Zend Framework Tutorial View component Zend_view usage, zendzend_view_php tutorial

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Zend Framework Tutorial View component Zend_view usage, Zendzend_view

This example describes the Zend Framework Tutorial View component Zend_view usage. Share to everyone for your reference, as follows:

Zend_view is the view component of the Zend framework, the view layer in MVC. Zend_view is also a page that the app directly displays to the user. Here's an introduction to Zend_view's implementation class and how to combine it with a controller.

Implementation of view

The implementation of Zend_view is mainly implemented by classes of the following directories:

root@coder-671t-m:/library/zend# Tree | grep view.php

root@coder-671t-m:/library/zend/view# Tree

6 Directories, files

Integration of Zend_view and Zend_controller

Mainly in the Zend_controller_action class,

/** * Initialize View Object * * Initializes {@link $view} if not otherwise a zend_view_interface. * If {@link $view} is not otherwise set, instantiates a new Zend_view * object, using the ' views ' subdirectory at th   E same level as the * Controller directory of the current module as the base directory. * It uses this to set the following: *-Script PATH = views/scripts/*-Helper Path = views/helpers/*-Filter PA th = views/filters/* * @return zend_view_interface * @throws zend_controller_exception If base View directory does Not exist */Public Function Initview () {if (! $this->getinvokearg (' noviewrenderer ') && $this->_helpe    R->hashelper (' Viewrenderer ')) {return $this->view;    } require_once ' zend/view/interface.php ';    if (Isset ($this->view) && ($this->view instanceof zend_view_interface) {return $this->view;    } $request = $this->getrequest (); $module = $request->getmodulename();    $dirs = $this->getfrontcontroller ()->getcontrollerdirectory (); if (Empty ($module) | |!isset ($dirs [$module]) {$module = $this->getfrontcontroller ()->getdispatcher ()->getd    Efaultmodule (); } $baseDir = DirName ($dirs [$module]). Directory_separator.    ' Views ';      if (!file_exists ($baseDir) | |!is_dir ($BASEDIR)) {require_once ' zend/controller/exception.php '; throw new Zend_controller_exception (' Missing Base View directory (". $baseDir.    '")');    } require_once ' zend/view.php ';    $this->view = new Zend_view (Array (' basepath ' = $baseDir));  return $this->view; }/** * Render a view * * renders a view.  By default, views is found in the view script path as *
/.phtml. The script suffix by * resetting {@link $viewSuffix}.   Omit the Controller directory * Prefix by specifying Boolean true for $noController. * By default, the rendered contents is appended to the response.   Specify the named body content segment to set by specifying a $name.  * * @see zend_controller_response_abstract::appendbody () * @param string|null $action Defaults to action registered in Request Object * @param string|null $name Response object named path segment to use; defaults to NULL * @param bool $noController defaults to false; i.e. use controller name as SubDir in which to search for view script * @return void */Public function render ($actio n = null, $name = NULL, $noController = False) {if (! $this->getinvokearg (' noviewrenderer ') && $this->_h Elper->hashelper (' Viewrenderer ')) {return $this->_helper->viewrenderer->render ($action, $name, $    Nocontroller); } $view = $thIs->initview ();    $script = $this->getviewscript ($action, $noController);  $this->getresponse ()->appendbody ($view->render ($script), $name); }/** * Render a given view script * * Similar to {@link Render ()}, this method renders a view script. Unlike render (), * However, it does not autodetermine the view script via {@link getviewscript ()}, * but instead Rende Rs the script passed to it.  Use this if you know the * exact view script name and path of wish to use, or if using paths that does not * conform to   The spec defined with Getviewscript (). * By default, the rendered contents is appended to the response.   Specify the named body content segment to set by specifying a $name. * * @param string $script * @param string $name * @return void */Public Function Renderscript ($script, $name = n      ull) {if (! $this->getinvokearg (' noviewrenderer ') && $this->_helper->hashelper (' Viewrenderer ')) { RetUrn $this->_helper->viewrenderer->renderscript ($script, $name);    } $view = $this->initview ();  $this->getresponse ()->appendbody ($view->render ($script), $name); }

Zend_view.php class

<?php/** * Zend Framework * * LICENSE * * This source file was subject to the new BSD LICENSE that's bundled * with Thi s package in the file LICENSE.txt. * It is also available through the world-wide-web at this URL: * HTTP://FRAMEWORK.ZEND.COM/LICENSE/NEW-BSD * If you do no T receive a copy of the license and is unable to * obtain it through the World-wide-web, please send a mail * to Licens e@zend.com so we can send you a copy immediately. * * @category Zend * @package zend_view * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend . com) * @license HTTP://FRAMEWORK.ZEND.COM/LICENSE/NEW-BSD new BSD license * @version $Id: view.php 23775 2011-03-01 1 7:25:24z Ralph $ *//** * Abstract Master Class for extension. */require_once ' zend/view/abstract.php ';/** * Concrete class for handling View scripts. * * @category Zend * @package zend_view * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend . com) * @license http://frameworK.ZEND.COM/LICENSE/NEW-BSD New BSD License */class Zend_view extends zend_view_abstract{/** * Whether or not  Streams to mimic short tags * @var bool */Private $_useviewstream = false; /** * Whether or not to use stream wrapper if Short_open_tag is false * @var BOOL */private $_usestreamwrapper = f  Alse;   /** * Constructor * * Register zend_view_stream Stream Wrapper If short tags is disabled. * * @param array $config * @return void */Public function __construct ($config = Array ()) {$this->_useviews Tream = (bool) ini_get (' Short_open_tag ')?    False:true; if ($this->_useviewstream) {if (!in_array (' Zend.view ', Stream_get_wrappers ())) {require_once ' zend/view/s        Tream.php ';      Stream_wrapper_register (' Zend.view ', ' zend_view_stream '); }} if (Array_key_exists (' Usestreamwrapper ', $config)) {$this->setusestreamwrapper ($config [' Usestreamwrappe    R ']);  } parent::__construct ($config); }/** * SetFlag indicating if stream wrapper should be used if Short_open_tag is off * * @param bool $flag * @return Zend_view    */Public Function Setusestreamwrapper ($flag) {$this->_usestreamwrapper = (bool) $flag;  return $this;   }/** * Should the stream wrapper be used if Short_open_tag is off?  * * @return BOOL */Public Function Usestreamwrapper () {return $this->_usestreamwrapper;   }/** * includes the view script in a scope with only public $this variables.   * * @param string The view script to execute. */protected function _run () {if ($this->_useviewstream && $this->usestreamwrapper ()) {include ' zend.view://'.    Func_get_arg (0);    } else {include func_get_arg (0); }  }}

