View/Abstract.php

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Zend Framework

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Category: Zend
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License
Package: Zend_View
Version: $Id$

\Zend_View_Abstract
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Package: Zend_View

Abstract class for Zend_View to help enforce private constructs.

Implements
Children: \Zend_View
Category: Zend
Copyright: Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
License: New BSD License

Properties

string $_encoding = 'UTF-8'

Encoding to use in escaping mechanisms; defaults to utf-8

Default value'UTF-8'Details

Type: string

string $_escape = 'htmlspecialchars'

Callback for escaping.

Default value'htmlspecialchars'Details

Type: string

string $_file = null

Script file name to execute

Default valuenullDetails

Type: string

array $_filter = array()

Stack of Zend_View_Filter names to apply as filters.

Default valuearray()Details

Type: array

array $_filterClass = array()

Stack of Zend_View_Filter objects that have been loaded

Default valuearray()Details

Type: array

array $_filterLoaded = array()

Map of filter => class pairs to help in determining filter class from name

Default valuearray()Details

Type: array

array $_filterLoadedDir = array()

Map of filter => classfile pairs to aid in determining filter classfile

Default valuearray()Details

Type: array

array $_helper = array()

Instances of helper objects.

Default valuearray()Details

Type: array

array $_helperLoaded = array()

Map of helper => class pairs to help in determining helper class from name

Default valuearray()Details

Type: array

array $_helperLoadedDir = array()

Map of helper => classfile pairs to aid in determining helper classfile

Default valuearray()Details

Type: array

bool $_lfiProtectionOn = true

Flag indicating whether or not LFI protection for rendering view scripts is enabled

Default valuetrueDetails

Type: bool

array $_loaderTypes = array('filter', 'helper')

Plugin types

Default valuearray('filter', 'helper')Details

Type: array

array $_loaders = array()

Plugin loaders

Default valuearray()Details

Type: array

array $_path = array('script' => array(), 'helper' => array(), 'filter' => array())

Path stack for script, helper, and filter directories.

Default valuearray('script' => array(), 'helper' => array(), 'filter' => array())Details

Type: array

boolean $_strictVars = false

Strict variables flag; when on, undefined variables accessed in the view scripts will trigger notices

Default valuefalseDetails

Type: boolean

Methods

__call(string $name, array $args) : string

Accesses a helper object from within a script.

If the helper class has a 'view' property, sets it with the current view object.

Parameters

Name	Type	Description
$name	string	The helper name.
$args	array	The parameters for the helper.

Returns

Type	Description
string	The result of the helper output.

__construct(array $config = array()) : void

Constructor.

Parameters

Name	Type	Description
$config	array	Configuration key-value pairs.

__get(string $key) : null

Prevent E_NOTICE for nonexistent values

If {@link strictVars()} is on, raises a notice.

Parameters

Name	Type	Description
$key	string

Returns

Type	Description
null

__isset(string $key) : boolean

Allows testing with empty() and isset() to work inside templates.

Parameters

Name	Type	Description
$key	string

Returns

Type	Description
boolean

__set(string $key, mixed $val) : void

Directly assigns a variable to the view script.

Checks first to ensure that the caller is not attempting to set a protected or private member (by checking for a prefixed underscore); if not, the public member is set; otherwise, an exception is raised.

Parameters

Name	Type	Description
$key	string	The variable name.
$val	mixed	The variable value.

Throws

Exception	Description
\Zend_View_Exception	if an attempt to set a private or protected member is detected

__unset(string $key) : void

Allows unset() on object properties to work

Parameters

Name	Type	Description
$key	string

_addPath(string $type, string | array $path, string $prefix = null) : void

Adds paths to the path stack in LIFO order.

Zend_View::_addPath($type, 'dirname') adds one directory to the path stack. Zend_View::_addPath($type, $array) adds one directory for each array element value. In the case of filter and helper paths, $prefix should be used to specify what class prefix to use with the given path.

Parameters

Name	Type	Description
$type	string	The path type ('script', 'helper', or 'filter').
$path	string \| array	The path specification.
$prefix	string	Class prefix to use with path (helpers and filters only)

_addPluginPath(string $type, string $classPrefix, array $paths) : \Zend_View_Abstract

Add a prefixPath for a plugin type

Parameters

Name	Type	Description
$type	string
$classPrefix	string
$paths	array

Returns

Type	Description
\Zend_View_Abstract

_filter(string $buffer) : string

Applies the filter callback to a buffer.

Parameters

Name	Type	Description
$buffer	string	The buffer contents.

Returns

Type	Description
string	The filtered buffer.

