Question

我在一个项目中工作，我必须创建一个闪亮的表单。我目前在UI中有一个数据表，其中包含超链接形式的电子邮件。单击超链接后，将打开模态窗口，其中我有另一个UI，显示要填充的各个字段。我在这里有一个保存按钮，一旦点击按钮，它应该在后端更新我的数据库。

我面临的问题是我无法将每封电子邮件引用到该特定模式窗口，而我的更新查询会更新数据库中的所有记录。有没有办法将所有已经点击的记录细节传递给模态窗口？

我基本上需要知道的是如何更新我点击的记录以及打开弹出窗口的记录？

我正在附加UI.R和server.R以供使用。

enter code here

ui.R

library(shiny)
library(DT)
library(shinyBS)
fluidPage(
         fluidRow(
                  actionButton(inputId = "view",label = "Hi")),
                  #actionButton(inputId =  "savepage1", label = "Save"),
                  DT::dataTableOutput('my_table'),
                  bsModal("FormModal", "My Modal", "",textOutput('mytext'),uiOutput("form1"),
                          actionButton("savepage2","Save"),DT::dataTableOutput("table1"),size = "large")

         )

enter code here

server.R

library(shinyBS)
server <- function(session, input, output){
  
uedata<-c("","Prime","Optimus")  ##add source data here
  
  output$form1<-renderUI({
    tagList(
      column(width=6,selectInput("samplevalue","Select Custom Source*",choices=c("Please select",samplevaluedata))),
      column(width=6,textInput("sampletext",label = "Enter Text",value = NULL,placeholder = NULL)))
  })

  on_click_js = "Shiny.onInputChange('mydata', '%s');
  $('#FormModal').modal('show')"
  
  convert_to_link = function(x) {
    as.character(tags$a(href = "#", onclick = sprintf(on_click_js,x), x))
  }
  
  observeEvent(input$view,{
    session$sendCustomMessage(type = "unbinding_table_elements", "my_table")
    output$my_table <- DT::renderDataTable({
      a=dbGetQuery(hcltcprod,paste0("select name,mobile,email,assignedto from public.tempnew order by 3;"))
      a <- data.frame(a,row.names = NULL)
      a$email <- sapply(a$email,convert_to_link)
      a1 <- datatable(a,
                     escape = F,
                     options = list(paging = FALSE, ordering = FALSE, searching = FALSE, rownames = FALSE,
                                    preDrawCallback = JS('function() { Shiny.unbindAll(this.api().table().node());}'),
                                    drawCallback = JS('function() { Shiny.bindAll(this.api().table().node()); } ')))
                                    
      a1
    })
  })
  
  observeEvent(input$my_table_cell_clicked, {
    print(Sys.time())
  })

  observe({
    if(input$savepage2==0)
      return()
    isolate({
      for(i in 1:nrow(a))
     dbGetQuery(hcltcprod,paste0("update public.tempnew set s_text='",input$samplevalue,"',s_value='",input$sampletext,"' where mobile in ('",a$email,"');"))
    })
  })
  
}

Answer 1

由于您的示例已连接到数据库而您没有提供示例数据，因此我将使用mtcars数据集。基于链接中的示例，您可以使用以下方法查看所选数据：

rm(list = ls())
library(DT)
library(shiny)
library(shinyBS)
library(shinyjs)
library(shinydashboard)

# This function will create the buttons for the datatable, they will be unique
shinyInput <- function(FUN, len, id, ...) {inputs <- character(len)
                                           for (i in seq_len(len)) {
                                             inputs[i] <- as.character(FUN(paste0(id, i), ...))}
                                           inputs
}

ui <- dashboardPage(
  dashboardHeader(title = "Simple App"),
  dashboardSidebar(
    sidebarMenu(id = "tabs",
                menuItem("Menu Item 1", tabName = "one", icon = icon("dashboard"))
    )
  ),
  dashboardBody(
    tabItems(
      tabItem(tabName = "one",h2("Datatable Modal Popup"),
              DT::dataTableOutput('my_table'),uiOutput("popup")
      )
    )
  )
)

server <- function(input, output, session) {
  my_data <- reactive({
    testdata <- mtcars
    as.data.frame(cbind(View = shinyInput(actionButton, nrow(testdata),'button_', label = "View", onclick = 'Shiny.onInputChange(\"select_button\",  this.id)' ),testdata))
  })  
  output$my_table <- DT::renderDataTable(my_data(),selection = 'single',options = list(searching = FALSE,pageLength = 10),server = FALSE, escape = FALSE,rownames= FALSE)

  # Here I created a reactive to save which row was clicked which can be stored for further analysis
  SelectedRow <- eventReactive(input$select_button,{
    as.numeric(strsplit(input$select_button, "_")[[1]][2])
  })

  # This is needed so that the button is clicked once for modal to show, a bug reported here
  # https://github.com/ebailey78/shinyBS/issues/57
  observeEvent(input$select_button, {
    toggleModal(session, "modalExample", "open")
  })

  DataRow <- eventReactive(input$select_button,{
    my_data()[SelectedRow(),2:ncol(my_data())]
  })

  output$popup <- renderUI({
    bsModal("modalExample", paste0("Data for Row Number: ",SelectedRow()), "", size = "large",
            column(12,                   
                   DT::renderDataTable(DataRow())

            )
    )
  })

}

shinyApp(ui, server)

Android Activity Lifecycle

R shinyBS弹出窗口

1 个答案: