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<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 0.10.0
* @license https://www.opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\View;
use Cake\Cache\Cache;
use Cake\Core\App;
use Cake\Core\Plugin;
use Cake\Event\EventDispatcherInterface;
use Cake\Event\EventDispatcherTrait;
use Cake\Event\EventManager;
use Cake\Http\Response;
use Cake\Http\ServerRequest;
use Cake\Log\LogTrait;
use Cake\Routing\RequestActionTrait;
use Cake\Routing\Router;
use Cake\Utility\Inflector;
use Cake\View\Exception\MissingElementException;
use Cake\View\Exception\MissingLayoutException;
use Cake\View\Exception\MissingTemplateException;
use InvalidArgumentException;
use LogicException;
use RuntimeException;
/**
* View, the V in the MVC triad. View interacts with Helpers and view variables passed
* in from the controller to render the results of the controller action. Often this is HTML,
* but can also take the form of JSON, XML, PDF's or streaming files.
*
* CakePHP uses a two-step-view pattern. This means that the template content is rendered first,
* and then inserted into the selected layout. This also means you can pass data from the template to the
* layout using `$this->set()`
*
* View class supports using plugins as themes. You can set
*
* ```
* public function beforeRender(\Cake\Event\Event $event)
* {
* $this->viewBuilder()->setTheme('SuperHot');
* }
* ```
*
* in your Controller to use plugin `SuperHot` as a theme. Eg. If current action
* is PostsController::index() then View class will look for template file
* `plugins/SuperHot/Template/Posts/index.ctp`. If a theme template
* is not found for the current action the default app template file is used.
*
* @property \Cake\View\Helper\BreadCrumbsHelper $BreadCrumbs
* @property \Cake\View\Helper\FlashHelper $Flash
* @property \Cake\View\Helper\FormHelper $Form
* @property \Cake\View\Helper\HtmlHelper $Html
* @property \Cake\View\Helper\NumberHelper $Number
* @property \Cake\View\Helper\PaginatorHelper $Paginator
* @property \Cake\View\Helper\RssHelper $Rss
* @property \Cake\View\Helper\SessionHelper $Session
* @property \Cake\View\Helper\TextHelper $Text
* @property \Cake\View\Helper\TimeHelper $Time
* @property \Cake\View\Helper\UrlHelper $Url
* @property \Cake\View\ViewBlock $Blocks
* @property string $view
* @property string $viewPath
*/
class View implements EventDispatcherInterface
{
use CellTrait {
cell as public;
}
use EventDispatcherTrait;
use LogTrait;
use RequestActionTrait;
use ViewVarsTrait;
/**
* Helpers collection
*
* @var \Cake\View\HelperRegistry
*/
protected $_helpers;
/**
* ViewBlock instance.
*
* @var \Cake\View\ViewBlock
*/
public $Blocks;
/**
* The name of the plugin.
*
* @var string
*/
public $plugin;
/**
* Name of the controller that created the View if any.
*
* @var string
*/
public $name;
/**
* Current passed params. Passed to View from the creating Controller for convenience.
*
* @var array
* @deprecated 3.1.0 Use `$this->request->getParam('pass')` instead.
*/
public $passedArgs = [];
/**
* An array of names of built-in helpers to include.
*
* @var array
*/
public $helpers = [];
/**
* The name of the subfolder containing templates for this View.
*
* @var string
*/
public $templatePath;
/**
* The name of the template file to render. The name specified
* is the filename in /src/Template/<SubFolder> without the .ctp extension.
*
* @var string
*/
public $template;
/**
* The name of the layout file to render the template inside of. The name specified
* is the filename of the layout in /src/Template/Layout without the .ctp
* extension.
*
* @var string
*/
public $layout = 'default';
/**
* The name of the layouts subfolder containing layouts for this View.
*
* @var string
*/
public $layoutPath;
/**
* Turns on or off CakePHP's conventional mode of applying layout files. On by default.
* Setting to off means that layouts will not be automatically applied to rendered templates.
*
* @var bool
*/
public $autoLayout = true;
/**
* File extension. Defaults to CakePHP's template ".ctp".
*
* @var string
*/
protected $_ext = '.ctp';
/**
* Sub-directory for this template file. This is often used for extension based routing.
* Eg. With an `xml` extension, $subDir would be `xml/`
*
* @var string|null
*/
public $subDir;
/**
* The view theme to use.
*
* @var string|null
*/
public $theme;
/**
* True when the view has been rendered.
*
* @var bool
*/
public $hasRendered = false;
/**
* List of generated DOM UUIDs.
*
* @var array
*/
public $uuids = [];
/**
* An instance of a \Cake\Http\ServerRequest object that contains information about the current request.
* This object contains all the information about a request and several methods for reading
* additional information about the request.