_getPaths(string $type) : array

Return all paths for a given path type

Parameters

Name	Type	Description
$type	string	The path type ('helper', 'filter', 'script')

Returns

Type	Description
array

_getPlugin(string $type, string $name) : object

Retrieve a plugin object

Parameters

Name	Type	Description
$type	string
$name	string

Returns

Type	Description
object

_getPluginPath(string $type, string $name) : string | false

Get a path to a given plugin class of a given type

Parameters

Name	Type	Description
$type	string
$name	string

Returns

Type	Description
string \| false

_run() : mixed

abstract

Use to include the view script in a scope that only allows public members.

Returns

Type	Description
mixed

_script(string $name) : void

Finds a view script from the available directories.

Parameters

Name	Type	Description
$name	string	The base name of the script.

_setFilterClass(string $name, string $class, string $file) : void

Parameters

Name	Type	Description
$name	string
$class	string
$file	string	path to class file

_setHelperClass(string $name, string $class, string $file) : void

Parameters

Name	Type	Description
$name	string
$class	string
$file	string	path to class file

_setPath(string $type, string | array $path, string $classPrefix = null) : void

Resets the path stack for helpers and filters.

Parameters

Name	Type	Description
$type	string	The path type ('helper' or 'filter').
$path	string \| array	The directory (-ies) to set as the path.
$classPrefix	string	Class prefix to apply to elements of $path

addBasePath(string $path, $classPrefix = 'Zend_View') : \Zend_View_Abstract

Given a base path, add script, helper, and filter paths relative to it

Assumes a directory structure of:


basePath/
    scripts/
    helpers/
    filters/

Parameters

Name	Type	Description
$path	string
$classPrefix

Returns

Type	Description
\Zend_View_Abstract

addFilter( $name) : \Zend_View_Abstract

Add one or more filters to the stack in FIFO order.

Parameters

Name	Type	Description
$name

Returns

Type	Description
\Zend_View_Abstract

addFilterPath( $path, string $classPrefix = 'Zend_View_Filter_') : \Zend_View_Abstract

Adds to the stack of filter paths in LIFO order.

Parameters

Name	Type	Description
$path
$classPrefix	string	Class prefix to use with classes in this directory; defaults to Zend_View_Filter

Returns

Type	Description
\Zend_View_Abstract

addHelperPath( $path, string $classPrefix = 'Zend_View_Helper_') : \Zend_View_Abstract

Adds to the stack of helper paths in LIFO order.

Parameters

Name	Type	Description
$path
$classPrefix	string	Class prefix to use with classes in this directory; defaults to Zend_View_Helper

Returns

Type	Description
\Zend_View_Abstract

addScriptPath( $path) : \Zend_View_Abstract

Adds to the stack of view script paths in LIFO order.

Parameters

Name	Type	Description
$path

Returns

Type	Description
\Zend_View_Abstract

assign( $spec, $value = null) : \Zend_View_Abstract

Assigns variables to the view script via differing strategies.

Zend_View::assign('name', $value) assigns a variable called 'name' with the corresponding $value. Zend_View::assign($array) assigns the array keys as variable names (with the corresponding array values).

Parameters

Name	Type	Description
$spec
$value

Returns

Type	Description
\Zend_View_Abstract	Fluent interface

Throws

Exception	Description
\Zend_View_Exception	if $spec is neither a string nor an array, or if an attempt to set a private or protected member is detected

Details

See

clearVars() : void

Clear all assigned variables

Clears all variables assigned to Zend_View either via {@link assign()} or property overloading ({@link __set()}).

escape(mixed $var) : mixed

Escapes a value for output in a view script.

If escaping mechanism is one of htmlspecialchars or htmlentities, uses {@link $_encoding} setting.

Parameters

Name	Type	Description
$var	mixed	The output to escape.

Returns

Type	Description
mixed	The escaped value.

getAllPaths() : array

Return associative array of path types => paths

Returns

Type	Description
array

getEncoding() : string

Return current escape encoding

Returns

Type	Description
string

getEngine() : \Zend_View_Abstract

Return the template engine object

Returns the object instance, as it is its own template engine

Returns

Type	Description
\Zend_View_Abstract

getFilter(string $name) : object

Get a filter object by name

Parameters

Name	Type	Description
$name	string

Returns

Type	Description
object

getFilterPath(string $name) : string | false

Get full path to a filter class file specified by $name

Parameters

Name	Type	Description
$name	string

Returns

Type	Description
string \| false	False on failure, path on success

getFilterPaths() : array

Returns an array of all currently set filter paths

Returns

Type	Description
array

getFilters() : array

Return array of all currently active filters

Only returns those that have already been instantiated.

Returns

Type	Description
array

getHelper(string $name) : object

Get a helper by name

Parameters

Name	Type	Description
$name	string

Returns

Type	Description
object

getHelperPath(string $name) : string | false

Get full path to a helper class file specified by $name

Parameters

Name	Type	Description
$name	string

Returns

Type	Description
string \| false	False on failure, path on success

getHelperPaths() : array

Returns an array of all currently set helper paths

Returns

Type	Description
array

getHelpers() : array

Get array of all active helpers

Only returns those that have already been instantiated.

