How do I enhance an existing streamlit component

Using Streamlit
1

Hello.

I would like to use a link_button instead of a button in my app but I want to capture if the link_button has been pressed and if so, execute some action.

The reason I need a link_button is because it does not force a rerun.

Basically I am asking of there is a way to “wrap” the link_button component and add basic functionality to return true or false if it has been clicked.

Thanks!

2

What kind of action? No action will be performed on the python side without a rerun.

3

If I understand it correctly, the beauty of link_button is it doesn’t force a rerun.

I have a scenario where I have a series of buttons right now (st.button), each button’s label is a URL and if a button has been pressed, it opens a tab with the URL but also does something that is UI independent (send feedback to an S3 bucket on AWS). I want to do the same but with a link_button.

Currently, the rerun forced by st.button is destroying the layout of the container all these buttons are a part of. If I do the same container with link_button(s) - the layout is undisturbed because there is no rerun (is my understanding). However, with link_button I lose the ability to submit the feedback because I don’t know that a link_button has been clicked.

4

The ugliness of it is that your application doesn’t know when the user clicks on it. That is what it returns None and takes no callback arguments.

5

That’s kind of what I said, isn’t it? :wink: I am looking for a way to “enhance” link_button to return a true/false if it was clicked. Or are you saying as soon as there is “feedback” from a component - rerun is forced?

Or do I need to write a whole new component?

6

Yes, that is how components communicate with the application.

That would work if you can perform the action using javascript in the browser, without talking to the python app.

8

Is there a way to “attach” javascript functions to existing components “live” - components like link_button or do I need to write a whole new link_button implementation of my own?

9

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