How to use relative path in Interface Asset Rest JSON

mgeyer · July 7, 2021, 9:25am

Hi,
I have a Interface Asset with a REST JSON call, which gives me a list of songs to play. In the JSON is the filename of the mp3-File. I store the mp3-Files locally in [Project-Folder]/Music/

As the project must be portable, how can I reference (with Text-Concatenation) the location of the mp3-File for the audio-player in the trigger?

I tried with “./Music/” + filename, but that does not work.

Thanks for any help (maybe a stupid question?)

Another question: I tried with a global Variable, but I can’t use it in Text-concatenation?

Seb · July 8, 2021, 2:53pm

Hi @mgeyer and welcome to the Intuiface community!

As of today, relative paths within a local REST / JSON Interface Asset are not implemented. I can see a couple of options to handle this situation for you

Host your JSON on a local web server on the device, using a tool like http://fenixwebserver.com/, and host the MP3 files in that folder. The URLs in your JSON could then look like http://localhost:8080/Music/mp3-File1.mp3
Or if you store the files in a fixed location, use a text manipulation converter to concatenate “C:/Folder/Music/” before the actual file name

For further questions and faster answers, I’d recommend you to contact our support team here.

melvyn_br · July 8, 2021, 6:42pm

Did you try referencing them from an excel sheet ?? that way your music goes wherever the XP goes as you mentioned the project must be portable.

mgeyer · July 9, 2021, 6:25am

Thanks for your answer. The concatenation is, what I used. But on the developing device the path is different. So I always have to remember to change that before deploying.

mgeyer · July 9, 2021, 6:26am

The list of music must be administered from a website, so I can’t use excel. But thanks for your answer!

melvyn_br · July 9, 2021, 8:26pm

If the music is administered from a website then the full path excluding the file name should be the same for all, you can use that. Maybe I am missing something. I have done quite some similar stuff and maybe can come up with a solution if you let me know more about your project.

mgeyer · July 12, 2021, 6:26am

Yes, the path is the same for all mp3-Files. But the absolute path on the player is different from the development computer. Maybe I can solve the problem just with an symbolic link.

melvyn_br · July 12, 2021, 7:33am

Cool, in that case I guess you got it solved…