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flexxui / flexx

Write desktop and web apps in pure Python
http://flexx.readthedocs.io
BSD 2-Clause "Simplified" License
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Requests Blocked by CORS #719

Open i1Fury opened 2 years ago

i1Fury commented 2 years ago

It isn't 100% clear to me how to write a flexx app based around asyncio. I read through:

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    Was async ever integrated directly into flexx? I couldn't find the commit :P

i1Fury commented 2 years ago

Update: I managed to get several asynchronous versions working, but I can for the life of me send a request to an external API. For starters, most request packages for python cant be compiled by PScript. Also, flexx uses a browser so it follows CORS. It blocks all requests to other domains. How am I supposed to build my app that relies on an API(like a lot of apps do), if the UI is blended in with the backend? Is there a way I can have a backend to the UI running that isn't compiled by PScript nor blocked by CORS?

gwingnhbc commented 2 years ago

The UI isn’t blended with the backend at all. For my database and rest app my backend parent is a flex py-object which has all the pure python classes in that can’t be handled in pscript, then the browser just sends events to it. Essentially my entire app is in python and just the ui in pscript. You do (or at least did when I wrote my stuff) have to have a py-object root object for this.

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Update: I managed to get several asynchronous versions working, but I can for the life of me send a request to an external API. For starters, most request packages for python cant be compiled by PScript. Also, flexx uses a browser so it follows CORS. It blocks all requests to other domains. How am I supposed to build my app that relies on an API(like a lot of apps do), if the UI is blended in with the backend? Is there a way I can have a backend to the UI running that isn't compiled by PScript nor blocked by CORS?

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i1Fury commented 2 years ago

I switched to Neutralino using a python backend extension, i like it a lot better than Flexx at it's current state after messing around with Flexx for about 6h. I am gonna keep a close eye on this project because when it comes out of beta it'll be fire.

almarklein commented 2 years ago

I managed to get several asynchronous versions working, but I can for the life of me send a request to an external API. For starters, most request packages for python cant be compiled by PScript. Also, flexx uses a browser so it follows CORS.

The tricky part with Flexx is that both the server and client code are in Python, so the look alike a lot. You have to be careful to separate that in your application. Also see the word of caution in the readme. On the server side (e..g. in PyWidget's) you can use the Python async constructs, and you could send requests with e.g. responder or httpx (both are async). On the client side (in most other widgets) you're actually writing JavaScript (via PScript), and you can use JavaScript requests. And yes, you are subject to the browser's security constraints.

I am gonna keep a close eye on this project because when it comes out of beta it'll be fire.

To be honest, I am not actively developing Flexx anymore, so it will probably take a new developer to pull this out of beta, if ever.