我想让我的rhandsontable只在单击动作按钮“冻结预测”时阅读,并在单击“编辑预测”时激活该表。它应该显示在单击“生成预测”按钮上的求和输出。
请帮助纠正我的现有代码按照上述条件。
UI.R
packages <- c( "shiny", "data.table", "devtools", "shinysky","googleVis","scales","rhandsontable" )
lapply( packages, require, character.only = TRUE )
jsResetCode <- "shinyjs.reset = function() {history.go(0)}" #JS Code to refresh the App
did_recalc <- FALSE
ui <- fluidPage(
# Application title
titlePanel("Scenario Planner Test App"),
br(),br(),
actionButton("recalc", "Generate Forecast"),
actionButton("edit", "Edit Forecast"),
actionButton("freeze", "Freeze Forecast"),br(),br(),
rHandsontableOutput('table'),br(),br(),
textOutput('restitle'),
textOutput('result')
)Server.R
Sys.setenv(R_ZIPCMD="/usr/bin/zip")
packages <- c( "shiny", "data.table", "devtools", "shinysky","googleVis","scales","reshape2" )
lapply( packages, require, character.only = TRUE )
disableActionButton <- function(id,session) {
session$sendCustomMessage(type="jsCode1",
list(code= paste("$('#",id,"').prop('disabled',true)"
,sep="")))
}
enableActionButton <- function(id,session) {
session$sendCustomMessage(type="jsCode2",
list(code= paste("$('#",id,"').prop('disabled',false)"
,sep="")))
}
shiny::shinyServer( function(input,output,session)({
values <- reactiveValues(data=as.data.frame(runif(2)))
observe({
input$recalc
values$data <- as.data.frame(runif(2))
})
observe({
if(!is.null(input$table))
values$data <- hot_to_r(input$table)
})
output$table <- renderRHandsontable({
rhandsontable(values$data)
})
observe({
input$freeze
print("freeze")
##if(!is.null(input$table))
print("2freeze")
rhandsontable(values$data) %>%
hot_table(readOnly = TRUE)
})
output$restitle <- renderText({
"Sum Output"
})
output$result <- renderText({
sum(values$data)
})
})
)发布于 2016-12-29 12:16:55
我要用它来工作
readonly的反应性变量observerEvent例程添加到edit和freeze操作按钮以切换readonly。output$table命令以使用反应性readonly变量。如果您只是使用一个复选框来指示表是可编辑的,然后将该变量连接到readOnly参数,但有时您需要这样做,那么它会更容易,而不需要很多这样的元素,所以我这样解决了它。
完整的服务器.R代码如下所示:
packages <- c("shiny","data.table","devtools","shinysky","googleVis","scales","reshape2")
lapply(packages,require,character.only = TRUE)
disableActionButton <- function(id,session) {
session$sendCustomMessage(type = "jsCode1",
list(code = paste("$('#",id,"').prop('disabled',true)"
,sep = "")))
}
enableActionButton <- function(id,session) {
session$sendCustomMessage(type = "jsCode2",
list(code = paste("$('#",id,"').prop('disabled',false)"
,sep = "")))
}
shiny::shinyServer(function(input,output,session)({
values <- reactiveValues(data = as.data.frame(runif(2)),readonly=FALSE)
observe({
input$recalc
values$data <- as.data.frame(runif(2))
})
observe({
if (!is.null(input$table))
values$data <- hot_to_r(input$table)
})
output$table <- renderRHandsontable({
rhandsontable(values$data,readOnly=values$readonly)
})
observeEvent(input$edit, {
values$readonly <- FALSE
})
observeEvent(input$freeze,{
values$readonly <- TRUE
})
output$restitle <- renderText({
"Sum Output"
})
output$result <- renderText({
sum(values$data)
})
})
)看起来是这样的:

https://stackoverflow.com/questions/41341635
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