mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-12-24 14:37:25 +00:00
803 lines
21 KiB
PHP
803 lines
21 KiB
PHP
<?php
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/**
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* Methods for displaying presentation data in the view.
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*
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* PHP 5
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright 2005-2010, Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package cake.libs.view
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* @since CakePHP(tm) v 0.10.0.1076
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* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
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*/
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/**
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* Included libraries.
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*/
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App::import('View', 'HelperCollection', false);
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App::import('View', 'Helper', false);
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/**
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* View, the V in the MVC triad. View interacts with Helpers and view variables passed
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* in from the controller to render the results of the controller action. Often this is HTML,
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* but can also take the form of JSON, XML, PDF's or streaming files.
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*
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* CakePHP uses a two-step-view pattern. This means that the view content is rendered first,
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* and then inserted into the selected layout. A special `$content_for_layout` variable is available
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* in the layout, and it contains the rendered view. This also means you can pass data from the view to the
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* layout using `$this->set()`
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*
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* @package cake.libs.view
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*/
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class View extends Object {
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/**
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* Helpers collection
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*
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* @var HelperCollection
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*/
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public $Helpers;
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/**
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* Name of the plugin.
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*
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* @link http://manual.cakephp.org/chapter/plugins
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* @var string
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*/
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public $plugin = null;
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/**
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* Name of the controller.
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*
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* @var string Name of controller
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*/
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public $name = null;
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/**
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* Current passed params
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*
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* @var mixed
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*/
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public $passedArgs = array();
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/**
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* An array of names of built-in helpers to include.
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*
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* @var mixed A single name as a string or a list of names as an array.
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*/
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public $helpers = array('Html');
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/**
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* Path to View.
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*
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* @var string Path to View
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*/
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public $viewPath = null;
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/**
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* Variables for the view
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*
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* @var array
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*/
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public $viewVars = array();
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/**
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* Name of layout to use with this View.
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*
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* @var string
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*/
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public $layout = 'default';
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/**
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* Path to Layout.
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*
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* @var string Path to Layout
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*/
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public $layoutPath = null;
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/**
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* Turns on or off Cake's conventional mode of applying layout files. On by default.
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* Setting to off means that layouts will not be automatically applied to rendered views.
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*
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* @var boolean
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*/
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public $autoLayout = true;
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/**
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* File extension. Defaults to Cake's template ".ctp".
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*
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* @var string
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*/
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public $ext = '.ctp';
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/**
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* Sub-directory for this view file. This is often used for extension based routing.
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* for example with an `xml` extension, $subDir would be `xml/`
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*
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* @var string
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*/
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public $subDir = null;
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/**
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* Theme name. If you are using themes, you should remember to use ThemeView as well.
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*
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* @var string
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*/
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public $theme = null;
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/**
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* Used to define methods a controller that will be cached.
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*
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* @see Controller::$cacheAction
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* @var mixed
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*/
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public $cacheAction = false;
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/**
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* holds current errors for the model validation
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*
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* @var array
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*/
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public $validationErrors = array();
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/**
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* True when the view has been rendered.
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*
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* @var boolean
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*/
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public $hasRendered = false;
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/**
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* True if in scope of model-specific region
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*
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* @var boolean
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*/
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public $modelScope = false;
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/**
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* Name of current model this view context is attached to
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*
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* @var string
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*/
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public $model = null;
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/**
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* Name of association model this view context is attached to
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*
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* @var string
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*/
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public $association = null;
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/**
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* Name of current model field this view context is attached to
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*
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* @var string
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*/
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public $field = null;
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/**
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* Suffix of current field this view context is attached to
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*
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* @var string
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*/
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public $fieldSuffix = null;
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/**
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* The current model ID this view context is attached to
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*
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* @var mixed
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*/
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public $modelId = null;
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/**
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* List of generated DOM UUIDs
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*
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* @var array
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*/
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public $uuids = array();
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/**
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* Holds View output.
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*
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* @var string
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*/
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public $output = false;
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/**
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* An instance of a CakeRequest object that contains information about the current request.
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* This object contains all the information about a request and several methods for reading
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* additional information about the request.
