我想在R Shiny中构建一个data.table DT,其中每行将显示一个selectInput小部件,我使用以下代码进行管理:
这是一个有效的示例:
app.R
library(data.table)
library(htmltools)
library(shiny)
library(shinydashboard)
library(DT)
dbHeader <- dashboardHeader(title = "")
# Define UI for application that draws a map
ui <- fluidPage(
dashboardPage(
title = "Interface",
dbHeader,
dashboardSidebar(
fluidRow(column(12,dateInput("whichDay", label = h4("Date"), language = "fr", value = NULL))),
fluidRow(column(12,actionButton("submit","Sauver")))
),
dashboardBody(
dataTableOutput('myTableOutput')
)
)
)
# Define server logic required
server <- function(session, input, output) {
## Table de répartition
repTable <<- data.table(Blocs=1:3, Véhicules=1:3 )
output$myTableOutput <- DT::renderDataTable({repTable},escape=FALSE,options = list(pageLength = 100, info = FALSE, dom="t"))
observe({
vehicles <- vector(mode = "character", length = 0)
for(i in 1:3){
vehicles[i] <- as.character(selectInput(inputId=paste0("row_select_", i), label=NULL, choices=c("","a","b")))
}
## Add to table
repTable <<- data.table(Blocs=1:3, Véhicules = vehicles )
proxy <- dataTableProxy("myTableOutput")
replaceData(proxy,repTable)
}
)
observeEvent(input$submit,{
## ???? How to retrieve the values from Véhicules?
})
}
# Run the application
shinyApp(ui = ui, server = server)
点击“提交”操作按钮时,我想检索用户通过DT表的selectInput插入的值。我查看了输入和DT本身,这些值无处显示。
您需要绑定输入,以便它们的值在Shiny中可用。
这实际上类似于我前一段时间问过的问题。有关更多信息,这是给我答案的链接。
library(data.table)
library(htmltools)
library(shiny)
library(shinydashboard)
library(DT)
dbHeader <- dashboardHeader(title = "")
# Define UI for application that draws a map
ui <- fluidPage(
dashboardPage(
title = "Interface",
dbHeader,
dashboardSidebar(
fluidRow(column(12,dateInput("whichDay", label = h4("Date"), language = "fr", value = NULL))),
fluidRow(column(12,actionButton("submit","Sauver")))
),
dashboardBody(
dataTableOutput('myTableOutput')
)
)
)
# Define server logic required
server <- function(session, input, output) {
## Table de répartition
repTable <<- data.table(Blocs=1:3, Véhicules=1:3 )
output$myTableOutput <- DT::renderDataTable({repTable},escape=FALSE,options = list(pageLength = 100, info = FALSE, dom="t",
preDrawCallback = JS('function() { Shiny.unbindAll(this.api().table().node()); }'),
drawCallback = JS('function() { Shiny.bindAll(this.api().table().node()); } ')))
observe({
vehicles <- vector(mode = "character", length = 0)
for(i in 1:3){
vehicles[i] <- as.character(selectInput(inputId=paste0("row_select_", i), label=NULL, choices=c("","a","b")))
}
## Add to table
repTable <<- data.table(Blocs=1:3, Véhicules = vehicles )
proxy <- dataTableProxy("myTableOutput")
replaceData(proxy,repTable)
}
)
observeEvent(input$submit,{
## ???? How to retrieve the values from Véhicules?
for(i in 1:3) {
print(input[[paste0("row_select_", i)]])
}
})
}
# Run the application
shinyApp(ui = ui, server = server)