*
* @var \Cake\Http\ServerRequest
*/
public $request;
/**
* Reference to the Response object
*
* @var \Cake\Http\Response
*/
public $response;
/**
* The Cache configuration View will use to store cached elements. Changing this will change
* the default configuration elements are stored under. You can also choose a cache config
* per element.
*
* @var string
* @see \Cake\View\View::element()
*/
public $elementCache = 'default';
/**
* List of variables to collect from the associated controller.
*
* @var array
*/
protected $_passedVars = [
'viewVars', 'autoLayout', 'helpers', 'template', 'layout', 'name', 'theme',
'layoutPath', 'templatePath', 'plugin', 'passedArgs'
];
/**
* Holds an array of paths.
*
* @var array
*/
protected $_paths = [];
/**
* Holds an array of plugin paths.
*
* @var array
*/
protected $_pathsForPlugin = [];
/**
* The names of views and their parents used with View::extend();
*
* @var array
*/
protected $_parents = [];
/**
* The currently rendering view file. Used for resolving parent files.
*
* @var string
*/
protected $_current;
/**
* Currently rendering an element. Used for finding parent fragments
* for elements.
*
* @var string
*/
protected $_currentType = '';
/**
* Content stack, used for nested templates that all use View::extend();
*
* @var array
*/
protected $_stack = [];
/**
* ViewBlock class.
*
* @var string
*/
protected $_viewBlockClass = ViewBlock::class;
/**
* Constant for view file type 'view'
*
* @var string
* @deprecated 3.1.0 Use TYPE_TEMPLATE instead.
*/
const TYPE_VIEW = 'view';
/**
* Constant for view file type 'template'.
*
* @var string
*/
const TYPE_TEMPLATE = 'view';
/**
* Constant for view file type 'element'
*
* @var string
*/
const TYPE_ELEMENT = 'element';
/**
* Constant for name of view file 'Element'
*
* @var string
*/
const NAME_ELEMENT = 'Element';
/**
* Constant for view file type 'layout'
*
* @var string
*/
const TYPE_LAYOUT = 'layout';
/**
* Constant for template folder 'Template'
*
* @var string
*/
const NAME_TEMPLATE = 'Template';
/**
* Constructor
*
* @param \Cake\Http\ServerRequest|null $request Request instance.
* @param \Cake\Http\Response|null $response Response instance.
* @param \Cake\Event\EventManager|null $eventManager Event manager instance.
* @param array $viewOptions View options. See View::$_passedVars for list of
* options which get set as class properties.
*/
public function __construct(
ServerRequest $request = null,
Response $response = null,
EventManager $eventManager = null,
array $viewOptions = []
) {
if (isset($viewOptions['view'])) {
$this->setTemplate($viewOptions['view']);
}
if (isset($viewOptions['viewPath'])) {
$this->setTemplatePath($viewOptions['viewPath']);
}
foreach ($this->_passedVars as $var) {
if (isset($viewOptions[$var])) {
$this->{$var} = $viewOptions[$var];
}
}
if ($eventManager !== null) {
$this->setEventManager($eventManager);
}
$this->request = $request ?: Router::getRequest(true);
$this->response = $response ?: new Response();
if (!$this->request) {
$this->request = new ServerRequest([
'base' => '',
'url' => '',
'webroot' => '/'
]);
}
$this->Blocks = new $this->_viewBlockClass();
$this->initialize();
$this->loadHelpers();
}
/**
* Initialization hook method.
*
* Properties like $helpers etc. cannot be initialized statically in your custom
* view class as they are overwritten by values from controller in constructor.
* So this method allows you to manipulate them as required after view instance
* is constructed.
*
* @return void
*/
public function initialize()
{
}
/**
* Get path for templates files.
*
* @return string
*/
public function getTemplatePath()
{
return $this->templatePath;
}
/**
* Set path for templates files.
*
* @param string $path Path for template files.
* @return $this
*/
public function setTemplatePath($path)
{
$this->templatePath = $path;
return $this;
}
/**
* Get/set path for templates files.
*
* @deprecated 3.5.0 Use getTemplatePath()/setTemplatePath() instead.
* @param string|null $path Path for template files. If null returns current path.
* @return string|null
*/
public function templatePath($path = null)
{
deprecationWarning(
'View::templatePath() is deprecated. ' .
'Use getTemplatePath()/setTemplatePath() instead.'
);
if ($path === null) {
return $this->templatePath;
}
$this->templatePath = $path;
}
/**
* Get path for layout files.
*
* @return string
*/
public function getLayoutPath()
{
return $this->layoutPath;
}
/**
* Set path for layout files.
*
* @param string $path Path for layout files.
* @return $this
*/
public function setLayoutPath($path)
{
$this->layoutPath = $path;
return $this;
}
/**
* Get/set path for layout files.
*
* @deprecated 3.5.0 Use getLayoutPath()/setLayoutPath() instead.
* @param string|null $path Path for layout files. If null returns current path.
* @return string|null
*/
public function layoutPath($path = null)
{
deprecationWarning(
'View::layoutPath() is deprecated. ' .
