workaround is to assign dataset to ViewModel. so ViewDataSet is obsolete?

The only available methods to pass data to the template is to use one of the following indexed properties:

    property ViewData[const aModelName: string]: TObject read GetViewData write SetViewData;
    property ViewDataset[const aDataSetName: string]: TDataSet read GetViewDataset write SetViewDataset;

The other ones are deprecated.

yes, my issue is related to : ViewDataset ;
is managed only in TMVCTemplateProViewEngine not in mustache :)

Can you provide a small self-contained example?

I found the problem you are talking about. Did you tried templatepro engine? Are you starting a new project?

Hi daniele! yes, in templatepro ViewDataset is correctly used.
it's the only unit in all dmvc where is considered :)

Now it should be fixed (all unit tests passes). Let me know if your problem has been fixed.