Enumeration List (drop down list)

Ernesto

Dear all,

I am a beginner in Axon Ivy Designer. Currently, I am building an application and have some dataclass fields that should contain an enumeration list for the user to select from via the UI Form. Could anyone share the best way to achieve this?

Thanks a lot in advance!

Louis Müller

Welcome Ernesto

I would recommend that you take a look at our html demos, which contain many examples. See https://market.axonivy.com/html-dialog-demo

Please find here a very simple enum form selection sample (created with v12.0.4):
enum-samplee.iar

Ernesto

Louis Müller
Thank you Louis, I will check out the demo and de test you provided. Very much appreciated!

mhoffmann

If you want to store more than one enum value and use the JPA (which is not a dataclass, just in case), there are a few approaches which work, the most common one is the approach using a link table with the @ElementCollection and @CollectionTable annotation - here's a related stackoverflow question.

I usually prefer storing the values as a string and just adjust the getter/setters to split/join it with a delimiter, but this is not best practice, just something which works.

Ernesto

mhoffmann
Thank you for your response :-)

Ernesto

Hi Louis,
I am coming back to your solution for enumeration fields, it just works fine, but I get this warning "The type 'List<mutatie.Mutatiesoort>' is blacklisted for being persisted. The internal representation of this type might change and make data unrecoverable: The following types are blacklisted: 'ch.ivyteam.ivy.scripting.objects.List'." What does it mean?
Kind regards,
Ernesto