'Use getLayoutPath()/setLayoutPath() instead.'
);
if ($path === null) {
return $this->layoutPath;
}
$this->layoutPath = $path;
}
/**
* Returns if CakePHP's conventional mode of applying layout files is enabled.
* Disabled means that layouts will not be automatically applied to rendered views.
*
* @return bool
*/
public function isAutoLayoutEnabled()
{
return $this->autoLayout;
}
/**
* Turns on or off CakePHP's conventional mode of applying layout files.
* On by default. Setting to off means that layouts will not be
* automatically applied to rendered views.
*
* @param bool $enable Boolean to turn on/off.
* @return $this
*/
public function enableAutoLayout($enable = true)
{
$this->autoLayout = (bool)$enable;
return $this;
}
/**
* Turns on or off CakePHP's conventional mode of applying layout files.
* On by default. Setting to off means that layouts will not be
* automatically applied to rendered templates.
*
* @deprecated 3.5.0 Use isAutoLayoutEnabled()/enableAutoLayout() instead.
* @param bool|null $autoLayout Boolean to turn on/off. If null returns current value.
* @return bool|null
*/
public function autoLayout($autoLayout = null)
{
deprecationWarning(
'View::autoLayout() is deprecated. ' .
'Use isAutoLayoutEnabled()/enableAutoLayout() instead.'
);
if ($autoLayout === null) {
return $this->autoLayout;
}
$this->autoLayout = $autoLayout;
}
/**
* Get the current view theme.
*
* @return string|null
*/
public function getTheme()
{
return $this->theme;
}
/**
* Set the view theme to use.
*
* @param string|null $theme Theme name.
* @return $this
*/
public function setTheme($theme)
{
$this->theme = $theme;
return $this;
}
/**
* The view theme to use.
*
* @deprecated 3.5.0 Use getTheme()/setTheme() instead.
* @param string|null $theme Theme name. If null returns current theme.
* @return string|null
*/
public function theme($theme = null)
{
deprecationWarning(
'View::theme() is deprecated. ' .
'Use getTheme()/setTheme() instead.'
);
if ($theme === null) {
return $this->theme;
}
$this->theme = $theme;
}
/**
* Get the name of the template file to render. The name specified is the
* filename in /src/Template/<SubFolder> without the .ctp extension.
*
* @return string
*/
public function getTemplate()
{
return $this->template;
}
/**
* Set the name of the template file to render. The name specified is the
* filename in /src/Template/<SubFolder> without the .ctp extension.
*
* @param string $name Template file name to set.
* @return $this
*/
public function setTemplate($name)
{
$this->template = $name;
return $this;
}
/**
* Get/set the name of the template file to render. The name specified is the
* filename in /src/Template/<SubFolder> without the .ctp extension.
*
* @deprecated 3.5.0 Use getTemplate()/setTemplate() instead.
* @param string|null $name Template file name to set. If null returns current name.
* @return string|null
*/
public function template($name = null)
{
deprecationWarning(
'View::template() is deprecated. ' .
'Use getTemplate()/setTemplate() instead.'
);
if ($name === null) {
return $this->template;
}
$this->template = $name;
}
/**
* Get the name of the layout file to render the template inside of.
* The name specified is the filename of the layout in /src/Template/Layout
* without the .ctp extension.
*
* @return string
*/
public function getLayout()
{
return $this->layout;
}
/**
* Set the name of the layout file to render the template inside of.
* The name specified is the filename of the layout in /src/Template/Layout
* without the .ctp extension.
*
* @param string $name Layout file name to set.
* @return $this
*/
public function setLayout($name)
{
$this->layout = $name;
return $this;
}
/**
* Get/set the name of the layout file to render the template inside of.
* The name specified is the filename of the layout in /src/Template/Layout
* without the .ctp extension.
*
* @deprecated 3.5.0 Use getLayout()/setLayout() instead.
* @param string|null $name Layout file name to set. If null returns current name.
* @return string|null
*/
public function layout($name = null)
{
deprecationWarning(
'View::layout() is deprecated. ' .
'Use getLayout()/setLayout() instead.'
);
if ($name === null) {
return $this->layout;
}
$this->layout = $name;
}
/**
* 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 improving performance by using the `cache` option.
*
* @param string $name Name of template file in the /src/Template/Element/ folder,
* or `MyPlugin.template` to use the template element from MyPlugin. If the element
* is not found in the plugin, the normal view path cascade will be searched.
* @param array $data Array of data to be made available to the rendered view (i.e. the Element)
* @param array $options Array of options. Possible keys are:
* - `cache` - Can either be `true`, to enable caching using the config in View::$elementCache. Or an array
* If an array, the following keys can be used:
* - `config` - Used to store the cached element in a custom cache configuration.
* - `key` - Used to define the key used in the Cache::write(). It will be prefixed with `element_`
* - `callbacks` - Set to true to fire beforeRender and afterRender helper callbacks for this element.
