[TYPO3-mvc] multiple conditions in if viewhelper

[Franz Koch]

Hey,

> i want to make a condition with multiple things i want to check for like
> this:
>
> <f:if condition="{first} == 0 || {second} == 0 || {third} == 0">
>
> but now i get an exception:
> #1244201848: The expression "0 == 0 || 0 == 0 || 0 == 0" has more than
> tree parts.
>
> why do i get an exception like that? is there any workaround?

The Fluid parser can currently only evaluate one boolean expression. 
Someone (sorry, don't remember the name) mentioned that you could use 
arrays to evaluate multiple expressions as a workaround, but that 
probably won't work in the same way as your condition:

<f:if condition="{0:first, 1:second, 2:third} == {0:0, 1:0, 2:0}">
	<f:then>all of them 0</f:then>
	<f:else>at least one of them not 0</f:else>
</f:if>

Another workaround is to add a boolean getter to your models internally 
evaluating the condition - but that only works if all parts of the 
condition are from the same model.

<f:if condition="{myObject.isValid}">...</f:if>

public function getIsValid() {
	return !($this->getFirst() == 0 || $this->getSecond() == 0 || 
$this->getThird() == 0);
}

-- 
kind regards,
Franz Koch