Where do I place the code that does not respect the business rule, but is it a necessity for the user to submit, such as combobox, dataTables, texboxAutoComplit ...?
details:
Currently working in layers (presentation, application, domain, data ...) we try to model as close as possible to the business rule using the ubiquá language, separating delimited contexts, creating aggregates, entities, value objects ... complete package DDD, but when it arrives at the moment of developing the presentation, we end up "filthy" some interfaces with methods to meet the demand of display frameworks. For these queries we are referring the date to the presentation but still it is not good enough.