* Defaults to false.
* - `ignoreMissing` - Used to allow missing elements. Set to true to not throw exceptions.
* - `plugin` - setting to false will force to use the application's element from plugin templates, when the
* plugin has element with same name. Defaults to true
* @return string Rendered Element
* @throws \Cake\View\Exception\MissingElementException When an element is missing and `ignoreMissing`
* is false.
*/
public function element($name, array $data = [], array $options = [])
{
$options += ['callbacks' => false, 'cache' => null, 'plugin' => null];
if (isset($options['cache'])) {
$options['cache'] = $this->_elementCache($name, $data, $options);
}
$pluginCheck = $options['plugin'] !== false;
$file = $this->_getElementFileName($name, $pluginCheck);
if ($file && $options['cache']) {
return $this->cache(function () use ($file, $data, $options) {
echo $this->_renderElement($file, $data, $options);
}, $options['cache']);
}
if ($file) {
return $this->_renderElement($file, $data, $options);
}
if (empty($options['ignoreMissing'])) {
list ($plugin, $name) = pluginSplit($name, true);
$name = str_replace('/', DIRECTORY_SEPARATOR, $name);
$file = $plugin . static::NAME_ELEMENT . DIRECTORY_SEPARATOR . $name . $this->_ext;
throw new MissingElementException([$file]);
}
}
/**
* Create a cached block of view logic.
*
* This allows you to cache a block of view output into the cache
* defined in `elementCache`.
*
* This method will attempt to read the cache first. If the cache
* is empty, the $block will be run and the output stored.
*
* @param callable $block The block of code that you want to cache the output of.
* @param array $options The options defining the cache key etc.
* @return string The rendered content.
* @throws \RuntimeException When $options is lacking a 'key' option.
*/
public function cache(callable $block, array $options = [])
{
$options += ['key' => '', 'config' => $this->elementCache];
if (empty($options['key'])) {
throw new RuntimeException('Cannot cache content with an empty key');
}
$result = Cache::read($options['key'], $options['config']);
if ($result) {
return $result;
}
ob_start();
$block();
$result = ob_get_clean();
Cache::write($options['key'], $result, $options['config']);
return $result;
}
/**
* Checks if an element exists
*
* @param string $name Name of template file in the /src/Template/Element/ folder,
* or `MyPlugin.template` to check the template element from MyPlugin. If the element
* is not found in the plugin, the normal view path cascade will be searched.
* @return bool Success
*/
public function elementExists($name)
{
return (bool)$this->_getElementFileName($name);
}
/**
* Renders view for given template file and layout.
*
* Render triggers helper callbacks, which are fired before and after the template are rendered,
* as well as before and after the layout. The helper callbacks are called:
*
* - `beforeRender`
* - `afterRender`
* - `beforeLayout`
* - `afterLayout`
*
* If View::$autoRender is false and no `$layout` is provided, the template will be returned bare.
*
* Template and layout names can point to plugin templates/layouts. Using the `Plugin.template` syntax
* a plugin template/layout can be used instead of the app ones. If the chosen plugin is not found
* the template will be located along the regular view path cascade.
*
* @param string|false|null $view Name of view file to use
* @param string|null $layout Layout to use.
* @return string|null Rendered content or null if content already rendered and returned earlier.
* @throws \Cake\Core\Exception\Exception If there is an error in the view.
* @triggers View.beforeRender $this, [$viewFileName]
* @triggers View.afterRender $this, [$viewFileName]
*/
public function render($view = null, $layout = null)
{
if ($this->hasRendered) {
return null;
}
$defaultLayout = null;
if ($layout !== null) {
$defaultLayout = $this->layout;
$this->layout = $layout;
}
$viewFileName = $view !== false ? $this->_getViewFileName($view) : null;
if ($viewFileName) {
$this->_currentType = static::TYPE_TEMPLATE;
$this->dispatchEvent('View.beforeRender', [$viewFileName]);
$this->Blocks->set('content', $this->_render($viewFileName));
$this->dispatchEvent('View.afterRender', [$viewFileName]);
}
if ($this->layout && $this->autoLayout) {
$this->Blocks->set('content', $this->renderLayout('', $this->layout));
}
if ($layout !== null) {
$this->layout = $defaultLayout;
}
$this->hasRendered = true;
return $this->Blocks->get('content');
}
/**
* Renders a layout. Returns output from _render(). Returns false on error.
* Several variables are created for use in layout.
*
* @param string $content Content to render in a template, wrapped by the surrounding layout.
* @param string|null $layout Layout name
* @return mixed Rendered output, or false on error
* @throws \Cake\Core\Exception\Exception if there is an error in the view.
