tags) for the layout
*
* @var array
* @access protected
*/
protected $_scripts = array();
/**
* Holds an array of paths.
*
* @var array
* @access private
*/
private $__paths = array();
/**
* Constructor
*
* @param Controller $controller A controller object to pull View::__passedArgs from.
*/
function __construct(&$controller) {
if (is_object($controller)) {
$count = count($this->__passedVars);
for ($j = 0; $j < $count; $j++) {
$var = $this->__passedVars[$j];
$this->{$var} = $controller->{$var};
}
}
$this->Helpers = new HelperCollection($this);
parent::__construct();
}
/**
* 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. Elements can be cached through use of the cache key.
*
* ### Special params
*
* - `cache` - enable caching for this element accepts boolean or strtotime compatible string.
* Can also be an array. If `cache` is an array,
* `time` is used to specify duration of cache.
* `key` can be used to create unique cache files.
* - `plugin` - Load an element from a specific plugin.
*
* @param string $name Name of template file in the/app/views/elements/ folder
* @param array $params Array of data to be made available to the for rendered
* view (i.e. the Element)
* @return string Rendered Element
*/
public function element($name, $params = array(), $loadHelpers = false) {
$file = $plugin = $key = null;
if (isset($params['plugin'])) {
$plugin = $params['plugin'];
}
if (isset($this->plugin) && !$plugin) {
$plugin = $this->plugin;
}
if (isset($params['cache'])) {
$expires = '+1 day';
if (is_array($params['cache'])) {
$expires = $params['cache']['time'];
$key = Inflector::slug($params['cache']['key']);
} elseif ($params['cache'] !== true) {
$expires = $params['cache'];
$key = implode('_', array_keys($params));
}
if ($expires) {
$cacheFile = 'element_' . $key . '_' . $plugin . Inflector::slug($name);
$cache = cache('views' . DS . $cacheFile, null, $expires);
if (is_string($cache)) {
return $cache;
}
}
}
$paths = $this->_paths($plugin);
foreach ($paths as $path) {
if (file_exists($path . 'elements' . DS . $name . $this->ext)) {
$file = $path . 'elements' . DS . $name . $this->ext;
break;
}
}
if (is_file($file)) {
$element = $this->_render($file, array_merge($this->viewVars, $params), $loadHelpers);
if (isset($params['cache']) && isset($cacheFile) && isset($expires)) {
cache('views' . DS . $cacheFile, $element, $expires);
}
return $element;
}
$file = $paths[0] . 'elements' . DS . $name . $this->ext;
if (Configure::read('debug') > 0) {
return "Not Found: " . $file;
}
}
/**
* Renders view for given action and layout. If $file is given, that is used
* for a view filename (e.g. customFunkyView.ctp).
*
* @param string $action Name of action to render for
* @param string $layout Layout to use
* @param string $file Custom filename for view
* @return string Rendered Element
*/
public function render($action = null, $layout = null, $file = null) {
if ($this->hasRendered) {
return true;
}
$out = null;
if ($file != null) {
$action = $file;
}
if ($action !== false && $viewFileName = $this->_getViewFileName($action)) {
$out = $this->_render($viewFileName, $this->viewVars);
}
if ($layout === null) {
$layout = $this->layout;
}
if ($out !== false) {
if ($layout && $this->autoLayout) {
$out = $this->renderLayout($out, $layout);
$isCached = (
isset($this->Helpers->Cache) ||
Configure::read('Cache.check') === true
);
if ($isCached) {
$replace = array('', '');
$out = str_replace($replace, '', $out);
}
}
$this->hasRendered = true;
} else {
$out = $this->_render($viewFileName, $this->viewVars);
trigger_error(sprintf(__("Error in view %s, got: %s
"), $viewFileName, $out), E_USER_ERROR);
}
return $out;
}
/**
* Renders a layout. Returns output from _render(). Returns false on error.
* Several variables are created for use in layout.
