigger_error(sprintf(__("Error in layout %s, got: <blockquote>%s</blockquote>"), $layout_fn, $out), E_USER_ERROR);
return false;
}
else
{
return $out;
}
}
else
{
return $this->cakeError('missingLayout',
array(array('layout' => $this->layout,
'file' => $layout_fn)));
}
}
/**
* Sets layout to be used when rendering.
*
* @param string $layout Name of layout.
*/
function setLayout($layout)
{
$this->layout = $layout;
}
/**
* Displays an error page to the user. Uses layouts/error.html to render the page.
*
* @param int $code HTTP Error code (for instance: 404)
* @param string $name Name of the error (for instance: Not Found)
* @param string $message Error message as a web page
*/
function error ($code, $name, $message)
{
header ("HTTP/1.0 {$code} {$name}");
print ($this->_render(VIEWS.'layouts/error.thtml', array('code'=>$code,'name'=>$name,'message'=>$message)));
}
/**************************************************************************
* Private methods.
*************************************************************************/
/**
* Returns filename of given action's template file (.thtml) as a string. CamelCased action names will be under_scored! This means that you can have LongActionNames that refer to long_action_names.thtml views.
*
* @param string $action Controller action to find template filename for
* @return string Template filename
* @access private
*/
function _getViewFileName($action)
{
$action = Inflector::underscore($action);
if(!is_null($this->webservices))
{
$type = strtolower($this->webservices).DS;
}
else
{
$type = null;
}
$viewFileName = VIEWS.$this->viewPath.DS.$this->subDir.$type.$action.$this->ext;
if(file_exists(VIEWS.$this->viewPath.DS.$this->subDir.$type.$action.$this->ext))
{
$viewFileName = VIEWS.$this->viewPath.DS.$this->subDir.$type.$action.$this->ext;
}
elseif(file_exists(VIEWS.'errors'.DS.$this->subDir.$type.$action.$this->ext))
{
$viewFileName = VIEWS.'errors'.DS.$this->subDir.$type.$action.$this->ext;
}
elseif($viewFileName = fileExistsInPath(LIBS.'view'.DS.'templates'.DS.'errors'.DS.$type.$action.'.thtml'))
{
}
elseif($viewFileName = fileExistsInPath(LIBS.'view'.DS.'templates'.DS.$this->viewPath.DS.$type.$action.'.thtml'))
{
}
$viewPath = explode(DS, $viewFileName);
$i = array_search('..', $viewPath);
unset($viewPath[$i-1]);
unset($viewPath[$i]);
$return = '/'.implode('/', $viewPath);
return $return;
}
/**
* Returns layout filename for this template as a string.
*
* @return string Filename for layout file (.thtml).
* @access private
*/
function _getLayoutFileName()
{
if(!is_null($this->webservices))
{
$type = strtolower($this->webservices).DS;
}
else
{
$type = null;
}
if(!is_null($this->plugin))
{
if(file_exists(APP.'plugins'.DS.$this->plugin.'views'.DS.'layouts'.DS.$this->layout.$this->ext))
{
$layoutFileName = APP.'plugins'.DS.$this->plugin.'views'.DS.'layouts'.DS.$this->layout.$this->ext;
return $layoutFileName;
}
}
$layoutFileName = LAYOUTS.$type."{$this->layout}$this->ext";
if(file_exists(LAYOUTS.$this->subDir.$type."{$this->layout}$this->ext"))
{
$layoutFileName = LAYOUTS.$this->subDir.$type."{$this->layout}$this->ext";
}
elseif($layoutFileName = fileExistsInPath(LIBS.'view'.DS.'templates'.DS."layouts".DS.$type."{$this->layout}.thtml"))
{
}
return $layoutFileName;
}
/**
* Renders and returns output for given view filename with its
* array of data.