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*
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* @var CakeRequest
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*/
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public $request;
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/**
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* The Cache configuration View will use to store cached elements. Changing this will change
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* the default configuration elements are stored under. You can also choose a cache config
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* per element.
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*
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* @var string
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* @see View::element()
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*/
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public $elementCache = 'default';
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/**
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* List of variables to collect from the associated controller
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*
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* @var array
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*/
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private $__passedVars = array(
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'viewVars', 'autoLayout', 'ext', 'helpers', 'layout', 'name',
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'layoutPath', 'viewPath', 'request', 'plugin', 'passedArgs', 'cacheAction'
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);
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/**
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* Scripts (and/or other <head /> tags) for the layout
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*
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* @var array
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*/
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protected $_scripts = array();
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/**
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* Holds an array of paths.
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*
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* @var array
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*/
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private $__paths = array();
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/**
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* boolean to indicate that helpers have been loaded.
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*
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* @var boolean
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*/
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protected $_helpersLoaded = false;
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/**
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* Constructor
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*
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* @param Controller $controller A controller object to pull View::__passedArgs from.
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*/
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function __construct($controller) {
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if (is_object($controller)) {
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$count = count($this->__passedVars);
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for ($j = 0; $j < $count; $j++) {
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$var = $this->__passedVars[$j];
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$this->{$var} = $controller->{$var};
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}
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}
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$this->Helpers = new HelperCollection($this);
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parent::__construct();
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}
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/**
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* Renders a piece of PHP with provided parameters and returns HTML, XML, or any other string.
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*
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* This realizes the concept of Elements, (or "partial layouts") and the $params array is used to send
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* data to be used in the element. Elements can be cached improving performance by using the `cache` option.
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*
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* ### Special params
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*
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* - `cache` - Can either be `true`, to enable caching using the config in View::$elementCache. Or an array
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* If an array, the following keys can be used:
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* - `config` - Used to store the cached element in a custom cache configuration.
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* - `key` - Used to define the key used in the Cache::write(). It will be prefixed with `element_`
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* - `plugin` - Load an element from a specific plugin.
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*
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* @param string $name Name of template file in the/app/views/elements/ folder
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* @param array $params Array of data to be made available to the for rendered
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* view (i.e. the Element)
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* @param boolean $callbacks Set to true to fire beforeRender and afterRender helper callbacks for this element.
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* Defaults to false.
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* @return string Rendered Element
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*/
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public function element($name, $params = array(), $callbacks = false) {
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$file = $plugin = $key = null;
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if (isset($params['plugin'])) {
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$plugin = $params['plugin'];
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}
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if (isset($this->plugin) && !$plugin) {
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$plugin = $this->plugin;
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}
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if (isset($params['cache'])) {
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$keys = array_merge(array($plugin, $name), array_keys($params));
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$caching = array(
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'config' => $this->elementCache,
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'key' => implode('_', $keys)
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);
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if (is_array($params['cache'])) {
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$defaults = array(
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'config' => $this->elementCache,
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'key' => $caching['key']
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);
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$caching = array_merge($defaults, $params['cache']);
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}
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$key = 'element_' . $caching['key'];
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$contents = Cache::read($key, $caching['config']);
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if ($contents !== false) {
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return $contents;
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}
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}
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$file = $this->_getElementFilename($name, $plugin);
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if ($file) {
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if (!$this->_helpersLoaded) {
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$this->loadHelpers();
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}
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if ($callbacks) {
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$this->Helpers->trigger('beforeRender', array($file));
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}
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$element = $this->_render($file, array_merge($this->viewVars, $params));
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if ($callbacks) {
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$this->Helpers->trigger('afterRender', array($file, $element));
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}
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if (isset($params['cache'])) {
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Cache::write($key, $element, $caching['config']);
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}
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return $element;
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}
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$file = 'elements' . DS . $name . $this->ext;
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if (Configure::read('debug') > 0) {
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return "Element Not Found: " . $file;
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}
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}
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/**
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* Renders view for given action and layout. If $file is given, that is used
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* for a view filename (e.g. customFunkyView.ctp).