*
* - `title_for_layout` - A backwards compatible place holder, you should set this value if you want more control.
* - `content_for_layout` - contains rendered view file
* - `scripts_for_layout` - contains scripts added to header
*
* @param string $content_for_layout Content to render in a view, wrapped by the surrounding layout.
* @return mixed Rendered output, or false on error
*/
public function renderLayout($content_for_layout, $layout = null) {
$layoutFileName = $this->_getLayoutFileName($layout);
if (empty($layoutFileName)) {
return $this->output;
}
$dataForLayout = array_merge($this->viewVars, array(
'content_for_layout' => $content_for_layout,
'scripts_for_layout' => implode("\n\t", $this->_scripts),
));
if (!isset($dataForLayout['title_for_layout'])) {
$dataForLayout['title_for_layout'] = Inflector::humanize($this->viewPath);
}
$attached = $this->Helpers->attached();
if (empty($attached) && !empty($this->helpers)) {
$loadHelpers = true;
} else {
$loadHelpers = false;
$dataForLayout = array_merge($dataForLayout);
}
$this->Helpers->trigger('beforeLayout', array(&$this));
$this->output = $this->_render($layoutFileName, $dataForLayout, $loadHelpers, true);
if ($this->output === false) {
$this->output = $this->_render($layoutFileName, $data_for_layout);
trigger_error(sprintf(__("Error in layout %s, got: %s
"), $layoutFileName, $this->output), E_USER_ERROR);
return false;
}
$this->Helpers->trigger('afterLayout', array(&$this));
return $this->output;
}
/**
* Render cached view. Works in concert with CacheHelper and Dispatcher to
* render cached view files.
*
* @param string $filename the cache file to include
* @param string $timeStart the page render start time
* @return boolean Success of rendering the cached file.
*/
public function renderCache($filename, $timeStart) {
ob_start();
include ($filename);
if (Configure::read('debug') > 0 && $this->layout != 'xml') {
echo "";
}
$out = ob_get_clean();
if (preg_match('/^/', $out, $match)) {
if (time() >= $match['1']) {
@unlink($filename);
unset ($out);
return false;
} else {
if ($this->layout === 'xml') {
header('Content-type: text/xml');
}
$commentLength = strlen('');
echo substr($out, $commentLength);
return true;
}
}
}
/**
* Returns a list of variables available in the current View context
*
* @return array Array of the set view variable names.
*/
public function getVars() {
return array_keys($this->viewVars);
}
/**
* Returns the contents of the given View variable(s)
*
* @param string $var The view var you want the contents of.
* @return mixed The content of the named var if its set, otherwise null.
*/
public function getVar($var) {
if (!isset($this->viewVars[$var])) {
return null;
} else {
return $this->viewVars[$var];
}
}
/**
* Adds a script block or other element to be inserted in $scripts_for_layout in
* the ` ` of a document layout
*
* @param string $name Either the key name for the script, or the script content. Name can be used to
* update/replace a script element.
* @param string $content The content of the script being added, optional.
* @return void
*/
public function addScript($name, $content = null) {
if (empty($content)) {
if (!in_array($name, array_values($this->_scripts))) {
$this->_scripts[] = $name;
}
} else {
$this->_scripts[$name] = $content;
}
}
/**
* Generates a unique, non-random DOM ID for an object, based on the object type and the target URL.