*
* @param string $___viewFn Filename of the view
* @param array $___data_for_view Data to include in rendered view
* @param boolean $___play_safe If set to false, the include() of the $__viewFn is done without suppressing output of errors
* @return string Rendered output
* @access private
*/
function _render($___viewFn, $___data_for_view, $___play_safe = true, $loadHelpers = true)
{
if ($this->helpers != false && $loadHelpers === true)
{
$loadedHelpers = array();
$loadedHelpers = $this->_loadHelpers($loadedHelpers, $this->helpers);
foreach(array_keys($loadedHelpers) as $helper)
{
$replace = strtolower(substr($helper, 0, 1));
$camelBackedHelper = preg_replace('/\\w/', $replace, $helper, 1);
${$camelBackedHelper} =& $loadedHelpers[$helper];
if(isset(${$camelBackedHelper}->helpers) && is_array(${$camelBackedHelper}->helpers))
{
foreach(${$camelBackedHelper}->helpers as $subHelper)
{
${$camelBackedHelper}->{$subHelper} =& $loadedHelpers[$subHelper];
}
}
$this->loaded[$camelBackedHelper] = (${$camelBackedHelper});
}
}
extract($___data_for_view, EXTR_SKIP); # load all view variables
/**
* Local template variables.
*/
$BASE = $this->base;
$params = &$this->params;
$page_title = $this->pageTitle;
/**
* Start caching output (eval outputs directly so we need to cache).
*/
ob_start();
/**
* Include the template.
*/
$___play_safe? @include($___viewFn): include($___viewFn);
$out = ob_get_clean();
return $out;
}
/**
* Loads helpers, with their dependencies.
*
* @param array $loaded List of helpers that are already loaded.
* @param array $helpers List of helpers to load.
* @return array
*/
function &_loadHelpers(&$loaded, $helpers)
{
static $tags;
if(empty($tags))
{
$helperTags = new Helper();
$tags = $helperTags->loadConfig();
}
foreach ($helpers as $helper)
{
$helperCn = $helper.'Helper';
if(in_array($helper, array_keys($loaded)) !== true)
{
if(!class_exists($helperCn))
{
$helperFn = Inflector::underscore($helper).'.php';
if(file_exists(APP.'plugins'.DS.$this->plugin.'views'.DS.'helpers'.DS.$helperFn))
{
$helperFn = APP.'plugins'.DS.$this->plugin.'views'.DS.'helpers'.DS.$helperFn;
}
else if(file_exists(HELPERS.$helperFn))
{
$helperFn = HELPERS.$helperFn;
}
else if($helperFn = fileExistsInPath(LIBS.'view'.DS.'helpers'.DS.$helperFn))
{
}
if (is_file($helperFn))
{
require_once $helperFn;
}
else
{
return $this->cakeError('missingHelperFile',
array(array('helper' => $helper,
'file' => Inflector::underscore($helper).'.php')));
}
}
$replace = strtolower(substr($helper, 0, 1));
$camelBackedHelper = preg_replace('/\\w/', $replace, $helper, 1);
if(class_exists($helperCn))
{
${$camelBackedHelper} =& new $helperCn;
${$camelBackedHelper}->base = $this->base;
${$camelBackedHelper}->webroot = $this->webroot;
${$camelBackedHelper}->here = $this->here;
${$camelBackedHelper}->params = $this->params;
${$camelBackedHelper}->action = $this->action;
${$camelBackedHelper}->data = $this->data;
${$camelBackedHelper}->themeWeb = $this->themeWeb;
${$camelBackedHelper}->tags = $tags;
if(!empty($this->validationErrors))
{
${$camelBackedHelper}->validationErrors = $this->validationErrors;
}
$loaded[$helper] =& ${$camelBackedHelper};
if (isset(${$camelBackedHelper}->helpers) && is_array(${$camelBackedHelper}->helpers))
{
$loaded =& $this->_loadHelpers($loaded, ${$camelBackedHelper}->helpers);
}
}
else
{
return $this->cakeError('missingHelperClass',
array(array('helper' => $helper,
'file' => Inflector::underscore($helper).'.php')));
}
}
}
return $loaded;
}
function pluginView($action, $layout)
{
$viewFileName = APP.'plugins'.DS.$this->plugin.'views'.DS.$this->viewPath.DS.$action.$this->ext;
if(file_exists($viewFileName))
{
$this->render($action, $layout, $viewFileName);
}
else
{
return $this->cakeError('missingView',
array(array('className' => $this->controller->name,
'action' => $action,
'file' => $viewFileName)));
}
}
}
?>