Class JsonView

$this->set(['posts' => $posts]);
$this->set('_serialize', true);

$this->set(compact('posts', 'users', 'stuff'));
$this->set('_serialize', true);

_dataToSerialize()source protected

_dataToSerialize( array|string|boolean $serialize true )

Returns data to be serialized.

Parameters

array|string|boolean $serialize optional true

The name(s) of the view variable(s) that need(s) to be serialized. If true all available view variables will be used.

Returns

mixed
The data to serialize.

_serialize()source protected

_serialize( array|string|boolean $serialize )

Serialize view vars

Special parameters

_jsonOptions You can set custom options for json_encode() this way, e.g. JSON_HEX_TAG | JSON_HEX_APOS.

Parameters

array|string|boolean $serialize

The name(s) of the view variable(s) that need(s) to be serialized. If true all available view variables.

Returns

string|false
The serialized data, or boolean false if not serializable.

render()source public

render( string|null $view null , string|null $layout null )

Render a JSON view.

Special parameters

_serialize To convert a set of view variables into a JSON response. Its value can be a string for single variable name or array for multiple names. If true all view variables will be serialized. It unset normal view template will be rendered. _jsonp Enables JSONP support and wraps response in callback function provided in query string. - Setting it to true enables the default query string parameter "callback". - Setting it to a string value, uses the provided query string parameter for finding the JSONP callback name.

Parameters

string|null $view optional null

The view being rendered.

string|null $layout optional null

The layout being rendered.

Returns

string|null
The rendered view.

Throws

Cake\Core\Exception\Exception
If there is an error in the view.

Overrides

Cake\View\SerializedView::render()

__construct()source public

__construct( Cake\Http\ServerRequest $request null , Cake\Http\Response $response null , Cake\Event\EventManager $eventManager null , array $viewOptions [] )

Constructor

Parameters

Cake\Http\ServerRequest $request optional null

Request instance.

Cake\Http\Response $response optional null

Response instance.

Cake\Event\EventManager $eventManager optional null

EventManager instance.

array $viewOptions optional []

An array of view options

Overrides

Cake\View\View::__construct()

loadHelpers()source public

loadHelpers( )

Load helpers only if serialization is disabled.

Overrides

Cake\View\View::loadHelpers()

__get()source public

__get( string $name )

Magic accessor for helpers.

Parameters

string $name

Name of the attribute to get.

Returns

mixed

__set()source public

__set( string $name , mixed $value )

Magic setter for deprecated properties.

Parameters

string $name

Name to property.

mixed $value

Value for property.

_checkFilePath()source protected

_checkFilePath( string $file , string $path )

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.

Parameters

string $file

The path to the template file.

string $path

Base path that $file should be inside of.

Returns

string
The file path

Throws

InvalidArgumentException

_elementCache()source protected

_elementCache( string $name , array $data , array $options )

Generate the cache configuration options for an element.

Parameters

string $name

Element name

array $data

Data

array $options

Element options

Returns

array
Element Cache configuration.

_evaluate()source protected

_evaluate( string $viewFile , array $dataForView )

Sandbox method to evaluate a template / view script in.

Parameters

string $viewFile

Filename of the view

array $dataForView

Data to include in rendered view.

Returns

string
Rendered output

_getElementFileName()source protected

_getElementFileName( string $name , boolean $pluginCheck true )

Finds an element filename, returns false on failure.

Parameters

string $name

The name of the element to find.

boolean $pluginCheck optional true

• if false will ignore the request's plugin if parsed plugin is not loaded

Returns

string|false
Either a string to the element filename or false when one can't be found.

_getLayoutFileName()source protected

_getLayoutFileName( string|null $name null )

Returns layout filename for this template as a string.

Parameters

string|null $name optional null

The name of the layout to find.

Returns

string
Filename for layout file (.ctp).

Throws

Cake\View\Exception\MissingLayoutException
when a layout cannot be located

_getSubPaths()source protected

_getSubPaths( string $basePath )

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.