* @triggers View.beforeLayout $this, [$layoutFileName]
* @triggers View.afterLayout $this, [$layoutFileName]
*/
public function renderLayout($content, $layout = null)
{
$layoutFileName = $this->_getLayoutFileName($layout);
if (empty($layoutFileName)) {
return $this->Blocks->get('content');
}
if (!empty($content)) {
$this->Blocks->set('content', $content);
}
$this->dispatchEvent('View.beforeLayout', [$layoutFileName]);
$title = $this->Blocks->get('title');
if ($title === '') {
$title = Inflector::humanize($this->templatePath);
$this->Blocks->set('title', $title);
}
$this->_currentType = static::TYPE_LAYOUT;
$this->Blocks->set('content', $this->_render($layoutFileName));
$this->dispatchEvent('View.afterLayout', [$layoutFileName]);
return $this->Blocks->get('content');
}
/**
* Returns a list of variables available in the current View context
*
* @return array Array of the set view variable names.
*/
public function getVars()
{
return array_keys($this->viewVars);
}
/**
* Returns the contents of the given View variable.
*
* @param string $var The view var you want the contents of.
* @param mixed $default The default/fallback content of $var.
* @return mixed The content of the named var if its set, otherwise $default.
*/
public function get($var, $default = null)
{
if (!isset($this->viewVars[$var])) {
return $default;
}
return $this->viewVars[$var];
}
/**
* Get the names of all the existing blocks.
*
* @return array An array containing the blocks.
* @see \Cake\View\ViewBlock::keys()
*/
public function blocks()
{
return $this->Blocks->keys();
}
/**
* Start capturing output for a 'block'
*
* You can use start on a block multiple times to
* append or prepend content in a capture mode.
*
* ```
* // Append content to an existing block.
* $this->start('content');
* echo $this->fetch('content');
* echo 'Some new content';
* $this->end();
*
* // Prepend content to an existing block
* $this->start('content');
* echo 'Some new content';
* echo $this->fetch('content');
* $this->end();
* ```
*
* @param string $name The name of the block to capture for.
* @return $this
* @see \Cake\View\ViewBlock::start()
*/
public function start($name)
{
$this->Blocks->start($name);
return $this;
}
/**
* Append to an existing or new block.
*
* Appending to a new block will create the block.
*
* @param string $name Name of the block
* @param mixed $value The content for the block. Value will be type cast
* to string.
* @return $this
* @see \Cake\View\ViewBlock::concat()
*/
public function append($name, $value = null)
{
$this->Blocks->concat($name, $value);
return $this;
}
/**
* Prepend to an existing or new block.
*
* Prepending to a new block will create the block.
*
* @param string $name Name of the block
* @param mixed $value The content for the block. Value will be type cast
* to string.
* @return $this
* @see \Cake\View\ViewBlock::concat()
*/
public function prepend($name, $value)
{
$this->Blocks->concat($name, $value, ViewBlock::PREPEND);
return $this;
}
/**
* Set the content for a block. This will overwrite any
* existing content.
*
* @param string $name Name of the block
* @param mixed $value The content for the block. Value will be type cast
* to string.
* @return $this
* @see \Cake\View\ViewBlock::set()
*/
public function assign($name, $value)
{
$this->Blocks->set($name, $value);
return $this;
}
/**
* Reset the content for a block. This will overwrite any
* existing content.
*
* @param string $name Name of the block
* @return $this
* @see \Cake\View\ViewBlock::set()
*/
public function reset($name)
{
$this->assign($name, '');
return $this;
}
/**
* Fetch the content for a block. If a block is
* empty or undefined '' will be returned.
*
* @param string $name Name of the block
* @param string $default Default text
* @return string The block content or $default if the block does not exist.
* @see \Cake\View\ViewBlock::get()
*/
public function fetch($name, $default = '')
{
return $this->Blocks->get($name, $default);
}
/**
* End a capturing block. The compliment to View::start()
*
* @return $this
* @see \Cake\View\ViewBlock::end()
*/
public function end()
{
$this->Blocks->end();
return $this;
}
/**
* Check if a block exists
*
* @param string $name Name of the block
*
* @return bool
*/
public function exists($name)
{
return $this->Blocks->exists($name);
}
/**
* Provides template or element extension/inheritance. Views can extends a
* parent view and populate blocks in the parent template.
*
* @param string $name The template or element to 'extend' the current one with.
* @return $this
* @throws \LogicException when you extend a template with itself or make extend loops.