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*
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* Render triggers helper callbacks, which are fired before and after the view are rendered,
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* as well as before and after the layout. The helper callbacks are called
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*
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* - `beforeRender`
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* - `afterRender`
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* - `beforeLayout`
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* - `afterLayout`
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*
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* If View::$autoRender is false and no `$layout` is provided, the view will be returned bare.
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*
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* @param string $action Name of action to render for, this will be used as the filename to render, unless
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* $file is give as well.
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* @param string $layout Layout to use.
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* @param string $file Custom filename for view. Providing this will render a specific file for the given action.
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* @return string Rendered Element
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* @throws CakeException if there is an error in the view.
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*/
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public function render($action = null, $layout = null, $file = null) {
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if ($this->hasRendered) {
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return true;
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}
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if (!$this->_helpersLoaded) {
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$this->loadHelpers();
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}
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$this->output = null;
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if ($file != null) {
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$action = $file;
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}
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if ($action !== false && $viewFileName = $this->_getViewFileName($action)) {
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$this->Helpers->trigger('beforeRender', array($viewFileName));
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$this->output = $this->_render($viewFileName);
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$this->Helpers->trigger('afterRender', array($viewFileName));
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}
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if ($layout === null) {
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$layout = $this->layout;
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}
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if ($this->output === false) {
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throw new CakeException(__("Error in view %s, got no content.", $viewFileName));
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}
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if ($layout && $this->autoLayout) {
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$this->output = $this->renderLayout($this->output, $layout);
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}
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$this->hasRendered = true;
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return $this->output;
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}
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/**
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* Renders a layout. Returns output from _render(). Returns false on error.
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* Several variables are created for use in layout.
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*
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* - `title_for_layout` - A backwards compatible place holder, you should set this value if you want more control.
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* - `content_for_layout` - contains rendered view file
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* - `scripts_for_layout` - contains scripts added to header
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*
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* @param string $content_for_layout Content to render in a view, wrapped by the surrounding layout.
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* @return mixed Rendered output, or false on error
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* @throws CakeException if there is an error in the view.
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*/
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public function renderLayout($content_for_layout, $layout = null) {
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$layoutFileName = $this->_getLayoutFileName($layout);
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if (empty($layoutFileName)) {
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return $this->output;
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}
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if (!$this->_helpersLoaded) {
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$this->loadHelpers();
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}
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$this->Helpers->trigger('beforeLayout', array($layoutFileName));
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$this->viewVars = array_merge($this->viewVars, array(
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'content_for_layout' => $content_for_layout,
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'scripts_for_layout' => implode("\n\t", $this->_scripts),
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));
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if (!isset($this->viewVars['title_for_layout'])) {
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$this->viewVars['title_for_layout'] = Inflector::humanize($this->viewPath);
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}
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$this->output = $this->_render($layoutFileName);
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if ($this->output === false) {
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throw new CakeException(__("Error in layout %s, got no content.", $layoutFileName));
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}
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$this->Helpers->trigger('afterLayout', array($layoutFileName));
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return $this->output;
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}
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/**
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* Render cached view. Works in concert with CacheHelper and Dispatcher to
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* render cached view files.
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*
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* @param string $filename the cache file to include
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* @param string $timeStart the page render start time
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* @return boolean Success of rendering the cached file.
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*/
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public function renderCache($filename, $timeStart) {
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ob_start();
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include ($filename);
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if (Configure::read('debug') > 0 && $this->layout != 'xml') {
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echo "<!-- Cached Render Time: " . round(microtime(true) - $timeStart, 4) . "s -->";
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}
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$out = ob_get_clean();
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if (preg_match('/^<!--cachetime:(\\d+)-->/', $out, $match)) {
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if (time() >= $match['1']) {
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@unlink($filename);
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unset ($out);
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return false;
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} else {
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if ($this->layout === 'xml') {
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header('Content-type: text/xml');
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}
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$commentLength = strlen('<!--cachetime:' . $match['1'] . '-->');
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echo substr($out, $commentLength);
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return true;
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}
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}
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}
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/**
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* Returns a list of variables available in the current View context
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*
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* @return array Array of the set view variable names.