Parameters

string $basePath

Base path on which to get the prefixed one.

Returns

array
Array with all the templates paths.

_getViewFileName()source protected

_getViewFileName( string|null $name null )

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.

Parameters

string|null $name optional null

Controller action to find template filename for

Returns

string
Template filename

Throws

Cake\View\Exception\MissingTemplateException
when a view file could not be found.

_inflectViewFileName()source protected

_inflectViewFileName( string $name )

Change the name of a view template file into underscored format.

Parameters

string $name

Name of file which should be inflected.

Returns

string
File name after conversion

_paths()source protected

_paths( string|null $plugin null , boolean $cached true )

Return all possible paths to find view files in order

Parameters

string|null $plugin optional null

Optional plugin name to scan for view files.

boolean $cached optional true

Set to false to force a refresh of view paths. Default true.

Returns

array
paths

_render()source protected

_render( string $viewFile , array $data [] )

Renders and returns output for given template filename with its array of data. Handles parent/extended templates.

Parameters

string $viewFile

Filename of the view

array $data optional []

Data to include in rendered view. If empty the current View::$viewVars will be used.

Returns

string
Rendered output

Throws

LogicException
When a block is left open.

Triggers

View.beforeRenderFile $this, [$viewFile]
View.afterRenderFile $this, [$viewFile, $content]

_renderElement()source protected

_renderElement( string $file , array $data , array $options )

Renders an element and fires the before and afterRender callbacks for it and writes to the cache if a cache is used

Parameters

string $file

Element file path

array $data

Data to render

array $options

Element options

Returns

string

Triggers

View.beforeRender $this, [$file]
View.afterRender $this, [$file, $element]

append()source public

append( string $name , mixed $value null )

Append to an existing or new block.

Appending to a new block will create the block.

Parameters

string $name

Name of the block

mixed $value optional null

The content for the block. Value will be type cast to string.

See

\Cake\View\ViewBlock::concat()

assign()source public

assign( string $name , mixed $value )

Set the content for a block. This will overwrite any existing content.

Parameters

string $name

Name of the block

mixed $value

The content for the block. Value will be type cast to string.

See

\Cake\View\ViewBlock::set()

autoLayout()source public

autoLayout( boolean|null $autoLayout null )

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.

Parameters

boolean|null $autoLayout optional null

Boolean to turn on/off. If null returns current value.

Returns

boolean|null

blocks()source public

blocks( )

Get the names of all the existing blocks.

Returns

array
An array containing the blocks.

See

\Cake\View\ViewBlock::keys()

cache()source public

cache( callable $block , array $options [] )

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.

Parameters

callable $block

The block of code that you want to cache the output of.

array $options optional []

The options defining the cache key etc.

Returns

string
The rendered content.

Throws

RuntimeException
When $options is lacking a 'key' option.

element()source public

element( string $name , array $data [] , array $options [] )

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.

Parameters

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.

array $data optional []

Array of data to be made available to the rendered view (i.e. the Element)

array $options optional []

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

Returns

string
Rendered Element

Throws

Cake\View\Exception\MissingElementException

When an element is missing and ignoreMissing is false.

elementExists()source public

elementExists( string $name )

Checks if an element exists

Parameters

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.

Returns

boolean
Success

enableAutoLayout()source public

enableAutoLayout( boolean $enable true )

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.

Parameters

boolean $enable optional true

Boolean to turn on/off.

end()source public

end( )

End a capturing block. The compliment to View::start()

See

\Cake\View\ViewBlock::end()

exists()source public

exists( string $name )

Check if a block exists

Parameters

string $name

Name of the block

Returns

boolean

extend()source public

extend( string $name )

Provides template or element extension/inheritance. Views can extends a parent view and populate blocks in the parent template.

Parameters

string $name

The template or element to 'extend' the current one with.

