Unexpected value of session$clientData$url_search

[ocelhay]

System details:

Positron and OS details:

Positron Version: 2024.11.0 (Universal) build 140
Code - OSS Version: 1.93.0
Commit: e0d844b
Date: 2024-10-31T14:24:19.540Z
Electron: 30.4.0
Chromium: 124.0.6367.243
Node.js: 20.15.1
V8: 12.4.254.20-electron.0
OS: Darwin arm64 24.1.0

Interpreter details:

R 4.3.2

Describe the issue:

Shiny app session$clientData$url_search value in Positron differs from the expected value ("") in RStudio

session$clientData$url_search
[1] "?_positronRender%3D3"

Steps to reproduce the issue:

1. run a shiny app from within Positron
2. add in server.R (print(session$clientData$url_search))

[juliasilge]

For folks on our team less familiar with Shiny, here is some context on the session object:
https://shiny.posit.co/r/articles/build/client-data/

@ocelhay can you share how you use the value "" in your development process?

[ocelhay]

@ocelhay can you share how you use the value "" in your development process?

Within the app, I use the statement session$clientData$url_search == "" to test if there is any session parameter. No session parameter will branch logic with the app going into "demo mode". When running my shiny app locally, typically, it has to go into "demo mode".
It's not critical as I can as well test for the presence of a specific parameter.
I just wanted to report that this logic that was working in RStudio is failing in Positron.