extendShinyjs cannot find path in docker image can't find the

[gadepallivs]

I am calling a custom js file using the extendShinyjs. function. The following is the snippet of the app and it works perfectly on the windows desktop. I wrapped the app in a docker image and as I launch the app to test using the command below
`sudo docker run -p 9000:9000 example_app R -e 'shiny::runApp("app.R")'
All the packages load and I get

`here starts /`
and shinyjs: error cannot find "//www/custom_script.js" file. 

library(shiny)
library(shinyjs)
library(here)
shiny::shinyApp(
  ui = shiny::fluidPage(
 shinyjs::useShinyjs(),
    tags$head(
        shinyjs::extendShinyjs(script = here::here("www", "custom_script.js")),
    ),
 shiny::selectInput(
      "region", "Region: ",
      c("The Americas", "Europe", "Middle East")
    ),
),  server = function(input, output, session) {
    shiny::observeEvent(input$region, {
      js$filterSingleValue("Region", input$region)
    })
  }
)

Is it something related to the way I am calling or docker requires some additional input ? I am using rocker/shiny image with libv8 installed

[daattali]

Hmm that's definitely a bug. And I think I have a good idea of why that's happening. When I check for the file I'm only looking at the absolute path, and not taking into account the resourch paths (that are added with addResourcePath()).

That being said, I don't recommend using here::here for shiny resources, that function is great for interactive scripts, but for shiny I'd suggest being more explicit about where files live

[earnaud]

Hi,
writing in this issue since it seems to be related: I am also using a docker container to deploy a shiny app (see my MetaShARK* repos if interested in details) and some {shinjs} features such as onclick() do not work. My dev and deploy environments are slightly different (Ubuntu 19.04 in dev and 18.04 on server).

[daattali]

If you're able to provide a full reproducible example, it would make it easier for me to test/debug

[earnaud]

I won't have time soon to work on such a reprex BUT as I think this could help you, I will try as soon as possible. I think it will be a dockerized app ready to deploy. Anyway, thanks for replying :)

[daattali]

Don't worry, this sounds like a complex issue so I don't know when I'll find the time to look into it too :)

[daattali]

@gadepallivs and @earnaud : the latest version of shinyjs (not yet on CRAN, but on github) should hopefully fix this. I had to make a BREAKING CHANGE to support this, but this was a change that had to be done. Now the javascript files are being loaded the same way that any other web resource in shiny is loaded.