假设我的shiny 应用程序中有一个现有的zip文件(out.zip
)(即位于服务器上).我想让用户能够下载这个文件.这个问题非常类似于this one.然而,这个问题在downloadHandler
中压缩文件,而在我的例子中zip文件已经存在.
library(shiny)
app <- list(
ui = fluidPage(
titlePanel(""),
sidebarLayout(
sidebarPanel(
downloadButton("downloadData", label = "Download")
),
mainPanel(h6("Sample download", align = "center"))
)
),
server = function(input, output) {
output$downloadData <- downloadHandler(
filename <- function() {
paste("output", "zip", sep=".")
},
content <- function(file) {
# not sure what to put here???
},
contentType = "application/zip"
)
}
)
shiny::runApp(app)