Multipage Streamit - persistent state across pages

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Thu Jan 19 2023 20:12:13 GMT+0000 (Coordinated Universal Time)

Saved by @tofufu #python #streamlit

import streamlit as st



#app.py
import streamlit as st
import multipage_streamlit as mt
import page_1, page_2, page_3_args

st.write("Main page")
num_pages = 3
# pages = ["Page 1", "Page 2"]
pages = []
for i in range(1, num_pages + 1):
    pages.append("Page 3_" + str(i))
pages.insert(0, "Page 1")
pages.insert(1, "Page 2")


# Nav radios
page = st.radio(label="Welcome, please select a calculator:", options=pages, horizontal=True)
# st.write('<style>div.row-widget.stRadio > div{flex-direction:row;}</style>', unsafe_allow_html=True)
# st.markdown("---")

app = mt.MultiPage()
# app.add("Page a1", page_1.app)  # no parentheses or else it will run!
# app.add("Page b2", page_2.app)  # ^ditto
for i in range(1, num_pages+1):
    app.add("Page 3." + str(i), page_3_args.app)
# app.add("Page 1", page_1.app)
# app.add("Page 2", page_2.app)

# app.run_selectbox()

# Nav between case pages
if page == pages[0]: page_1.app()
elif page == pages[1]: page_2.app()
elif page == pages[2]: page_3_args.app(1)
elif page == pages[3]: page_3_args.app(2)
elif page == pages[4]: page_3_args.app(3)

# Session states
st.write(st.session_state)
# st.write(st.session_state["_state_"])
# st.write(st.session_state["_state_"]["page_1:x"])
# st.write(st.session_state["_state_"].keys())
# st.write(st.session_state["_state_"].values())



# page_1.py
import streamlit as st
from multipage_streamlit import State
# import page_1, page_2

def app():
    # state = State("sharing")
    # state = State(__name__)
    
    st.header("Page 1")

    # # if "page_1" not in st.session_state:
    # #     st.session_state["page_1"] = 9

    # # p1_text = st.number_input(label="Sharing state", value=st.session_state["page_1"], key="page_1")
    # p1_text = st.number_input(label="Sharing state", key=state("x", 9))
    # st.write(st.session_state[__name__ + ":x"])
    # st.number_input(label="Testing state", value=st.session_state[__name__ + ":x"])
    # # st.number_input(label="Testing state", key=st.session_state["_state_"][__name__ + ":x"])
    # st.write("\_state_")
    # # st.number_input(label="Testing state", value=st.session_state[__name__ + ":x"], key=state("x", 3))
    
    st.number_input(label="Testing shared state across pages page 1", key="testing")

    # # st.write(st.session_state["page_1"])
    # # st.write(st.session_state["page_2"])
    
    # state.save()

    return



# page_2.py
import streamlit as st
from multipage_streamlit import State

def app():
    # state = State("sharing")
    # state = State(__name__)
    
    st.header("Page 2")

    # # p1_text = st.number_input(label="Sharing state", value=st.session_state["page_1"], key="page_1")
    # p2_text = st.number_input(label="Indiv state", key=state("x", 1))
    # # p1_text = st.number_input(label="Sharing state", key=st.session_state[["_state_"]["page_1:x"]])
    
    # # st.write(__name__ + ":x")
    # # st.write(st.session_state[__name__ + ":x"])
    # # st.write(st.session_state)
    # st.write(state("x", 1))

    # # st.write(st.session_state["page_1"])
    
    st.number_input(label="Testing shared state across pages page 2", key="testing")


    # # if "page_2" not in st.session_state:
    # #     st.session_state["page_2"] = 12

    # # p2_text = st.number_input(label="Own state", value=st.session_state["page_2"], key="page_2")

    # # st.write(st.session_state["page_2"])
    
    # state.save()

    return



import streamlit as st
from multipage_streamlit import State

def app(case_x):
    state = State(__name__)
    
    st.header("Page 3")

    p3_text = st.number_input(label="Indiv state", key=state(str(case_x), 20 + case_x))
    p3_selbox = st.selectbox(label="Indiv state", options=[21, 22, 23], key=state(str(case_x) + "_select", 20 + case_x))
    
    state.save()

    return

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