*
* @param string $object Type of object, i.e. 'form' or 'link'
* @param string $url The object's target URL
* @return string
*/
public function uuid($object, $url) {
$c = 1;
$url = Router::url($url);
$hash = $object . substr(md5($object . $url), 0, 10);
while (in_array($hash, $this->uuids)) {
$hash = $object . substr(md5($object . $url . $c), 0, 10);
$c++;
}
$this->uuids[] = $hash;
return $hash;
}
/**
* Returns the entity reference of the current context as an array of identity parts
*
* @return array An array containing the identity elements of an entity
*/
public function entity() {
$assoc = ($this->association) ? $this->association : $this->model;
if (!empty($this->entityPath)) {
$path = explode('.', $this->entityPath);
$count = count($path);
if (
($count == 1 && !empty($this->association)) ||
($count == 1 && $this->model != $this->entityPath) ||
($count == 1 && empty($this->association) && !empty($this->field)) ||
($count == 2 && !empty($this->fieldSuffix)) ||
is_numeric($path[0]) && !empty($assoc)
) {
array_unshift($path, $assoc);
}
return Set::filter($path);
}
return array_values(Set::filter(
array($assoc, $this->modelId, $this->field, $this->fieldSuffix)
));
}
/**
* Allows a template or element to set a variable that will be available in
* a layout or other element. Analagous to Controller::set.
*
* @param mixed $one A string or an array of data.
* @param mixed $two Value in case $one is a string (which then works as the key).
* Unused if $one is an associative array, otherwise serves as the values to $one's keys.
* @return void
*/
public function set($one, $two = null) {
$data = null;
if (is_array($one)) {
if (is_array($two)) {
$data = array_combine($one, $two);
} else {
$data = $one;
}
} else {
$data = array($one => $two);
}
if ($data == null) {
return false;
}
$this->viewVars = $data + $this->viewVars;
}
/**
* Displays an error page to the user. Uses layouts/error.ctp to render the page.
*
* @param integer $code HTTP Error code (for instance: 404)
* @param string $name Name of the error (for instance: Not Found)
* @param string $message Error message as a web page
*/
public function error($code, $name, $message) {
header ("HTTP/1.1 {$code} {$name}");
print ($this->_render(
$this->_getLayoutFileName('error'),
array('code' => $code, 'name' => $name, 'message' => $message)
));
}
/**
* Magic accessor for helpers. Provides access to attributes that were deprecated.
*
* @param string $name Name of the attribute to get.
* @return mixed
*/
public function __get($name) {
if (isset($this->Helpers->{$name})) {
return $this->Helpers->{$name};
}
switch ($name) {
case 'base':
case 'here':
case 'webroot':
case 'data':
return $this->request->{$name};
case 'action':
return isset($this->request->params['action']) ? $this->request->params['action'] : '';
case 'params':
return $this->request;
}
return null;
}
/**
* Interact with the HelperCollection to load all the helpers.
*
* @return void
*/
public function loadHelpers() {
$helpers = HelperCollection::normalizeObjectArray($this->helpers);
foreach ($helpers as $name => $properties) {
$this->Helpers->load($properties['class'], $properties['settings'], true);
}
}
/**
* Renders and returns output for given view filename with its
* array of data.
*
* @param string $___viewFn Filename of the view
* @param array $___dataForView Data to include in rendered view
* @param boolean $loadHelpers Boolean to indicate that helpers should be loaded.
* @param boolean $cached Whether or not to trigger the creation of a cache file.
* @return string Rendered output
*/
protected function _render($___viewFn, $___dataForView, $loadHelpers = true, $cached = false) {
$attached = $this->Helpers->attached();
if (count($attached) === 0 && $loadHelpers === true) {
$this->loadHelpers();
$this->Helpers->trigger('beforeRender', array(&$this));
unset($attached);
}
extract($___dataForView, EXTR_SKIP);
ob_start();
if (Configure::read('debug') > 0) {
include ($___viewFn);
} else {
@include ($___viewFn);
}
if ($loadHelpers === true) {
$this->Helpers->trigger('afterRender', array(&$this));
}
$out = ob_get_clean();
$caching = (
isset($this->Helpers->Cache) &&
(($this->cacheAction != false)) && (Configure::read('Cache.check') === true)
);
if ($caching) {
if (isset($this->Helpers->Cache)) {
$cache =& $this->Helpers->Cache;
$cache->base = $this->request->base;
$cache->here = $this->request->here;
$cache->helpers = $this->helpers;
$cache->action = $this->request->action;
$cache->controllerName = $this->name;
$cache->layout = $this->layout;
$cache->cacheAction = $this->cacheAction;
$cache->cache($___viewFn, $out, $cached);
}
}
return $out;
}
/**
* Loads a helper. Delegates to the HelperCollection to load the helper
*
* @param string $helperName Name of the helper to load.
