Passing data to perspective app from extrernal source

Ignition
,
1

There is an existing standalone python application that launches a Vision client instance of an application and passes some data via a couple csv files. (the standalone application will get ported to Ignition eventually but isnt a priority right now)

The issue arises when trying to port said Vision application to perspective. Since browsers cannot acces local file systems this method of passing data isnt viable. I could pass the data via the page link but that is less than ideal. Any suggestions?

I am thinking of using the WebDev module to create an API endpoint with the doPost method but dont know how I would make sure the data gets to the right session (since there are going to be upwards of 20 active sessions at a time)

2

Maybe the file upload component could be what you're looking for ?

https://docs.inductiveautomation.com/display/DOC81/Perspective+-+File+Upload

2 Likes
3

Thanks for the suggestion, but that would require the user to manually select the file they want to upload. I want to read the files during application startup without user input.

4

This data is user specific? Could it be stored in a database instead?

5

Not gonna happen. A browser automatically accessing and reading files on the client's machine ? Imagine what that implies.

Anyway, I'd say relying on the user having a specific file with the right name at the right path is probably not the best idea.
Mandatory upload at startup might be a solution ?

Otherwise, we'll need to know more about what the whole thing is about to be able to suggest proper alternatives.

3 Likes
6

Sounds like you cannot port this application. Consider deferring the Perspective port for a couple years and see what is possible.