我试图从Shiny的反应式书签上下文中排除ShinyJS延迟。我看到 URL 中的延迟 ID 是自动生成的并且总是不同的:delay-ad190e10123bd97f960fed7a8a9e6fde=3000。
我试图通过正则表达式排除延迟,但是我不相信正在解析正则表达式:
setBookmarkExclude(
c("delay-[[:alnum:]]"))
我想要一种方法来设置延迟的 ID,以便每次都相同,或者正则表达式 setBookmarkExclude 以排除随机生成的延迟 ID
请参阅以下示例:
library(shiny)
library(shinyjs)
ui <- function(request) {
fluidPage(
useShinyjs(),
br(),
bookmarkButton(id="bookmarkBtn"),
hr(),
textOutput("ExcludedIDsOut"),
hr(),
sliderInput(inputId="slider", label="My value will be bookmarked", min=0, max=10, value=5),
textOutput("out_1"),
textOutput("out_2"),
textOutput("out_3")
)
}
server <- function(input, output, session) {
observeEvent(input$bookmarkBtn, {
session$doBookmark()
})
ExcludedIDs <- reactiveVal(value = NULL)
observe({
toExclude <- "bookmarkBtn"
delayExclude <- grep("delay", names(input), value = TRUE)
if(length(delayExclude) > 0){
toExclude <- c(toExclude, delayExclude)
}
setBookmarkExclude(toExclude)
ExcludedIDs(toExclude)
})
output$ExcludedIDsOut <- renderText({
paste("ExcludedIDs:", paste(ExcludedIDs(), collapse = ", "))
})
delay(1000, {
output$out_1 <- renderText({
"My"
})
})
delay(2000, {
output$out_2 <- renderText({
"delayed"
})
})
delay(3000, {
output$out_3 <- renderText({
"output"
})
})
}
enableBookmarking(store = "url") # store = "server"
shinyApp(ui, server)
更新:白名单方法
library(shiny)
library(shinyjs)
ui <- function(request) {
fluidPage(
useShinyjs(),
br(),
bookmarkButton(id="bookmarkBtn"),
hr(),
textOutput("ExcludedIDsOut"),
hr(),
sliderInput(inputId="slider", label="My value will be bookmarked", min=0, max=10, value=5),
textOutput("out_1"),
textOutput("out_2"),
textOutput("out_3")
)
}
server <- function(input, output, session) {
bookmarkingWhitelist <- c("slider")
observeEvent(input$bookmarkBtn, {
session$doBookmark()
})
ExcludedIDs <- reactive({
toExclude <- setdiff(names(input), bookmarkingWhitelist)
setBookmarkExclude(toExclude)
toExclude
})
output$ExcludedIDsOut <- renderText({
paste("ExcludedIDs:", paste(ExcludedIDs(), collapse = ", "))
})
delay(1000, {
output$out_1 <- renderText({
"My"
})
})
delay(2000, {
output$out_2 <- renderText({
"delayed"
})
})
delay(3000, {
output$out_3 <- renderText({
"output"
})
})
}
enableBookmarking(store = "url") # store = "server"
shinyApp(ui, server)
这是一个相关的 GitHub 问题,请注意session$getBookmarkExclude()
作为跟踪排除输入的替代方法。