* @param array $settings Settings for the helper
* @return Helper a constructed helper object.
*/
public function loadHelper($helperName, $settings = array(), $attach = true) {
return $this->Helpers->load($helperName, $settings, $attach);
}
/**
* Returns filename of given action's template file (.ctp) as a string.
* CamelCased action names will be under_scored! This means that you can have
* LongActionNames that refer to long_action_names.ctp views.
*
* @param string $name Controller action to find template filename for
* @return string Template filename
* @throws MissingViewException when a view file could not be found.
*/
protected function _getViewFileName($name = null) {
$subDir = null;
if (!is_null($this->subDir)) {
$subDir = $this->subDir . DS;
}
if ($name === null) {
$name = $this->action;
}
$name = str_replace('/', DS, $name);
if (strpos($name, DS) === false && $name[0] !== '.') {
$name = $this->viewPath . DS . $subDir . Inflector::underscore($name);
} elseif (strpos($name, DS) !== false) {
if ($name{0} === DS || $name{1} === ':') {
if (is_file($name)) {
return $name;
}
$name = trim($name, DS);
} else if ($name[0] === '.') {
$name = substr($name, 3);
} else {
$name = $this->viewPath . DS . $subDir . $name;
}
}
$paths = $this->_paths(Inflector::underscore($this->plugin));
$exts = array($this->ext);
if ($this->ext !== '.ctp') {
array_push($exts, '.ctp');
}
foreach ($exts as $ext) {
foreach ($paths as $path) {
if (file_exists($path . $name . $ext)) {
return $path . $name . $ext;
}
}
}
$defaultPath = $paths[0];
if ($this->plugin) {
$pluginPaths = App::path('plugins');
foreach ($paths as $path) {
if (strpos($path, $pluginPaths[0]) === 0) {
$defaultPath = $path;
break;
}
}
}
throw new MissingViewException(array('file' => $defaultPath . $name . $this->ext));
}
/**
* Returns layout filename for this template as a string.
*
* @param string $name The name of the layout to find.
* @return string Filename for layout file (.ctp).
* @throws MissingLayoutException when a layout cannot be located
*/
protected function _getLayoutFileName($name = null) {
if ($name === null) {
$name = $this->layout;
}
$subDir = null;
if (!is_null($this->layoutPath)) {
$subDir = $this->layoutPath . DS;
}
$paths = $this->_paths(Inflector::underscore($this->plugin));
$file = 'layouts' . DS . $subDir . $name;
$exts = array($this->ext);
if ($this->ext !== '.ctp') {
array_push($exts, '.ctp');
}
foreach ($exts as $ext) {
foreach ($paths as $path) {
if (file_exists($path . $file . $ext)) {
return $path . $file . $ext;
}
}
}
throw new MissingLayoutException(array('file' => $paths[0] . $file . $this->ext));
}
/**
* Return all possible paths to find view files in order
*
* @param string $plugin Optional plugin name to scan for view files.
* @param boolean $cached Set to true to force a refresh of view paths.
* @return array paths
*/
protected function _paths($plugin = null, $cached = true) {
if ($plugin === null && $cached === true && !empty($this->__paths)) {
return $this->__paths;
}
$paths = array();
$viewPaths = App::path('views');
$corePaths = array_flip(App::core('views'));
if (!empty($plugin)) {
$count = count($viewPaths);
for ($i = 0; $i < $count; $i++) {
if (!isset($corePaths[$viewPaths[$i]])) {
$paths[] = $viewPaths[$i] . 'plugins' . DS . $plugin . DS;
}
}
$paths[] = App::pluginPath($plugin) . 'views' . DS;
}
$this->__paths = array_merge($paths, $viewPaths);
return $this->__paths;
}
}