# viewModel
import streamlit as st

# model
def setModel(key, defaultValue=""):
    if key not in st.session_state:
        st.session_state[key]=defaultValue if defaultValue else ""

def getModel(key):
    return st.session_state[key]

def updateModel(key, value=""):
    setModel(key, value)
    st.session_state[key]=value if value else 0 if type(value) == "int" else "" 

# controller
def applyBindingController(render):
    render()