[英]downloadButton causing other Shiny elements to disappear
I have some simple R Shiny code as below in a file named app.R
. 我在名为
app.R
的文件中有一些简单的R Shiny代码,如下所示。 When I run this code, daterange6
and daterange12
do not appear. 当我运行此代码时,
daterange6
和daterange12
不会出现。 But if I comment one of the downloadButton
lines in ui
then both daterange6
and daterange12
appear just fine. 但是,如果我在
ui
注释了downloadButton
行之一,则daterange6
和daterange12
都很好。 Why is that? 这是为什么?
library(shiny)
library(shinydashboard)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sidebarMenu(
menuItem('6 Month', tabName='6M'),
menuItem('12 Month', tabName='12M')
)
),
dashboardBody(
tabItems(
tabItem(tabName='6M',
h1("6 Month"),
sidebarLayout(
sidebarPanel(width=3, fixed=T,
downloadButton('downloadData6', 'Download Data'),
uiOutput('daterange6')
),
mainPanel()
)
),
tabItem(tabName='12M',
h1("12 Month"),
sidebarLayout(
sidebarPanel(width=3, fixed=T,
downloadButton('downloadData6', 'Download Data'),
uiOutput('daterange12')
),
mainPanel()
)
)
)
)
)
server <- function(input, output, session) {
output$daterange6 <- renderUI({
dateRangeInput(inputId='daterange6',
label='Select Period',
min="2002-01-01", max="2010-01-01",
start = "2002-01-01", end = "2009-01-01",
startview='year'
)
})
output$daterange12 <- renderUI({
dateRangeInput(inputId='daterange12',
label='Select Period',
min="2002-01-01", max="2010-01-01",
start = "2002-02-01", end = "2009-12-01",
startview='year'
)
})
}
shinyApp(ui, server)
It seems that your problem is related to the Ids. 看来您的问题与ID有关。 You have the same id for both
downloadButton
, just change the name. 两个
downloadButton
ID相同,只需更改名称即可。
Always try to have a unique id for each element to avoid this kind of unexpected behavior, unless you can make sure that two elements with the same id will not be rendered at the same time. 除非您可以确保不会同时呈现两个具有相同id的元素,否则请始终尝试为每个元素使用唯一的id以避免这种意外行为。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.