[Coming soon] Create multipages app programmatically

[PaleNeutron]

Currently, if we want to create a multipages app, we have to put page files into pages folder and give them names like 1_pageapple.py, and pageapple will show as label on web page.

This will make three problems:

1. It is hard to arrange pages. if I already have 10 pages and I want to insert a new page in index 2, I have to rename 8 files.
2. The web project structure is too rigid, we can not put some util modules in pages directory or put different pages in any where we like.
3. filename is not clean. Actually, label on web page is not the style of my filenames, I do not like emoji in my filenames.

I think streamlit at least should provide a manually model, just like:

st.config(auto_pages=False)

st.add_pages(
  {
  "🌲label1_name%test": "page1_file_path.py",
  "📚label2_name": "folder/page1_file_path.py",
  }
)

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[andreaschiappacasse]

+1, would love this

[gaspardc-met]

+1 on @PaleNeutron 's suggestion,

• having emojis in filename is uncomfortable and seems rather unnecessary to obtain the desired outcome
• It collides with path autocomplete in the terminal, with good practices and linters (like pylint) and for good reasons 👍
• defining the pages manually allows for finer page controls (some pages should not be displayed when the webapp is in production, for example)

[jrieke]

Hey all!

Thanks for your feedback, this is super helpful. We definitely want to fix most of the issues you mentioned, since we heard similar feedback from other users. I don't know yet in which way we'll solve it, but we are on it! ;)

[gaspardc-met]

Hey @jrieke ,

Thanks for the update on this issue, available to discuss use cases and why we'd love finer control over the page definition for production web apps 👍

[jrieke]

@gaspard-met Yeah actually it would be great to discuss if you have more advanced use cases! Want to shoot me an email at johannes.rieke@snowflake.com, and we can schedule something if you like?

[gaspardc-met]

Hi @jrieke ,

I had missed your prompt answer, my bad
Just sent you an email, if it's still relevant

[nbttn1]

Great idea. This would allow us to control how the labels look, independent of the filenames. For example, the landing page might be main.py, but we want to label it "My Home Page". Hope this idea makes it into streamlit.

[jrieke]

Note to myself: also look at #5506, which contains some ideas on how to do this with a YAML file.

[matkozak]

Having a configuration file would be nice, but personally I am really interested in the ability to display pages conditionally.

[marcosberghahn]

I also want to show and hide pages conditionally! For different user groups.