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*/
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public function getVars() {
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return array_keys($this->viewVars);
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}
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/**
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* Returns the contents of the given View variable(s)
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*
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* @param string $var The view var you want the contents of.
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* @return mixed The content of the named var if its set, otherwise null.
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*/
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public function getVar($var) {
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if (!isset($this->viewVars[$var])) {
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return null;
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} else {
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return $this->viewVars[$var];
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}
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}
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/**
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* Adds a script block or other element to be inserted in $scripts_for_layout in
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* the `<head />` of a document layout
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*
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* @param string $name Either the key name for the script, or the script content. Name can be used to
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* update/replace a script element.
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* @param string $content The content of the script being added, optional.
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* @return void
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*/
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public function addScript($name, $content = null) {
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if (empty($content)) {
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if (!in_array($name, array_values($this->_scripts))) {
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$this->_scripts[] = $name;
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}
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} else {
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$this->_scripts[$name] = $content;
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}
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}
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/**
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* Generates a unique, non-random DOM ID for an object, based on the object type and the target URL.
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*
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* @param string $object Type of object, i.e. 'form' or 'link'
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* @param string $url The object's target URL
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* @return string
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*/
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public function uuid($object, $url) {
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$c = 1;
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$url = Router::url($url);
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$hash = $object . substr(md5($object . $url), 0, 10);
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while (in_array($hash, $this->uuids)) {
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$hash = $object . substr(md5($object . $url . $c), 0, 10);
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$c++;
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}
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$this->uuids[] = $hash;
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return $hash;
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}
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/**
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* Returns the entity reference of the current context as an array of identity parts
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*
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* @return array An array containing the identity elements of an entity
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*/
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public function entity() {
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$assoc = ($this->association) ? $this->association : $this->model;
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if (!empty($this->entityPath)) {
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$path = explode('.', $this->entityPath);
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$count = count($path);
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if (
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($count == 1 && !empty($this->association)) ||
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($count == 1 && $this->model != $this->entityPath) ||
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($count == 1 && empty($this->association) && !empty($this->field)) ||
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($count == 2 && !empty($this->fieldSuffix)) ||
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is_numeric($path[0]) && !empty($assoc)
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) {
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array_unshift($path, $assoc);
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}
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return Set::filter($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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
$this->_helpersLoaded = true;
|
|
}
|
|
|
|
/**
|
|
* Renders and returns output for given view filename with its
|
|
* array of data.
|
|
*
|
|
* @param string $___viewFn Filename of the view
|
|
* @param array $___dataForView Data to include in rendered view. If empty the current View::$viewVars will be used.
|
|
* @return string Rendered output
|
|
*/
|
|
protected function _render($___viewFn, $___dataForView = array()) {
|
|
if (empty($___dataForView)) {
|
|
$___dataForView = $this->viewVars;
|
|
}
|
|
|
|
extract($___dataForView, EXTR_SKIP);
|
|
ob_start();
|
|
|
|
include $___viewFn;
|
|
|
|
return ob_get_clean();
|
|
}
|
|
|
|
/**
|
|
* Loads a helper. Delegates to the `HelperCollection::load()` to load the helper
|
|
*
|
|
* @param string $helperName Name of the helper to load.
|
|
* @param array $settings Settings for the helper
|
|
* @return Helper a constructed helper object.
|
|
* @see HelperCollection::load()
|
|
*/
|
|
public function loadHelper($helperName, $settings = array()) {
|
|
return $this->Helpers->load($helperName, $settings);
|
|
}
|
|
|
|
/**
|
|
* 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 = $this->_paths($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 = $this->_paths($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));
|
|
}
|
|
|
|
/**
|
|
* Finds an element filename, returns false on failure.
|
|
*
|
|
* @param string $name The name of the element to find.
|
|
* @param string $plugin The plugin name the element is in.
|
|
* @return mixed Either a string to the element filename or false when one can't be found.
|
|
*/
|
|
protected function _getElementFileName($name, $plugin = null) {
|
|
$paths = $this->_paths($plugin);
|
|
foreach ($paths as $path) {
|
|
if (file_exists($path . 'elements' . DS . $name . $this->ext)) {
|
|
return $path . 'elements' . DS . $name . $this->ext;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
}
|