TYPO3\CMS\Fluid\ViewHelpers\IfViewHelper Class Reference

Inheritance diagram for TYPO3\CMS\Fluid\ViewHelpers\IfViewHelper:

Public Member Functions
	initializeArguments ()
Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper
	setChildNodes (array $childNodes)
	__construct ()
	render ()
	compile ($argumentsVariableName, $renderChildrenClosureVariableName, &$initializationPhpCode, \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\AbstractNode $syntaxTreeNode, \TYPO3\CMS\Fluid\Core\Compiler\TemplateCompiler $templateCompiler)
Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
	setArguments (array $arguments)
	setRenderingContext (\TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface $renderingContext)
	injectObjectManager (\TYPO3\CMS\Extbase\Object\ObjectManagerInterface $objectManager)
	injectReflectionService (\TYPO3\CMS\Extbase\Reflection\ReflectionService $reflectionService)
	isEscapingInterceptorEnabled ()
	setViewHelperNode (\TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\ViewHelperNode $node)
	setRenderChildrenClosure (\Closure $renderChildrenClosure)
	initializeArgumentsAndRender ()
	initialize ()
	renderChildren ()
	prepareArguments ()
	validateArguments ()
	initializeArguments ()
	compile ($argumentsVariableName, $renderChildrenClosureVariableName, &$initializationPhpCode, \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\AbstractNode $syntaxTreeNode, \TYPO3\CMS\Fluid\Core\Compiler\TemplateCompiler $templateCompiler)
	resetState ()
Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface
	compile ($argumentsVariableName, $renderChildrenClosureVariableName, &$initializationPhpCode, \TYPO3\CMS\Fluid\Core\Parser\SyntaxTree\AbstractNode $syntaxTreeNode, \TYPO3\CMS\Fluid\Core\Compiler\TemplateCompiler $templateCompiler)

Additional Inherited Members
Static Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper
static	renderStatic (array $arguments, \Closure $renderChildrenClosure, \TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface $renderingContext)
Static Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
static	renderStatic (array $arguments, \Closure $renderChildrenClosure, \TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface $renderingContext)
Static Public Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\Facets\CompilableInterface
static	renderStatic (array $arguments, \Closure $renderChildrenClosure, \TYPO3\CMS\Fluid\Core\Rendering\RenderingContextInterface $renderingContext)
Protected Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper
	renderThenChild ()
	renderElseChild ()
Protected Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
	registerArgument ($name, $type, $description, $required=false, $defaultValue=null)
	overrideArgument ($name, $type, $description, $required=false, $defaultValue=null)
	callRenderMethod ()
	getLogger ()
	buildRenderChildrenClosure ()
	hasArgument ($argumentName)
Static Protected Member Functions inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractConditionViewHelper
static	renderStaticThenChild ($arguments, &$hasEvaluated)
static	renderStaticElseChild ($arguments, &$hasEvaluated)
static	evaluateCondition ($arguments=null)
Protected Attributes inherited from TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper
	$arguments
	$templateVariableContainer
	$controllerContext
	$renderingContext
	$renderChildrenClosure = null
	$viewHelperVariableContainer
	$objectManager
	$escapingInterceptorEnabled = true

Detailed Description

This view helper implements an if/else condition.

Conditions:

As a condition is a boolean value, you can just use a boolean argument. Alternatively, you can write a boolean expression there. Boolean expressions have the following form: XX Comparator YY Comparator is one of: ==, !=, <, <=, >, >= and % The % operator converts the result of the % operation to boolean.

XX and YY can be one of:

• number
• Object Accessor
• Array
• a ViewHelper

• a String

  <f:if condition="{rank} > 100"> Will be shown if rank is > 100 </f:if> <f:if condition="{rank} % 2"> Will be shown if rank % 2 != 0. </f:if> <f:if condition="{rank} == {k:bar()}"> Checks if rank is equal to the result of the ViewHelper "k:bar" </f:if> <f:if condition="{foo.bar} == 'stringToCompare'"> Will result true if {foo.bar}'s represented value equals 'stringToCompare'. </f:if>

= Examples =

<f:if condition="somecondition"> This is being shown in case the condition matches </f:if> <output> Everything inside the <f:if> tag is being displayed if the condition evaluates to TRUE. </output>

<f:if condition="somecondition"> <f:then> This is being shown in case the condition matches. </f:then> <f:else> This is being displayed in case the condition evaluates to FALSE. </f:else> </f:if> <output> Everything inside the "then" tag is displayed if the condition evaluates to TRUE. Otherwise, everything inside the "else"-tag is displayed. </output>

{f:if(condition: someCondition, then: 'condition is met', else: 'condition is not met')} <output> The value of the "then" attribute is displayed if the condition evaluates to TRUE. Otherwise, everything the value of the "else"-attribute is displayed. </output>

Definition at line 82 of file IfViewHelper.php.

Member Function Documentation

initializeArguments()

TYPO3\CMS\Fluid\ViewHelpers\IfViewHelper::initializeArguments

(

)

Returns

void

Definition at line 87 of file IfViewHelper.php.

References TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper\registerArgument().