* @throws \LogicException when you extend an element which doesn't exist
*/
public function extend($name)
{
if ($name[0] === '/' || $this->_currentType === static::TYPE_TEMPLATE) {
$parent = $this->_getViewFileName($name);
} else {
switch ($this->_currentType) {
case static::TYPE_ELEMENT:
$parent = $this->_getElementFileName($name);
if (!$parent) {
list($plugin, $name) = $this->pluginSplit($name);
$paths = $this->_paths($plugin);
$defaultPath = $paths[0] . static::NAME_ELEMENT . DIRECTORY_SEPARATOR;
throw new LogicException(sprintf(
'You cannot extend an element which does not exist (%s).',
$defaultPath . $name . $this->_ext
));
}
break;
case static::TYPE_LAYOUT:
$parent = $this->_getLayoutFileName($name);
break;
default:
$parent = $this->_getViewFileName($name);
}
}
if ($parent == $this->_current) {
throw new LogicException('You cannot have views extend themselves.');
}
if (isset($this->_parents[$parent]) && $this->_parents[$parent] == $this->_current) {
throw new LogicException('You cannot have views extend in a loop.');
}
$this->_parents[$this->_current] = $parent;
return $this;
}
/**
* 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;
}
/**
* Retrieve the current view type
*
* @return string
*/
public function getCurrentType()
{
return $this->_currentType;
}
/**
* Magic accessor for helpers.
*
* @param string $name Name of the attribute to get.
* @return mixed
*/
public function __get($name)
{
if ($name === 'view') {
deprecationWarning('The `view` property is deprecated. Use View::getTemplate() instead.');
return $this->template;
}
if ($name === 'viewPath') {
deprecationWarning('The `viewPath` property is deprecated. Use View::getTemplatePath() instead.');
return $this->templatePath;
}
$registry = $this->helpers();
if (isset($registry->{$name})) {
$this->{$name} = $registry->{$name};
return $registry->{$name};
}
return $this->{$name};
}
/**
* Magic setter for deprecated properties.
*
* @param string $name Name to property.
* @param mixed $value Value for property.
* @return void
*/
public function __set($name, $value)
{
if ($name === 'view') {
deprecationWarning('The `view` property is deprecated. Use View::setTemplate() instead.');
$this->template = $value;
return;
}
if ($name === 'viewPath') {
deprecationWarning('The `viewPath` property is deprecated. Use View::setTemplatePath() instead.');
$this->templatePath = $value;
return;
}
$this->{$name} = $value;
}
/**
* Interact with the HelperRegistry to load all the helpers.
*
* @return $this
*/
public function loadHelpers()
{
$registry = $this->helpers();
$helpers = $registry->normalizeArray($this->helpers);
foreach ($helpers as $properties) {
$this->loadHelper($properties['class'], $properties['config']);
}
return $this;
}
/**
* Renders and returns output for given template filename with its
* array of data. Handles parent/extended templates.
*
* @param string $viewFile Filename of the view
* @param array $data Data to include in rendered view. If empty the current
* View::$viewVars will be used.
* @return string Rendered output
* @throws \LogicException When a block is left open.
* @triggers View.beforeRenderFile $this, [$viewFile]
* @triggers View.afterRenderFile $this, [$viewFile, $content]
*/
protected function _render($viewFile, $data = [])
{
if (empty($data)) {
$data = $this->viewVars;
}
$this->_current = $viewFile;
$initialBlocks = count($this->Blocks->unclosed());
$this->dispatchEvent('View.beforeRenderFile', [$viewFile]);
$content = $this->_evaluate($viewFile, $data);
$afterEvent = $this->dispatchEvent('View.afterRenderFile', [$viewFile, $content]);
if ($afterEvent->getResult() !== null) {
$content = $afterEvent->getResult();
}
if (isset($this->_parents[$viewFile])) {
$this->_stack[] = $this->fetch('content');
$this->assign('content', $content);
$content = $this->_render($this->_parents[$viewFile]);
$this->assign('content', array_pop($this->_stack));
}
$remainingBlocks = count($this->Blocks->unclosed());
if ($initialBlocks !== $remainingBlocks) {
throw new LogicException(sprintf(
'The "%s" block was left open. Blocks are not allowed to cross files.',
$this->Blocks->active()
));
}
return $content;
}
/**
* Sandbox method to evaluate a template / view script in.
*
* @param string $viewFile Filename of the view
* @param array $dataForView Data to include in rendered view.
* @return string Rendered output
*/
protected function _evaluate($viewFile, $dataForView)
{
extract($dataForView);
ob_start();
include func_get_arg(0);
return ob_get_clean();
}
/**
* Get the helper registry in use by this View class.
*
* @return \Cake\View\HelperRegistry
*/
public function helpers()
{
if ($this->_helpers === null) {
$this->_helpers = new HelperRegistry($this);
}
return $this->_helpers;
}
/**
* Loads a helper. Delegates to the `HelperRegistry::load()` to load the helper
*
* @param string $name Name of the helper to load.
* @param array $config Settings for the helper
* @return \Cake\View\Helper a constructed helper object.
* @see \Cake\View\HelperRegistry::load()
*/
public function loadHelper($name, array $config = [])
{
list(, $class) = pluginSplit($name);
$helpers = $this->helpers();
return $this->{$class} = $helpers->load($name, $config);
}
/**
* Returns filename of given action's template file (.ctp) as a string.
* CamelCased action names will be under_scored by default.
* This means that you can have LongActionNames that refer to
* long_action_names.ctp views. You can change the inflection rule by
* overriding _inflectViewFileName.
