How to add alert below input box location

Custom Components
1

I would like to place the st.error message directly below the input box. However, I cannot seem to place it there in any way. It always appears above the input message. I tried using st.empty and container to place it, but that did not work. Thanks in advance

Here is my code

import streamlit as st

st.title("Welcome to  compute Request")

if 'something' not in st.session_state:
    st.session_state.something = ''

if 'widget' not in st.session_state:
    st.session_state.widget = ''



input_value = st.text_input('Something', key='widget')


def submit():
    if not input_value:
      st.error('Please enter a value')
      st.session_state.something = ''
      
    else:
        st.session_state.widget = ''
        st.session_state.something = input_value
        
   
 
        
st.button('Submit', on_click=submit)

st.write(f'Last submission: {st.session_state.something}')

print(st.session_state.something)
2

Hi @mtafadar

How about this code?

import streamlit as st

if 'something' not in st.session_state:
    st.session_state.something = ''

st.title("Welcome to compute Request")
input_value = st.text_input('Something', placeholder='Please enter a value')
if input_value == 'quit':
    st.error("You can't quit right now")

elif input_value != '' and input_value != 'quit':
    st.session_state.something = input_value
    st.write(f'Last submission: {st.session_state.something}')

Cheers

3 
import streamlit as st

st.title("Welcome to  compute Request")

if 'something' not in st.session_state:
    st.session_state.something = ''

if 'widget' not in st.session_state:
    st.session_state.widget = ''



input_value = st.text_input('Something', key='widget')


def submit():
    if not input_value:
        st.session_state.widget = ''
        st.session_state.something = "Write Something"
        return True
      
    else:
        st.session_state.widget = ''
        st.session_state.something = input_value
        return False
        
   
     
x = st.button('Submit', on_click=submit)
if x:
    st.error('Please enter a value')
else:
    st.write(f'Last submission: {st.session_state.something}')

print(st.session_state.something)
4

The error is shown even when there was some input. The idea was to clear the widget input, but no error should be shown if there is some input. If the input is empty, then the error should be shown

5

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