Sidebar gets displayed all the time despite check

Using Streamlit
1

I am new to using Streamlit and am creating an app which must have a login page and after login, it must display some query results. The results page must have a sidebar. However, the sidebar shows up now even on the login page despite the sidebar code being inside the function that renders the result page only after a condition checks True. The code is roughly as follows. What am I missing or doing wrong?

def app_title():
    st.title("App Title")
    st.write("App Description")
    
def login_page(placeholder):
    with placeholder:
        login = st.container()
        with login:
            app_title()
            st.write("\n")
            st.write("\n")
            st.subheader("Login")
            st.text_input("Username")
            pwd = st.text_input("Password",type="password")
            if len(pwd) > 0:
                return True
    return False

def results_page(placeholder):
    with placeholder:
        results = st.container()
        with results:
            app_title()
            st.write("\n")
            st.write("\n")
            sps_list = ['XYZ', 'ABC']
            selected_sps = st.sidebar.selectbox("Choose sps", sps_list)
            from_date = st.sidebar.date_input('From', date.today())
            to_date = st.sidebar.date_input('To', date.today())
            submit = st.sidebar.button("Submit")
                    
            if submit:
                st.markdown(f"\n**Results for {selected_sps}**")
                res = search_for_sps(selected_sps, from_date, to_date)
                metadata = fetch_metadata(res)
                metadata_df = pd.DataFrame(metadata)
                st.dataframe(metadata_df)
                
def main():
    main_placeholder = st.empty()
    success = login_page(main_placeholder)
    if success:
        main_placeholder.empty()
        results_page(main_placeholder)
        
if __name__ == "__main__":
    main()
2

Hi, if you do not want to let the sidebar expanded, you can set like this:

import streamlit as st
st.set_page_config(initial_sidebar_state="collapsed")

[your other code put here]
3

Thank you!

I tried it out and It now collapses the sidebar but somehow the placeholder isn’t getting cleared after entering login credentials. Also, I didn’t understand the execution flow - how the sidebar was getting displayed in the first place despite it being inside a function that must execute only when the condition turns True (which is the case only after entering the password).

4

you can expand and let sidebar show at any part of your code, whatever in the start, middle or end.

1 Like
5

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