Using the Dataprocessor from TYPO3 8 - typo3

Question

I try to use the dataprocessor from TYPO3 8 to make my menu.
I have this code in my TypoScript script:
page = PAGE
page{
10 = FLUIDTEMPLATE
10 {
file = fileadmin/abis/templates/BootstrapTmpl.html
partialRootPath = fileadmin/abis/Partials/
layoutRootPath = fileadmin/abis/Layouts/
}
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
10 {
entryLevel= 0
excludeUidList = 27,30,31
levels = 5
#includeSpacer = 1
titleField = nav_title // title
as = huhu
}
}
...
}
And this one in a section:
<f:section name="myMenu" >
<f:debug title="title">{huhu}</f:debug>
<f:cObject typoscriptObjectPath="obj.logo" />
<ul class="nav navbar-nav navbar-left">
<f:for each="{huhu}" as="menuItem">
<li>
{menuItem.text}
<f:if condition="menuItem.subItems">
<f:render section="myMenu" arguments="{myMenu: menuItem.subItems}" />
</f:if>
</li>
</f:for>
</ul>
</f:section>
My HTML output is empty. The variable {huhu} is empty. And I don't know why. Does anybody have an idea?

Answer 1

Try to put your dataProcessing into page.10:
page = PAGE
page {
10 = FLUIDTEMPLATE
10 {
file = fileadmin/abis/templates/BootstrapTmpl.html
partialRootPath = fileadmin/abis/Partials/
layoutRootPath = fileadmin/abis/Layouts/
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\MenuProcessor
10 {
entryLevel= 0
excludeUidList = 27,30,31
levels = 5
#includeSpacer = 1
titleField = nav_title // title
as = huhu
}
}
}
}

Answer 2

First, the "dataProcessing" has to be done inside page.10. And second you have to give your arguments over to your section in the "f:render" tag. Don't know if you do that, because that part is missing in your example code.

Answer 3

I had a similar problem and my typoscript code was correct. However, I forgot to add
arguments="{_all}"
when calling
<f:render partial="header" arguments="{_all}" />
in my layout.
You can also use <f:debug>{huhu}</f:debug> in your Partial, if huhu is null you might have forgotten about the arguments="{_all}".