How can I get value selected in a dropdown inside Datatable

Dash Python
1

Hi,

I have a Datatable with rows that allows users edition.

cols = [{"name": i, "id": i} for i in df.columns]
cols[0]["presentation"] = 'dropdown'

return hmml.Div ([dash_table.DataTable(
                            id='subproducts-table',
                            columns=cols,
                            data=df.to_dict('records'),
                            page_size=20,
                            fixed_rows={'headers': True},
                            editable=True )
})

some of the columns have a dropdown as editable component.
My question is how can I obtain the value selected in a dropdown inside datatable via callback??

PS: I can get all data after a selection using the parameters data and data_previous parameters… so if someone know how the make the diff between them, will help me too.

PS 2: the active_cell parameter don’t return the cell with a dropdown.