TYPO3 DataProcessing: How to control the order of the output? - typo3

Question

I have a list with content uids from a mask custom content element. The editor can choose some content elements from a list. And now I want the complete data from these content element uids. So I tried DatabaseQueryProcessor.
I am trying with DataProcessing for the first time.
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
table = tt_content
uidInList.field = tx_mask_sectionmenu_contentitems
as = items
}
}
This almost works, but the order in fluid output does not match the order of the original list. How can I force the same order for the fluid output as in the original list?
Or do I have to go over the SplitProcessor first?
This SplitProcessor works so far, but I don’t know what to specify in the next DatabaseQueryProcessor?
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\SplitProcessor
10 {
if.isTrue.field = tx_mask_sectionmenu_contentitems
delimiter = ,
fieldName = tx_mask_sectionmenu_contentitems
removeEmptyEntries = 1
filterIntegers = 0
filterUnique = 1
as = items
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
table = tt_content
???
as = contentItem
}
}
}
}
The sorting field is not what I want. I want the same sorting like the editor has selected.
How can I solve this?

Answer 1

As far as I can see, the SplitProcessor does not support any further dataProcessing like other DataProcessors (at least if haven't noticed any dataProcessing on the list of options like for others): https://docs.typo3.org/m/typo3/reference-typoscript/main/en-us/ContentObjects/Fluidtemplate/DataProcessing/SplitProcessor.html
Here is a workaround, that also works with TYPO3 11:
https://forge.typo3.org/issues/86151
In short:
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
table = tt_content
uidInList.field = tx_mask_sectionmenu_contentitems
selectFields.dataWrap = *,FIND_IN_SET(uid,'{field:pages}') AS foobar_sort
orderBy = foobar_sort
as = contentItem
}
}

Answer 2

I tested uidInList.field = tx_mask_sectionmenu_contentitems but it doesn't helped to get the records sorted by the order of the comma-separated uid list.
The nested approach doesn't worked at all. I had a look in the code and found that only DatabaseQueryProcessor, LanguageMenuProcessor and MenuProcessor are able to process the content with another MenuProcessor.

Answer 3

According to https://docs.typo3.org/m/typo3/reference-typoscript/master/en-us/ContentObjects/Fluidtemplate/Index.html#dataprocessing
# All properties from .select can be used directly
# + stdWrap
colPos = 1
pidInList = 13,14
and checking the select properties https://docs.typo3.org/m/typo3/reference-typoscript/master/en-us/Functions/Select.html gives you
uidInList =
pidInList =
recursive =
orderBy =
groupBy =
max =
begin =
where =
languageField =
includeRecordsWithoutDefaultTranslation =
selectFields =
join =
leftjoin =
rightjoin =
So instead of using nested dataProcessing here, you might want to skip orderBy and go for uidInList instead.
uidInList.field = tx_mask_sectionmenu_contentitems
If you want to stay with the nested approach, you should still use uidInList, but slightly different
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\SplitProcessor
10 {
if.isTrue.field = tx_mask_sectionmenu_contentitems
delimiter = ,
fieldName = tx_mask_sectionmenu_contentitems
removeEmptyEntries = 1
filterIntegers = 0
filterUnique = 1
as = items
dataProcessing {
10 = TYPO3\CMS\Frontend\DataProcessing\DatabaseQueryProcessor
10 {
table = tt_content
uidInList.field = current
as = contentItem
}
}
}
}
To get the actual field name for "current" you might want to put <f:debug>{items}</f:debug> into your Fluid template. Maybe it has to be data = current instead, if the actual behaviour of current is available in this context.