Re: [R] shinyFiles update shinySaveButton filename varaible from server

[Bert Gunter]

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Bert Gunter

"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Thu, Jun 3, 2021 at 11:00 PM nevil amos  wrote:

> Is it possible to update the filename variable  the shinySaveButton from
> the server?
>
> I want to provide a default  filename based on a series of choices that the
> user has made in the app ( here I have just made a random string to serve
> the purpose.  how do I feed output$defaultname
>  so that shinySaveButton( filename = outputSdefaultname )?
>
>
> library(shiny)
> library(shinyFiles)
>
> data <- iris
> roots <- c("UserFolder"=".")
>
> ui <- fluidPage(
>   actionButton("makeName","Make Default File Name"),
>   shinySaveButton(id = "save", label = "Save file", title = "Save file as
> ...", filename = "defaultname",filetype=list(csv="csv"))
> )
>
>
> server <- shinyServer(function(input, output, session) {
>   rv <- reactiveValues()
>   observeEvent(input$makeName,{
> output$defaultname<-paste(letters[sample(1:10,5)],collapse="")
>   })
>
>   observe({
>
>
> shinyFileSave(input, "save", roots=roots, session=session)
> fileinfo <- parseSavePath(roots, input$save)
> xx<<-input$save
> if (nrow(fileinfo) > 0) {
>   write.csv(, as.character(fileinfo$datapath))
>
> }
> session$allowReconnect("force")
>   })
> })
>
> runApp(list(
>   ui=ui,
>   server=server
> ))
>
> [[alternative HTML version deleted]]
>
> __
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> and provide commented, minimal, self-contained, reproducible code.
>

[[alternative HTML version deleted]]

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[R] shinyFiles update shinySaveButton filename varaible from server

[nevil amos]

Is it possible to update the filename variable  the shinySaveButton from
the server?

I want to provide a default  filename based on a series of choices that the
user has made in the app ( here I have just made a random string to serve
the purpose.  how do I feed output$defaultname
 so that shinySaveButton( filename = outputSdefaultname )?


library(shiny)
library(shinyFiles)

data <- iris
roots <- c("UserFolder"=".")

ui <- fluidPage(
  actionButton("makeName","Make Default File Name"),
  shinySaveButton(id = "save", label = "Save file", title = "Save file as
...", filename = "defaultname",filetype=list(csv="csv"))
)


server <- shinyServer(function(input, output, session) {
  rv <- reactiveValues()
  observeEvent(input$makeName,{
output$defaultname<-paste(letters[sample(1:10,5)],collapse="")
  })

  observe({


shinyFileSave(input, "save", roots=roots, session=session)
fileinfo <- parseSavePath(roots, input$save)
xx<<-input$save
if (nrow(fileinfo) > 0) {
  write.csv(, as.character(fileinfo$datapath))

}
session$allowReconnect("force")
  })
})

runApp(list(
  ui=ui,
  server=server
))

[[alternative HTML version deleted]]

__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.