Returns

Type	Description
array

getPluginLoader(string $type) : \Zend_Loader_PluginLoader

Retrieve plugin loader for a specific plugin type

Parameters

Name	Type	Description
$type	string

Returns

Type	Description
\Zend_Loader_PluginLoader

getScriptPath(string $name) : false | string

Return full path to a view script specified by $name

Parameters

Name	Type	Description
$name	string

Returns

Type	Description
false \| string	False if script not found

Throws

Exception	Description
\Zend_View_Exception	if no script directory set

getScriptPaths() : array

Returns an array of all currently set script paths

Returns

Type	Description
array

getVars() : array

Return list of all assigned variables

Returns all public properties of the object. Reflection is not used here as testing reflection properties for visibility is buggy.

Returns

Type	Description
array

init() : void

Allow custom object initialization when extending Zend_View_Abstract or Zend_View

Triggered by {@link __construct() the constructor} as its final action.

isLfiProtectionOn() : bool

Return status of LFI protection flag

Returns

Type	Description
bool

registerHelper(\Zend_View_Helper_Abstract | object $helper, string $name) : \Zend_View_Abstract

Registers a helper object, bypassing plugin loader

Parameters

Name	Type	Description
$helper	\Zend_View_Helper_Abstract \| object
$name	string

Returns

Type	Description
\Zend_View_Abstract

Throws

Exception	Description
\Zend_View_Exception

render(string $name) : string

Processes a view script and returns the output.

Parameters

Name	Type	Description
$name	string	The script name to process.

Returns

Type	Description
string	The script output.

setBasePath(string $path, $classPrefix = 'Zend_View') : \Zend_View_Abstract

Given a base path, sets the script, helper, and filter paths relative to it

Assumes a directory structure of:


basePath/
    scripts/
    helpers/
    filters/

Parameters

Name	Type	Description
$path	string
$classPrefix

Returns

Type	Description
\Zend_View_Abstract

setEncoding(string $encoding) : \Zend_View_Abstract

Set encoding to use with htmlentities() and htmlspecialchars()

Parameters

Name	Type	Description
$encoding	string

Returns

Type	Description
\Zend_View_Abstract

setEscape(mixed $spec) : \Zend_View_Abstract

Sets the _escape() callback.

Parameters

Name	Type	Description
$spec	mixed	The callback for _escape() to use.

Returns

Type	Description
\Zend_View_Abstract

setFilter( $name) : \Zend_View_Abstract

Resets the filter stack.

To clear all filters, use Zend_View::setFilter(null).

Parameters

Name	Type	Description
$name

Returns

Type	Description
\Zend_View_Abstract

setFilterPath( $path, string $classPrefix = 'Zend_View_Filter_') : \Zend_View_Abstract

Resets the stack of filter paths.

To clear all paths, use Zend_View::setFilterPath(null).

Parameters

Name	Type	Description
$path
$classPrefix	string	The class prefix to apply to all elements in $path; defaults to Zend_View_Filter

Returns

Type	Description
\Zend_View_Abstract

setHelperPath(string | array $path, string $classPrefix = 'Zend_View_Helper_') : \Zend_View_Abstract

Resets the stack of helper paths.

To clear all paths, use Zend_View::setHelperPath(null).

Parameters

Name	Type	Description
$path	string \| array	The directory (-ies) to set as the path.
$classPrefix	string	The class prefix to apply to all elements in $path; defaults to Zend_View_Helper

Returns

Type	Description
\Zend_View_Abstract

setLfiProtection(bool $flag) : \Zend_View_Abstract

Set LFI protection flag

Parameters

Name	Type	Description
$flag	bool

Returns

Type	Description
\Zend_View_Abstract

setPluginLoader(\Zend_Loader_PluginLoader $loader, string $type) : \Zend_View_Abstract

Set plugin loader for a particular plugin type

Parameters

Name	Type	Description
$loader	\Zend_Loader_PluginLoader
$type	string

Returns

Type	Description
\Zend_View_Abstract

setScriptPath( $path) : \Zend_View_Abstract

Resets the stack of view script paths.

To clear all paths, use Zend_View::setScriptPath(null).

Parameters

Name	Type	Description
$path

Returns

Type	Description
\Zend_View_Abstract

strictVars(boolean $flag = true) : \Zend_View_Abstract

Enable or disable strict vars

If strict variables are enabled, {@link __get()} will raise a notice when a variable is not defined. Use in conjunction with {@link Zend_View_Helper_DeclareVars the declareVars() helper} to enforce strict variable handling in your view scripts.

Parameters

Name	Type	Description
$flag	boolean

Returns

Type	Description
\Zend_View_Abstract

View/Abstract.php

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Properties

Methods

\Zend_View_Abstract
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