onChange event not working on Streamlit 1.34

[dectoplate]

onChange event is not working after Streamlit 1.34 release.

[vikvikvr]

@okld is this repo still mantained?

we love your library and use it extensively throughout our projects
Unfortunately this issue prevents us from upgrading Streamlit 😣

Thanks! 😀

[shuZro]

Bump

[moonbug-car]

Bump x2
@okld it would be great if you could update it, Thank You.

[KhabarovaNina]

Bump
@okld please!

[KhabarovaNina]

Hello!

This issue is related to the refactoring of streamlit in using custom components.

It is possible to restore the previous functionality by replacing in the file /streamlit_elements/core/callback.py:
# from streamlit.components.v1 import components - OLD
from streamlit.components.v1 import custom_component as components - NEW

However, I hope the streamlit developers will fix this issue in future releases.

[vikvikvr]

Thanks @KhabarovaNina a lot!

I made a small script to patch it automatically (needed for our Docker builds), hope it helps other people :)

import os
import streamlit_elements
import re

def patch_streamlit_elements():

    # issue: https://github.com/okld/streamlit-elements/issues/35
    relative_file_path = 'core/callback.py'
    library_root = list(streamlit_elements.__path__)[0]
    file_path = os.path.join(library_root, relative_file_path)

    # Read broken file
    with open(file_path, 'r') as file:
        lines = file.readlines()

    broken_import = 'from streamlit.components.v1 import components'
    fixed_import = 'from streamlit.components.v1 import custom_component as components\n'

    # Fix broken import line
    for index, line in enumerate(lines):

        if re.match(broken_import, line):
            print(f'Replaced broken import in {file_path}')
            lines[index] = fixed_import

    # Update broken file with fix
    with open(file_path, 'w') as file:
        file.writelines(lines)


if __name__ == "__main__":
    patch_streamlit_elements()

[Yeqishen]

vikvikvr

This is awesome, vikvikvr, thank you very much, the script still works great! 👍