[BUG] active_cell docstring is wrong - No key 'row_id' for active_cell in dash_table.DataTable

[Aryalexa]

Hello.
I'm working with dash_table.DataTable and reading the docs I found row_id in the active_cell argument. Examples on the Dash web are using it (https://dash.plot.ly/datatable/interactivity).

- active_cell (dict; optional): The row and column indices and IDs of the currently active cell. 
active_cell has the following type: dict containing keys 'row', 'column', 'row_id', 'column_id'.
Those keys have the following types:
  - row (number; optional)
  - column (number; optional)
  - row_id (string | number; optional)
  - column_id (string; optional)

Context

• dash libraries

dash                               1.4.1
dash-core-components               1.3.1
dash-daq                           0.2.1
dash-html-components               1.0.1
dash-renderer                      1.1.2
dash-table                         4.4.1

The bug

It seems active_cell['row_id'] is not supported.
This is what I get exploring the active_cell dictionary

', '.join(['{}:{}'.format(k, v) for k, v in active_cell.items()])
# result: row:5, column:4, column_id:Company

I also have a screenshot where I force the code to get the value and get an error.

[arrubyyan]

one way I found to go around it is using:
virtual_row_ids[active_cell['row']]
(virtual_row_ids <= component_property='derived_virtual_indices'),

is there any better way? cause the 'row' keeps changing during the transformation

[Rothenhouser]

I think this may just be a problem with slightly unclear documentation. In case anyone else lands here after googling this: If you want to use the row_id of the active cell, the data property in your data table must have an 'id' key for each row. That worked for me.

This is made clear in the section on row IDs and the example here: https://dash.plot.ly/datatable/interactivity.