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 Note: Strings at XX/YY are NOT allowed, however, for the time being, a string comparison can be achieved with comparing arrays (see example below). ::

  <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="{0: foo.bar} == {0: '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>

Everything inside the <f:if> tag is being displayed if the condition evaluates to TRUE.

<f:if condition="somecondition"> <f:then>

This is being shown in case the condition matches.

This is being displayed in case the condition evaluates to FALSE.

</f:else> </f:if>

Everything inside the "then" tag is displayed if the condition evaluates to TRUE. Otherwise, everything inside the "else"-tag is displayed.

{f:if(condition: someCondition, then: 'condition is met', else: 'condition is not met')}

The value of the "then" attribute is displayed if the condition evaluates to TRUE. Otherwise, everything the value of the "else"-attribute is displayed.