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zauberzeug / nicegui

Create web-based user interfaces with Python. The nice way.
https://nicegui.io
MIT License
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ui.scene.gltf() assets are cached, hinders dynamic updating #3998

Open bl0x opened 2 days ago

bl0x commented 2 days ago

Description

I'm trying to write an app, where a GLTF file is procedurally generated via pythonOCC and then saved to a file. This file is subsequently loaded with ui.scene.gltf() to be displayed on screen. The user can make changes to how the file is generated through the app and the file is updated with the resulting changes to the geometry.

Since the filename stays the same, and the file is cached for 3600 seconds, updates to the file are not shown immediately in the app, which is not a nice user experience.

I've tried to work around this by applying this method: https://github.com/zauberzeug/nicegui/discussions/588, but it did not help.

What worked is to make a change here https://github.com/zauberzeug/nicegui/blob/24ee85a46cffed005fa6090de4f9c69ee6f807dc/nicegui/staticfiles.py#L10 and set max-age to 1 instead of 3600.

This is fine for my app, but of course not useful in the general case.

A useful extension might be to be able to specify max-age as an optional parameter for each static files mapping.

falkoschindler commented 22 hours ago

Hi @bl0x,

Adding a max_cache_age parameter to app.add_static_files and app.add_static_file sounds like a great idea. Would you like to create a pull request?

Apart from that, I'm wondering why the technique from #588 doesn't work. Can you, by any chance, provide a minimum reproducible example demonstrating the problem? Thanks!