ViewRenderer

Class ViewRenderer.

Properties

view

public View $view

data

The data to pass to the view.

private array $data

functionHandlers

The function handlers that are registered with the view renderer and

private array $functionHandlers

can be called from the view template.

functions

The custom functions that are registered with the view renderer and

private array $functions

can be called from the view template.

Methods

__set

Magic method to set the value of a data property.

public __set(string $key, mixed $value): void

Parameters

Parameter	Type	Description
$key	string
$value	mixed

__isset

Magic method to check if a property is set.

public __isset(string $name): bool

Parameters

Parameter	Type	Description
$name	string

__unset

Magic method to unset a property.

public __unset(string $name): void

Parameters

Parameter	Type	Description
$name	string

exec

Executes the view renderer.

public exec(HTML $response): void

Parameters

Parameter	Type	Description
$response	HTML

addHelper

Adds a helper to the view renderer.

public addHelper(string $helper, array $args, ?string $alias): bool

Parameters

Parameter	Type	Description
$helper	string	the name of the helper to add
$args	array	an optional array of arguments to pass to the helper
$alias	string	an optional alias for the helper

getHelpers

Retrieves the helpers associated with the current view.

public getHelpers(): void

removeHelper

Removes a helper from the view renderer.

public removeHelper(string $name): void

Parameters

Parameter	Type	Description
$name	string	the name of the helper to remove

__get

Magic method to get the value of a property.

public __get(string $key): mixed

Parameters

Parameter	Type	Description
$key	string	the name of the property to get

populate

Populates the view renderer with data.

public populate(array $array): void

Parameters

Parameter	Type	Description
$array	array	the array of data to populate the view renderer with

extend

Extends the data available on any defined views.

public extend(array $array): void

Parameters

Parameter	Type	Description
$array	array	the array of data to extend the view renderer with

hasView

Checks if a view exists.

public hasView(string $view): bool

Parameters

Parameter	Type	Description
$view	string	the name of the view to check

layout

Sets the layout for the view.

public layout(string $view): void

If the current view is an instance of Layout, it loads the specified layout. Otherwise, if the specified layout is not an instance of Layout, it creates a new Layout instance. Finally, it sets the view to the specified layout.

Parameters

Parameter	Type	Description
$view	string	the layout or view to set

setNoLayout

Sets the view renderer to disable layout rendering.

public setNoLayout(): void

This method sets the view property to null, which indicates that the layout rendering should be disabled. When the layout rendering is disabled, only the view template will be rendered without any surrounding layout.

view

Renders a view.

public view(View $view, array $data): void

Parameters

Parameter	Type	Description
$view	View	The view to render. It can be either a string representing the view file path or an instance of the View class.
$data	array	The data to pass to the view

offsetExists

public offsetExists(mixed $offset): bool

Parameters

Parameter	Type	Description
$offset	mixed

offsetGet

public offsetGet(mixed $offset): mixed

Parameters

Parameter	Type	Description
$offset	mixed

offsetSet

public offsetSet(mixed $offset, mixed $value): void

Parameters

Parameter	Type	Description
$offset	mixed
$value	mixed

offsetUnset

public offsetUnset(mixed $offset): void

Parameters

Parameter	Type	Description
$offset	mixed

registerFunctionHandler

Register a function handler.

public registerFunctionHandler(mixed $handler): void

Function handlers are used to handle custom functions in the view template. Unlike custom functions, function handlers are objects that provide public methods that can be called from the view template.

Smarty:

{$functionName param1="value" param2="value"}

PHP:

<?php $this->functionName('param1') ?>

The function will be called with the parameters as an array. The function must return a string which will be inserted into the view at the point the function was called.

Parameters

Parameter	Type	Description
$handler	mixed	The function handler object to register

registerFunction

Register a custom function with the view.

public registerFunction(string $name, callable $function): void

Custom functions are functions that can be called from within the view. The function can be called using the syntax:

Smarty:

{$functionName param1="value" param2="value"}

PHP:

<?php $this->functionName('param1') ?>

The function will be called with the parameters as an array. The function must return a string which will be inserted into the view at the point the function was called.

Parameters

Parameter	Type	Description
$name	string	The name of the function to register
$function	callable	The function to call when the function is called in the view

render

Renders a view and returns the rendered output as a string.

private render(View $view): string

Parameters

Parameter	Type	Description
$view	View	the view object to render

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