By default, the controller automatically instantiates the Zend_view through the Render method, and then rener to the corresponding view file. Of course, you can instantiate the Zend_view yourself, and then use.

The action by default points to the same file as the action, and if you want to specify a view file, you can specify it by using the $this->render method. You can also set the directory for the view file through Addscriptpath and Setscriptpath.

For example

$view = new Zend_view (); $view->addscriptpath ('/www/app/myviews '); $view->addscriptpath ('/www/app/viewscomm ') ///If the call $view->render (' example.php '), Zend_view will//First look for "/www/app/myviews/example.php", Can not find "/www/app/viewscomm /example.php ", if not found, finally find" example.php "in the current directory.

Common methods of Zend_view

Public function __construct ($config = Array ())

Constructor parameters

For example

Array (' escape ' = = Array (), ' encoding ' = = = Array (),);

Common key:

Escape, encoding, BasePath, Basepathprefix, ScriptPath, Helperpath, Helperpathprefix, FilterPath, Filterpathprefix, Filter
Public Function Getengine () Return the template engine object

Public function init () initialization function

/*** Given A base path, sets the script, helper, and filter paths relative to it** assumes a directory structure of:** basePath/* scripts/* helpers/* filters/* * * @param string $path * @param string $prefix prefix to use for helper and filter paths* @return Zend_view_abstract*/publi C function Setbasepath ($path, $classPrefix = ' Zend_view ')/*** Given a base path, add script, helper, and filter paths RelA tive to it** assumes a directory structure of:** basePath/* scripts/* helpers/* filters/* * * @param string $path * @param string $prefix prefix to use for helper and filter paths* @return Zend_view_abstract*/publi C function Addbasepath ($path, $classPrefix = ' zend_view ') public function Addscriptpath ($path) Adds to the stack of View SCR IPT paths in LIFO order.public function Setscriptpath ($path) resets the stack of view script Paths.public function Getscri Ptpath ($name) Return full path to a view script specified by $namepublic function getscriptpaths () Returns An array of all C urrently Set Script Pathspublic function Addhelperpath ($path, $classPrefix = ' zend_view_helper_ ') Adds to the stack of help Er paths in LIFO order.public function Sethelperpath ($path, $classPrefix = ' zend_view_helper_ ') resets the stack of Helper Paths.public function Gethelperpath ($name) Get full path to a helper class file specified by $namepublic function Gethelpe Rpaths () Returns An array of all currently set helper Pathspublic function Gethelper ($name) Get a helper by namepublic func tion gethelpers () Get arrAy of all active Helperspublic function getallpaths () Return associative array of path types = Pathspublic function se Tescape ($SPEC)/*** assigns variables to the view script via differing strategies.** zend_view::assign (' name ', $value) Assi GNS A variable called ' name ' * with the corresponding $value. * * Zend_view::assign ($array) assigns the array keys as VARIABL e* names (with the corresponding array values). * * @see __set () * @param string|array the assignment strategy to use.* @par Am Mixed (Optional) If Assigning a named variable, use this* as the value.* @return zend_view_abstract Fluent interface* @ Throws Zend_view_exception if $spec is neither a string nor an array,* or if an attempt to set a private or protected memb ER is detected*/public function assign ($spec, $value = null)

The Controller's action can pass parameters to the view script via assign.

For example

$this->view->assign (' roles ', $roles), $this->view->assign (' num ', $num); $this->view->assign (' a ', $a);

Or it can be used

$this->view->roles= $roles, $this->view->a= $a;p ublic function render ($name) Processes a view script and Returns the Output.public function Escape ($var): Escapes A value for output in a view Script.public function setencoding ($e ncoding) Set encoding to use with htmlentities () and htmlspecialchars () public Function getencoding (): Return Current ESCAP E encoding

Common uses in view script files :

Gets the value passed over


Use some of the common helper methods:

$this->baseurl (); $this->url (); $this->paginationcontrol (); $this->partial ()

Examples of common uses of views

In the init file of the bootstrap initialization view or controller

/** * Initialize The Common view helper */protected function _initviewhelper () {  $boot = $this->bootstrap (' View '); c1/> $view = $boot->getresource (' view ');        $view->sethelperpath (' Sql/view/helper ', ' sql_view_helper ');}

In action

/** * * @return void */public function listaction () {  $this->view->assign (' data ', $data);}

View File


<?php foreach ($this->data as $item):?>    <?php Echo ($item->item1);? ><?php Endforeach;?>

More interested in Zend related content readers can view the topic: "Zend framework of the introductory tutorial", "PHP Excellent Development Framework Summary", "Yii framework Introduction and common skills Summary", "thinkphp Introductory Tutorial", "PHP object-oriented Programming introduction tutorial "," Introduction to Php+mysql Database Operation "and" PHP common database Operation Skills Summary "

I hope this article is helpful to you in PHP programming.

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