updateOrderInput does not work with named vector or named list

[Lennart Tuijnder]

Bug description

When updating the items argument of a shinyjqui::orderInput widget via updateOrderInput, unexpected results occur when the updated items is a named vector or named list.

1. The following message is printed in console:
   Input to asJSON(keep_vec_names=TRUE) is a named vector. In a future version of jsonlite, this option will not be supported, and named vectors will be translated into arrays instead of objects. If you want JSON object output, please use a named list instead. See ?toJSON.
2. Only the first vector/list item is shown in the widget on the browser.
3. The value returned by input$inputID = "[object Object]" (screenshot taken from app example below)
   

Minimal example:

library(shiny)
library(shinyjqui)

## Uncomment the one you want to use
#toUpdate <- month.abb[1:6]                                     # Normal vector works fine
#toUpdate <- stats::setNames(1:6, nm = month.abb[1:6])          # Named vector does not work
#toUpdate <- as.list(stats::setNames(1:6, nm = month.abb[1:6])) # Named list does not work
#toUpdate <- factor(month.abb[1:6])                             # Factor works.

ui <- fluidPage(
  orderInput("foo", "label",
    items =  NULL,
    item_class = 'default'),
  verbatimTextOutput("order"),
  actionButton("update", "update")
)

server <- function(input, output, session) {
  output$order <- renderPrint({input$foo})
	
  observeEvent(input$update, {
      updateOrderInput(
        session, "foo",
        items = toUpdate
      )
    })
}

shinyApp(ui, server)

---

The specifying a named vector or list in orderInput seems to be no problem.

Extra sessionInfo:
> sessionInfo()
R version 3.6.3 (2020-02-29)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 20.04.3 LTS

Matrix products: default
BLAS:   /usr/lib/x86_64-linux-gnu/blas/libblas.so.3.9.0
LAPACK: /usr/lib/x86_64-linux-gnu/lapack/liblapack.so.3.9.0

locale:
 [1] LC_CTYPE=en_US.UTF-8          LC_NUMERIC=C                 
 [3] LC_TIME=de_BE.UTF-8           LC_COLLATE=en_US.UTF-8       
 [5] LC_MONETARY=de_BE.UTF-8       LC_MESSAGES=en_US.UTF-8      
 [7] LC_PAPER=de_BE.UTF-8          LC_NAME=de_BE.UTF-8          
 [9] LC_ADDRESS=de_BE.UTF-8        LC_TELEPHONE=de_BE.UTF-8     
[11] LC_MEASUREMENT=de_BE.UTF-8    LC_IDENTIFICATION=de_BE.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] shinyjqui_0.4.0 shiny_1.7.1     rj_4.0.5-4     

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.7        xml2_1.3.2        magrittr_2.0.1    rj.gd_4.0.5-1    
 [5] xtable_1.8-4      R6_2.5.1          rlang_0.4.12      fastmap_1.1.0    
 [9] tools_3.6.3       jquerylib_0.1.4   htmltools_0.5.2   ellipsis_0.3.2   
[13] digest_0.6.28     lifecycle_1.0.1   crane_0.0.3       later_1.3.0      
[17] sass_0.4.0        htmlwidgets_1.5.4 promises_1.2.0.1  curl_4.3.2       
[21] cachem_1.0.6      mime_0.12         compiler_3.6.3    bslib_0.3.1      
[25] jsonlite_1.7.2    httpuv_1.6.3     

[Yang Tang]

Hi @ltuijnder Thanks for identifying the issue. The named vector should now work in orderInput()

[Lennart Tuijnder]

Hi @Yang-Tang, I can confirm that the bug has been fixed in the latest release 0.4.1..

Thank you for your work!