*
* @param string|null $name Controller action to find template filename for
* @return string Template filename
* @throws \Cake\View\Exception\MissingTemplateException when a view file could not be found.
*/
protected function _getViewFileName($name = null)
{
$templatePath = $subDir = '';
if ($this->templatePath) {
$templatePath = $this->templatePath . DIRECTORY_SEPARATOR;
}
if (strlen($this->subDir)) {
$subDir = $this->subDir . DIRECTORY_SEPARATOR;
// Check if templatePath already terminates with subDir
if ($templatePath != $subDir && substr($templatePath, -(strlen($subDir))) == $subDir) {
$subDir = '';
}
}
if ($name === null) {
$name = $this->template;
}
list($plugin, $name) = $this->pluginSplit($name);
$name = str_replace('/', DIRECTORY_SEPARATOR, $name);
if (strpos($name, DIRECTORY_SEPARATOR) === false && $name !== '' && $name[0] !== '.') {
$name = $templatePath . $subDir . $this->_inflectViewFileName($name);
} elseif (strpos($name, DIRECTORY_SEPARATOR) !== false) {
if ($name[0] === DIRECTORY_SEPARATOR || $name[1] === ':') {
$name = trim($name, DIRECTORY_SEPARATOR);
} elseif (!$plugin || $this->templatePath !== $this->name) {
$name = $templatePath . $subDir . $name;
} else {
$name = DIRECTORY_SEPARATOR . $subDir . $name;
}
}
foreach ($this->_paths($plugin) as $path) {
if (file_exists($path . $name . $this->_ext)) {
return $this->_checkFilePath($path . $name . $this->_ext, $path);
}
}
throw new MissingTemplateException(['file' => $name . $this->_ext]);
}
/**
* Change the name of a view template file into underscored format.
*
* @param string $name Name of file which should be inflected.
* @return string File name after conversion
*/
protected function _inflectViewFileName($name)
{
return Inflector::underscore($name);
}
/**
* Check that a view file path does not go outside of the defined template paths.
*
* Only paths that contain `..` will be checked, as they are the ones most likely to
* have the ability to resolve to files outside of the template paths.
*
* @param string $file The path to the template file.
* @param string $path Base path that $file should be inside of.
* @return string The file path
* @throws \InvalidArgumentException
*/
protected function _checkFilePath($file, $path)
{
if (strpos($file, '..') === false) {
return $file;
}
$absolute = realpath($file);
if (strpos($absolute, $path) !== 0) {
throw new InvalidArgumentException(sprintf(
'Cannot use "%s" as a template, it is not within any view template path.',
$file
));
}
return $absolute;
}
/**
* Splits a dot syntax plugin name into its plugin and filename.
* If $name does not have a dot, then index 0 will be null.
* It checks if the plugin is loaded, else filename will stay unchanged for filenames containing dot
*
* @param string $name The name you want to plugin split.
* @param bool $fallback If true uses the plugin set in the current Request when parsed plugin is not loaded
* @return array Array with 2 indexes. 0 => plugin name, 1 => filename
*/
public function pluginSplit($name, $fallback = true)
{
$plugin = null;
list($first, $second) = pluginSplit($name);
if (Plugin::loaded($first) === true) {
$name = $second;
$plugin = $first;
}
if (isset($this->plugin) && !$plugin && $fallback) {
$plugin = $this->plugin;
}
return [$plugin, $name];
}
/**
* Returns layout filename for this template as a string.
*
* @param string|null $name The name of the layout to find.
* @return string Filename for layout file (.ctp).
* @throws \Cake\View\Exception\MissingLayoutException when a layout cannot be located
*/
protected function _getLayoutFileName($name = null)
{
if ($name === null) {
$name = $this->layout;
}
$subDir = null;
if ($this->layoutPath) {
$subDir = $this->layoutPath . DIRECTORY_SEPARATOR;
}
list($plugin, $name) = $this->pluginSplit($name);
$layoutPaths = $this->_getSubPaths('Layout' . DIRECTORY_SEPARATOR . $subDir);
foreach ($this->_paths($plugin) as $path) {
foreach ($layoutPaths as $layoutPath) {
$currentPath = $path . $layoutPath;
if (file_exists($currentPath . $name . $this->_ext)) {
return $this->_checkFilePath($currentPath . $name . $this->_ext, $currentPath);
}
}
}
throw new MissingLayoutException([
'file' => $layoutPaths[0] . $name . $this->_ext
]);
}
/**
* Finds an element filename, returns false on failure.
*
* @param string $name The name of the element to find.
* @param bool $pluginCheck - if false will ignore the request's plugin if parsed plugin is not loaded
* @return string|false Either a string to the element filename or false when one can't be found.
