Make it easier to access the updated item in mo.ui.data_editor when it changes

[ruuffo]

Description

Hi,

I was playing around with mo.ui.data_editor, and I wanted to get the changed row's ID (or index) and column name, as well as the new value, when a cell value was changed, so that I could update it in an SQL database, but I couldn't find a simple way to do this. I thought it might be a good feature to suggest.

Suggested solution

Instead of passing the whole dataframe in parameter of the callable object in the on_change parameter (which is already accesible via mo.ui.data_editor().value attribute), it could be nice to pass the row index (or a row_id defined on the initialization of the mo.ui.data_editor) the column in which the change happened and the new value.

Are you willing to submit a PR?

• Yes

Alternatives

No response

Additional context

No response

[Light2Dark]

This makes sense! You can actually access the edits being made but it is a private attribute

data_editor = mo.ui.data_editor(...)
data_editor._edits

Then, you can get the latest edit(s). Do you think this would suffice and maybe we can make this attribute public, or you need a on_edit callback? We may not modify on_change because it can break compatibility.

[ruuffo]

This makes sense! You can actually access the edits being made but it is a private attribute

data_editor = mo.ui.data_editor(...)
data_editor._edits

Then, you can get the latest edit. Do you think this would suffice and maybe we can make this attribute public, or you need a on_edit callback? We may not modify on_change because it can break compatibility.

Hi,

Thank you for your answer.

I was not aware about the existence of this private attribute, I'm gonna try with it. But yes maybe for a better understanding for the future users, having an on_edit parameter could be a great solution 👍

[Light2Dark]

Let us know what you think once you use it. We don't recommend using private attributes (they can change), but it's different than on_edit since you only get the latest edit. We can also make edits public imo