Use value of component created by callback as input in another callback

📊 Plotly Python
1

I want to use in a Callback the values ​​of a component which is also created by a callback. Basically I have a radioiteme component whose calback returns a checklist component. and I want used the values ​​from this checklist in a python object

I have this error

A nonexistent object was used in an Input of a Dash callback.

2

Hi @marctelly

That can happens in the first loading, because the value is not there jet.
See prevent update here: Advanced Callbacks | Dash for Python Documentation | Plotly

3

I used prevent update but I got the same error

A nonexistent object was used in an `Input` of a Dash callback. The id of this object is `number-of-title` and the property is `value`. ...
4

the solution was prevent_initial_call=False on the same page. Thank you @Eduardo

1 Like