*/
protected function _getElementFileName($name, $pluginCheck = true)
{
list($plugin, $name) = $this->pluginSplit($name, $pluginCheck);
$paths = $this->_paths($plugin);
$elementPaths = $this->_getSubPaths(static::NAME_ELEMENT);
foreach ($paths as $path) {
foreach ($elementPaths as $elementPath) {
if (file_exists($path . $elementPath . DIRECTORY_SEPARATOR . $name . $this->_ext)) {
return $path . $elementPath . DIRECTORY_SEPARATOR . $name . $this->_ext;
}
}
}
return false;
}
/**
* Find all sub templates path, based on $basePath
* If a prefix is defined in the current request, this method will prepend
* the prefixed template path to the $basePath, cascading up in case the prefix
* is nested.
* This is essentially used to find prefixed template paths for elements
* and layouts.
*
* @param string $basePath Base path on which to get the prefixed one.
* @return array Array with all the templates paths.
*/
protected function _getSubPaths($basePath)
{
$paths = [$basePath];
if ($this->request->getParam('prefix')) {
$prefixPath = explode('/', $this->request->getParam('prefix'));
$path = '';
foreach ($prefixPath as $prefixPart) {
$path .= Inflector::camelize($prefixPart) . DIRECTORY_SEPARATOR;
array_unshift(
$paths,
$path . $basePath
);
}
}
return $paths;
}
/**
* Return all possible paths to find view files in order
*
* @param string|null $plugin Optional plugin name to scan for view files.
* @param bool $cached Set to false to force a refresh of view paths. Default true.
* @return array paths
*/
protected function _paths($plugin = null, $cached = true)
{
if ($cached === true) {
if ($plugin === null && !empty($this->_paths)) {
return $this->_paths;
}
if ($plugin !== null && isset($this->_pathsForPlugin[$plugin])) {
return $this->_pathsForPlugin[$plugin];
}
}
$templatePaths = App::path(static::NAME_TEMPLATE);
$pluginPaths = $themePaths = [];
if (!empty($plugin)) {
for ($i = 0, $count = count($templatePaths); $i < $count; $i++) {
$pluginPaths[] = $templatePaths[$i] . 'Plugin' . DIRECTORY_SEPARATOR . $plugin . DIRECTORY_SEPARATOR;
}
$pluginPaths = array_merge($pluginPaths, App::path(static::NAME_TEMPLATE, $plugin));
}
if (!empty($this->theme)) {
$themePaths = App::path(static::NAME_TEMPLATE, Inflector::camelize($this->theme));
if ($plugin) {
for ($i = 0, $count = count($themePaths); $i < $count; $i++) {
array_unshift($themePaths, $themePaths[$i] . 'Plugin' . DIRECTORY_SEPARATOR . $plugin . DIRECTORY_SEPARATOR);
}
}
}
$paths = array_merge(
$themePaths,
$pluginPaths,
$templatePaths,
[dirname(__DIR__) . DIRECTORY_SEPARATOR . static::NAME_TEMPLATE . DIRECTORY_SEPARATOR]
);
if ($plugin !== null) {
return $this->_pathsForPlugin[$plugin] = $paths;
}
return $this->_paths = $paths;
}
/**
* Generate the cache configuration options for an element.
*
* @param string $name Element name
* @param array $data Data
* @param array $options Element options
* @return array Element Cache configuration.
*/
protected function _elementCache($name, $data, $options)
{
if (isset($options['cache']['key'], $options['cache']['config'])) {
$cache = $options['cache'];
$cache['key'] = 'element_' . $cache['key'];
return $cache;
}
$plugin = null;
list($plugin, $name) = $this->pluginSplit($name);
$underscored = null;
if ($plugin) {
$underscored = Inflector::underscore($plugin);
}
$cache = $options['cache'];
unset($options['cache'], $options['callbacks'], $options['plugin']);
$keys = array_merge(
[$underscored, $name],
array_keys($options),
array_keys($data)
);
$config = [
'config' => $this->elementCache,
'key' => implode('_', $keys)
];
if (is_array($cache)) {
$defaults = [
'config' => $this->elementCache,
'key' => $config['key']
];
$config = $cache + $defaults;
}
$config['key'] = 'element_' . $config['key'];
return $config;
}
/**
* Renders an element and fires the before and afterRender callbacks for it
* and writes to the cache if a cache is used
*
* @param string $file Element file path
* @param array $data Data to render
* @param array $options Element options
* @return string
* @triggers View.beforeRender $this, [$file]
* @triggers View.afterRender $this, [$file, $element]
*/
protected function _renderElement($file, $data, $options)
{
$current = $this->_current;
$restore = $this->_currentType;
$this->_currentType = static::TYPE_ELEMENT;
if ($options['callbacks']) {
$this->dispatchEvent('View.beforeRender', [$file]);
}
$element = $this->_render($file, array_merge($this->viewVars, $data));
if ($options['callbacks']) {
$this->dispatchEvent('View.afterRender', [$file, $element]);
}
$this->_currentType = $restore;
$this->_current = $current;
return $element;
}
}