Hi, I would like to share components, like a selectbox, across the different pages, in particular in the sidebar. In order to keep the selection across the pages I need to set a default index, the one corresponding to the last item selected. The selection works fine the first time and is kept when …

Here is a solution: instead of setting the output to st.session_state one can use the key argument. Example: choices = ['A', 'B', 'C'] if 'my_choice' not in st.session_state: st.session_state = choices[0] index = 0 else: index = choices.index(st_session_state['my_choice']) st.selectbo…

Problem with session state / components in sidebar in multipage app

🎈 Using Streamlit

arnaud July 12, 2022, 10:48am 3

Hi @blz,

Sorry I didn’t see your answers here nor this thread there where my response didn’t grasp your problem.

Happy that you found a fix, by the way for future reference here is the problem that happened on your app (see how the widget doesn’t update the first time once it’s on a page)

CleanShot 2022-07-12 at 12.41.58

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Problem with session state / components in sidebar in multipage app

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