Throws

LogicException
when you extend a template with itself or make extend loops.
LogicException
when you extend an element which doesn't exist

fetch()source public

fetch( string $name , string $default '' )

Fetch the content for a block. If a block is empty or undefined '' will be returned.

Parameters

string $name

Name of the block

string $default optional ''

Default text

Returns

string
The block content or $default if the block does not exist.

See

\Cake\View\ViewBlock::get()

get()source public

get( string $var , mixed $default null )

Returns the contents of the given View variable.

Parameters

string $var

The view var you want the contents of.

mixed $default optional null

The default/fallback content of $var.

Returns

mixed
The content of the named var if its set, otherwise $default.

getCurrentType()source public

getCurrentType( )

Retrieve the current view type

Returns

string

getLayout()source public

getLayout( )

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.

Returns

string

getLayoutPath()source public

getLayoutPath( )

Get path for layout files.

Returns

string

getTemplate()source public

getTemplate( )

Get the name of the template file to render. The name specified is the filename in /src/Template/ without the .ctp extension.

Returns

string

getTemplatePath()source public

getTemplatePath( )

Get path for templates files.

Returns

string

getTheme()source public

getTheme( )

Get the current view theme.

Returns

string

getVars()source public

getVars( )

Returns a list of variables available in the current View context

Returns

array
Array of the set view variable names.

helpers()source public

helpers( )

Get the helper registry in use by this View class.

Returns

Cake\View\HelperRegistry

initialize()source public

initialize( )

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.

isAutoLayoutEnabled()source public

isAutoLayoutEnabled( )

Returns if CakePHP's conventional mode of applying layout files is enabled. Disabled means that layouts will not be automatically applied to rendered views.

Returns

boolean

layout()source public

layout( string|null $name null )

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.

Parameters

string|null $name optional null

Layout file name to set. If null returns current name.

Returns

string|null

layoutPath()source public

layoutPath( string|null $path null )

Get/set path for layout files.

Deprecated

3.5.0 Use getLayoutPath()/setLayoutPath() instead.

Parameters

string|null $path optional null

Path for layout files. If null returns current path.

Returns

string|null

loadHelper()source public

loadHelper( string $name , array $config [] )

Loads a helper. Delegates to the HelperRegistry::load() to load the helper

Parameters

string $name

Name of the helper to load.

array $config optional []

Settings for the helper

Returns

Cake\View\Helper
a constructed helper object.

See

\Cake\View\HelperRegistry::load()

pluginSplit()source public

pluginSplit( string $name , boolean $fallback true )

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

Parameters

string $name

The name you want to plugin split.

boolean $fallback optional true

If true uses the plugin set in the current Request when parsed plugin is not loaded

Returns

array
Array with 2 indexes. 0 => plugin name, 1 => filename

prepend()source public

prepend( string $name , mixed $value )

Prepend to an existing or new block.

Prepending to a new block will create the block.

Parameters

string $name

Name of the block

mixed $value

The content for the block. Value will be type cast to string.

See

\Cake\View\ViewBlock::concat()

renderLayout()source public

renderLayout( string $content , string|null $layout null )

Renders a layout. Returns output from _render(). Returns false on error. Several variables are created for use in layout.

Parameters

string $content

Content to render in a template, wrapped by the surrounding layout.

string|null $layout optional null

Layout name

Returns

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]
View.afterLayout $this, [$layoutFileName]

reset()source public

reset( string $name )

Reset the content for a block. This will overwrite any existing content.

Parameters

string $name

Name of the block

See

\Cake\View\ViewBlock::set()

setLayout()source public

setLayout( string $name )

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.

Parameters

string $name

Layout file name to set.

setLayoutPath()source public

setLayoutPath( string $path )

Set path for layout files.

Parameters

string $path

Path for layout files.

setTemplate()source public

setTemplate( string $name )

Set the name of the template file to render. The name specified is the filename in /src/Template/ without the .ctp extension.

Parameters

string $name

Template file name to set.

setTemplatePath()source public

setTemplatePath( string $path )

Set path for templates files.

