Compute a String with length=0 depending on a precondition

Modeling
,
1

Hello,

I defined following coputation:

grafik

What I try to model, is following:
If the value “kostenlos” was selected inside the Multi-Select Kosten*/value, then the A12-Field /xflb/kosten/kostenlos must habe a String of length=0.

Is is technically possible, that the A12-Documents later have a Field with the value “”, or will fields with value “” not appear in the Documents?

Thank you
a12User

2

Hi,
that should be technically possible. In Kernel we have following methods with which this can be configured/controlled:

Typescript

  • DocumentService#removeEmptyFieldsAndGroups(document: object, model: DocumentModel): object;

Java

  • DocumentDeserializationConfig#removeEmptyFieldsAndGroups
  • DocumentSerializationConfig#removeEmptyFieldsAndGroups
  • IDocumentService#removeEmptyFieldsAndGroups

As far as I can see, the standard behavior at Client and in DS is preserving field instances with “”-value.

Note: From Kernel point of view, field instances with value “” or null are handled as if they are not filled.