GitHub Milestone Tracker for working application?

[HeyMeco]

I wanted to ask if there is a way to follow the progress until when bahn.guru will be up and working again?
Maybe as a GitHub Issue / Milestone so others can contribute too on certain aspects?

[wsg-superstar]

The maintainer is just fake updating the repository. No idea why though. Better to archive than to leave it like this.

[juliuste]

Hi @HeyMeco, thanks for asking! My problem at the moment is that I'm lacking time, and documenting these things in a way which enables others to contribute takes more time (for now) than to work on the actual project. My plan for now is to get some basic version working again and then document it so that others can contribute. I'll leave this issue open until then.

@wsg-superstar the reason why I'm only updating the date in this repo is that I have a separate codebase for the re-write (because I completely re-built the site on next.js, which basically is a 100% different codebase). I will replace the code in this repo when the new version goes live.

[hackgrid]

Unnecessary rewrite to a new shinier javascript framework that takes many months instead of fixing up the old broken codebase in a few hours, absolut classic.

[hackgrid]

I don't know anything about the DB infrastructure, but I looked into this myself:

I went to bahn.de, did a search and used the devtools to find

• https://www.bahn.de/web/api/reiseloesung/orte
• https://www.bahn.de/web/api/angebote/tagesbestpreis

That took like 2 minutes.

I wrote a simple PHP script which simply cloned the existing GET/POST requests raw and it worked!
I simply replaced the tagesbestpreis parameters from html forms, looped over the whole month and only displayed the lowest prices.

That took like 30 minutes and I've got my working personal bahn.guru now!

Also it is lot faster than the original bahn.guru.

I really do not understand, why you need gigabytes of fucking javascript infrastructure nowadays,
with 1000 libraries, Docker containers and whatever - I looked into db-vendo-client and all that the other stuff before, and I do not know what all these Caches, Servers, Proxies even mean and why they are needed.

It seems everybody forgot how to code nowadays and feels the need to do extreme overengineering for a simple tool like this.
This is not a enterprise software with milions of users.

[HeyMeco]

@hackgrid could you make that public even if it’s just "hacked" together?

[hackgrid]

@HeyMeco of course, check out the new bahn.sensei:
https://github.com/hackgrid/bahn.sensei/ !

Sure, it is very ugly and hacky, but it only took some hours and it actually works!

And you can put it on any PHP webspace and it will just work,
without 10 million lines of javascript code & packages, and without any dependency managers or shit!

[juliuste]

Thanks for sharing, and great that it works! However, I'd kindly ask you to reconsider your language when talking about the work of people who provide software for free, sometimes for years or even decades. If you disagree with the tech setup, just don't use the project, but I don't understand why you feel the need to make negative comments about it, that just de-motivates everyone involved.

[hackgrid]

Well I checked and trusted all these messages "bahn.guru will be back in 2 weeks, promise!" all these months and thought it would be a difficult technical problem. I had a total meltdown when I discovered all these waiting time was because of unnecessary rewrite to another new shinier JavaScript framework (which I hate so much professionally) and that the DB backend actually is totally easy to use. They even use german names and descriptors instead of forcing everything to english bullshit words, which is so common nowadays. So I stand with my original point, that they should just have fixed up the old website before wasting years on a stupid rewrite. Julius Tens ***@***.***> schrieb am Do., 10. Juli 2025, 13:09:

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*juliuste* left a comment (juliuste/bahn.guru#50) <#50 (comment)> Thanks for sharing, and great that it works! However, I'd kindly ask you to reconsider your language when talking about the work of people who provide software for free, sometimes for years or even decades. If you disagree with the tech setup, just don't use the project, but I don't understand why you feel the need to make negative comments about it, that just de-motivates everyone involved. — Reply to this email directly, view it on GitHub <#50 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAANGLEDO7AZSFDWXZKWR4T3HZCW3AVCNFSM6AAAAAB7AS37PCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTANJWHE3TENJZGI> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[jschae23]

I created a Next.js application based on @hackgrid's PHP code https://github.com/jschae23/bahn.vibe. It includes the referenced 10 million lines of javascript code & packages, and has dependency managers and shit

[hackgrid]

Cool, thx! I will create a vanilla js version someday without the gigabytes of dependencies! :) jschae23 ***@***.***> schrieb am Fr., 25. Juli 2025, 22:43:

…

*jschae23* left a comment (juliuste/bahn.guru#50) <#50 (comment)> I created a Next.js application based on hackgrid's PHP code https://github.com/jschae23/bahn.vibe. It includes the referenced 10 million lines of javascript code & packages, and has dependency managers and shit — Reply to this email directly, view it on GitHub <#50 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAANGLGF4MGNGCKADDFWDVD3KKJGHAVCNFSM6AAAAAB7AS37PCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTCMRQGI4DSNZWGA> . You are receiving this because you were mentioned.Message ID: ***@***.***>

[HeyMeco]

Okay so when is someone going to host one to the public though? :D

[hackgrid]

@jschae23 solution is public:

https://bahn-vibe.vercel.app/

But it does not work of course because of the 10 million lines of javascript, big suprise:

Fehler bei der Bestpreissuche - Backend not responding

NetworkError when attempting to fetch resource.

Bitte versuchen Sie es später erneut oder überprüfen Sie Ihre Internetverbindung.

But I am not sure if it is even supposed to actually work, since its "vibe coding" which I guess means the whole project was generated by AI? Obviously I never used or touched any technology like that because I am very old, so I do not know for sure.

[HeyMeco]

@jschae23 solution is public:

https://bahn-vibe.vercel.app/

But it does not work of course because of the 10 million lines of javascript, big suprise:

Fehler bei der Bestpreissuche - Backend not responding
NetworkError when attempting to fetch resource.
Bitte versuchen Sie es später erneut oder überprüfen Sie Ihre Internetverbindung.

But I am not sure if it is even supposed to actually work, since its "vibe coding" which I guess means the whole project was generated by AI? Obviously I never used or touched any technology like that because I am very old, so I do not know for sure.

The issue is just that the API doesn’t respond the datacenter IP‘s. That’s why I asked

[hackgrid]

I tried setting up a Github Pages website for my project, but it seems executing PHP is not supported.
I don't want to host it on my personal server for the public, but you can! You only have to drop one file onto your webspace and it works!

Someday when I ported the PHP to VanillaJS it should work directly from GitHub Pages though, but I do not really need it for my usecase.

Maybe @jschae23 s AI will figure out how to make it work and then we will have a public solution before that?

[jschae23]

The project is functional. However, I encountered an issue where some IP[+] address spaces are blocked by Deutsche Bahn, which prevented me from hosting a public backend. Additionally, CORS issues with the Deutsche Bahn API made it impossible to implement a VanillaJS solution.
If someone can run this service one can connect the Next App to a different backend https://github.com/jschae23/bahn.vibe-backend. Did it myself. This works https://bahn-vibe.vercel.app/.