I have this in my template:
<v:iterator.explode content="<f:format.nl2br>{artnumbers.qualitynumber.certificates}</f:format.nl2br>" glue="<br />" as="expCertificates">
if artnumbers.qualitynumber.certificates is empty, it returns teh string "array".
Is that a bug?
You are using the ViewHelper. This ViewHelper replaces newlines in a string (!) with
tags. You cannot use it for an array and that's why it returns "array".
I don't know why you need the explode viewHelper. Why don't you just iterate through your certificates?
<f:for each="{artnumbers.qualitynumber.certificates}" as="certificate">
{certificate}<br />
</f:for>
EDIT: If certificates is a string containing newlines, use the newline as glue for explode:
<v:iterator.explode content="{artnumbers.qualitynumber.certificates}" glue="\n" as="expCertificates">
You could also try to use CONSTANT:LF in glue as suggested in the documentation of the ViewHelper: https://fedext.net/viewhelpers/vhs/master/Iterator/ExplodeViewHelper.html
v:iterator.explode when used with the as argument implies the variable assigned to as is only available inside the tag content:
<v:iterator.explode content="1,2,3" as="numbers">
{numbers} is an array
</v:iterator.explode>
{numbers} is no longer defined.
This behaviour changed from VHS 1.7 to 1.8 (from memory).
Alternatively, do:
{artnumbers.qualitynumber.certificates
-> f:format.nl2br()
-> v:iterator.explode(glue: '<br />')
-> v:var.set(name: 'extractedCertificates')}
<f:for each="{extractedCertificates}" as="certificate">
{certificate}
</f:for>
Or better, but assumes your lines are ONLY separated by a single line break:
{artnumbers.qualitynumber.certificates
-> v:iterator.explode(glue: 'constant:LF')
-> v:var.set(name: 'extractedCertificates')}
<f:for each="{extractedCertificates}" as="certificate">
{certificate}
</f:for>
Which of course lets you skip the nl2br step.
Even more compacted:
<f:for each="{artnumbers.qualitynumber.certificates -> v:iterator.explode(glue: 'constant:LF')}" as="certificate">
{certificate}
</f:for>