Parameters

string $path

Path for template files.

setTheme()source public

setTheme( string $theme )

Set the view theme to use.

Parameters

string $theme

Theme name.

start()source public

start( string $name )

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();

Parameters

string $name

The name of the block to capture for.

See

\Cake\View\ViewBlock::start()

template()source public

template( string|null $name null )

Get/set the name of the template file to render. The name specified is the filename in /src/Template/ without the .ctp extension.

Deprecated

3.5.0 Use getTemplate()/setTemplate() instead.

Parameters

string|null $name optional null

Template file name to set. If null returns current name.

Returns

string|null

templatePath()source public

templatePath( string|null $path null )

Get/set path for templates files.

Deprecated

3.5.0 Use getTemplatePath()/setTemplatePath() instead.

Parameters

string|null $path optional null

Path for template files. If null returns current path.

Returns

string|null

theme()source public

theme( string|null $theme null )

The view theme to use.

Deprecated

3.5.0 Use getTheme()/setTheme() instead.

Parameters

string|null $theme optional null

Theme name. If null returns current theme.

Returns

string|null

uuid()source public

uuid( string $object , string $url )

Generates a unique, non-random DOM ID for an object, based on the object type and the target URL.

Parameters

string $object

Type of object, i.e. 'form' or 'link'

string $url

The object's target URL

Returns

string

_createCell()source protected

_createCell( string $className , string $action , string $plugin , array $options )

Create and configure the cell instance.

Parameters

string $className

The cell classname.

string $action

The action name.

string $plugin

The plugin name.

array $options

The constructor options for the cell.

Returns

Cake\View\Cell

cell()source protected

cell( string $cell , array $data [] , array $options [] )

Renders the given cell.

Example:

// Taxonomy\View\Cell\TagCloudCell::smallList()
$cell = $this->cell('Taxonomy.TagCloud::smallList', ['limit' => 10]);

// App\View\Cell\TagCloudCell::smallList()
$cell = $this->cell('TagCloud::smallList', ['limit' => 10]);

The display action will be used by default when no action is provided:

// Taxonomy\View\Cell\TagCloudCell::display()
$cell = $this->cell('Taxonomy.TagCloud');

Cells are not rendered until they are echoed.

Parameters

string $cell

You must indicate cell name, and optionally a cell action. e.g.: TagCloud::smallList will invoke View\Cell\TagCloudCell::smallList(), display action will be invoked by default when none is provided.

array $data optional []

Additional arguments for cell method. e.g.: cell('TagCloud::smallList', ['a1' => 'v1', 'a2' => 'v2']) maps to View\Cell\TagCloud::smallList(v1, v2)

array $options optional []

Options for Cell's constructor

Returns

Cake\View\Cell
The cell instance

Throws

Cake\View\Exception\MissingCellException
If Cell class was not found.
BadMethodCallException
If Cell class does not specified cell action.

dispatchEvent()source public

dispatchEvent( string $name , array|null $data null , object|null $subject null )

Wrapper for creating and dispatching events.

Returns a dispatched event.

Parameters

string $name

Name of the event.

array|null $data optional null

Any value you wish to be transported with this event to it can be read by listeners.

object|null $subject optional null

The object that this event applies to ($this by default).

Returns

Cake\Event\Event

eventManager()source public

eventManager( Cake\Event\EventManager $eventManager null )

Returns the Cake\Event\EventManager manager instance for this object.

You can use this instance to register any new listeners or callbacks to the object events, or create your own events and trigger them at will.

Deprecated

3.5.0 Use getEventManager()/setEventManager() instead.

Parameters

Cake\Event\EventManager $eventManager optional null

the eventManager to set

Returns

Cake\Event\EventManager

getEventManager()source public

getEventManager( )

Returns the Cake\Event\EventManager manager instance for this object.

You can use this instance to register any new listeners or callbacks to the object events, or create your own events and trigger them at will.

