Streamlit button with link

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1

After searching all over the web for a simple and elegant solution, but not finding one to my liking, I created a solution to open links in a new tab by clicking on a streamlit button, without using any 3rd party packages.

source code:

from streamlit.components.v1 import html
def open_page(url):
    open_script= """
        <script type="text/javascript">
            window.open('%s', '_blank').focus();
        </script>
    """ % (url)
    html(open_script)

How to use - Simply add the function as an on_click parameter to the streamlit button.

streamlit.button('Open link', on_click=open_page(url))
8 Likes
2

Wow! I love that workaround, @benceszarka!

Thanks for sharing it with us.

Happy Streamlit-ing! :balloon:

Charly

1 Like
3

Hi @benceszarka

Thanks for sharing the wonderful solution. I really like how you’re using callback to call for the URL on click.

I’d like to suggest a minor tweak to your code by passing the function name to the on_click parameter (and passing the URL to the args parameter) instead of using a function call with arguments (open_page(url)).

Suggested tweak as follows:

st.button('Open link', on_click=open_page, args=('https://streamlit.io',))

In the original solution, the app loads the provided URL as a new page immediately; this happens before clicking on the button.

By tweaking the code, the app loads (the URL is not yet called) and after clicking on the button a new page loads and goes to the URL.

Code of original solution

import streamlit as st
from streamlit.components.v1 import html

def open_page(url):
    open_script= """
        <script type="text/javascript">
            window.open('%s', '_blank').focus();
        </script>
    """ % (url)
    html(open_script)

st.button('Open link', on_click=open_page('https://streamlit.io'))

Code of proposed tweak

import streamlit as st
from streamlit.components.v1 import html

def open_page(url):
    open_script= """
        <script type="text/javascript">
            window.open('%s', '_blank').focus();
        </script>
    """ % (url)
    html(open_script)

st.button('Open link', on_click=open_page, args=('https://streamlit.io',))
7 Likes
4

Hi.
Due to the limited environment, I distribute streamlit as ‘Network URL’ and use it.

I decided to apply this code a little bit because of the problem that Chrome only runs locally when an external user presses a button.

Can I enter the local pdf file path instead of url in Chrome to open it in a new tab?

I entered a path starting with file:// and ran this code, but it didn’t work.

5

Hi @Gyunald

Instead of pointing to a local file path, can you serve the PDF from a web server and point to that URL?

6

No, it’s not a web-supplied pdf.
It’s a file in a network share folder, and we’re trying to access the file faster.
It doesn’t matter if the file is pdf or image.

Thank you.

7

I used st.download_buton as the next best option. Although downloading the file to an external computer was successful. How is it possible to open a downloaded file right away?

1 Like
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