Returns

Cake\Event\EventManager

setEventManager()source public

setEventManager( Cake\Event\EventManager $eventManager )

Returns the Cake\Event\EventManager manager instance for this object.

You can use this instance to register any new listeners or callbacks to the object events, or create your own events and trigger them at will.

Parameters

Cake\Event\EventManager $eventManager

the eventManager to set

Returns

$this

log()source public

log( mixed $msg , integer|string $level LogLevel::ERROR , string|array $context [] )

Convenience method to write a message to Log. See Log::write() for more information on writing to logs.

Parameters

mixed $msg

Log message.

integer|string $level optional LogLevel::ERROR

Error level.

string|array $context optional []

Additional log data relevant to this message.

Returns

boolean
Success of log write.

requestAction()source public

requestAction( string|array $url , array $extra [] )

Calls a controller's method from any location. Can be used to connect controllers together or tie plugins into a main application. requestAction can be used to return rendered views or fetch the return value from controller actions.

Under the hood this method uses Router::reverse() to convert the $url parameter into a string URL. You should use URL formats that are compatible with Router::reverse()

Examples

A basic example getting the return value of the controller action:

$variables = $this->requestAction('/articles/popular');

A basic example of request action to fetch a rendered page without the layout.

$viewHtml = $this->requestAction('/articles/popular', ['return']);

You can also pass the URL as an array:

$vars = $this->requestAction(['controller' => 'articles', 'action' => 'popular']);

Passing other request data

You can pass POST, GET, COOKIE and other data into the request using the appropriate keys. Cookies can be passed using the cookies key. Get parameters can be set with query and post data can be sent using the post key.

$vars = $this->requestAction('/articles/popular', [
  'query' => ['page' => 1],
  'cookies' => ['remember_me' => 1],
]);

Sending environment or header values

By default actions dispatched with this method will use the global $_SERVER and $_ENV values. If you want to override those values for a request action, you can specify the values:

$vars = $this->requestAction('/articles/popular', [
  'environment' => ['CONTENT_TYPE' => 'application/json']
]);

Transmitting the session

By default actions dispatched with this method will use the standard session object. If you want a particular session instance to be used, you need to specify it.

$vars = $this->requestAction('/articles/popular', [
  'session' => new Session($someSessionConfig)
]);

Deprecated

3.3.0 You should refactor your code to use View Cells instead of this method.

Parameters

string|array $url

String or array-based url. Unlike other url arrays in CakePHP, this url will not automatically handle passed arguments in the $url parameter.

array $extra optional []

if array includes the key "return" it sets the autoRender to true. Can also be used to submit GET/POST data, and passed arguments.

Returns

mixed

Boolean true or false on success/failure, or contents of rendered action if 'return' is set in $extra.

createView()source public

createView( string|null $viewClass null )

Constructs the view class instance based on the current configuration.

Parameters

string|null $viewClass optional null

Optional namespaced class name of the View class to instantiate.

Returns

Cake\View\View

Throws

Cake\View\Exception\MissingViewException
If view class was not found.

set()source public

set( string|array $name , mixed $value null )

Saves a variable or an associative array of variables for use inside a template.

Parameters

string|array $name

A string or an array of data.

mixed $value optional null

Value in case $name is a string (which then works as the key). Unused if $name is an associative array, otherwise serves as the values to $name's keys.

Returns

$this

viewBuilder()source public

viewBuilder( )

Get the view builder being used.

Returns

Cake\View\ViewBuilder

viewOptions()source public

viewOptions( string|array|null $options null , boolean $merge true )

Get/Set valid view options in the object's _validViewOptions property. The property is created as an empty array if it is not set. If called without any parameters it will return the current list of valid view options. See createView().

Parameters

string|array|null $options optional null

string or array of string to be appended to _validViewOptions.

boolean $merge optional true

Whether to merge with or override existing valid View options. Defaults to true.

Returns

array
The updated view options as an array.

'json'

['_serialize', '_jsonOptions', '_jsonp']

'json'

'json'