How to do autofill of data in shiny app using excel file

问题

I am trying to read a data set using the browse option to upload data from pc. After that, I want to display file content to be automatically filled by using first column entry.

library(shiny)
library(shinydashboard)




ui<-(fluidPage(
  titlePanel("Auto Fill"),
  sidebarPanel(
autoFillDF<-  fileInput('file1', 'Choose xlsx file',
          accept = c(".xlsx")),
  # actionButton("go", "update"),
 selectizeInput("p1", choices = autoFillDF$WorklistNo, selected = NULL, label = 'WorklistNo'),
 selectizeInput("p2", choices = NULL, label = 'Status'),
 selectizeInput("p3", choices = NULL, label = 'Plant'),

 ),
  mainPanel(
    DT::dataTableOutput('table')
  )
)
)

server<-(function(input, output, session) {

  updateApp <- reactive({
    data <- autoFillDF
    data <- data[data$WorklistNo %in% input$p1,]
    updateSelectizeInput(session, 'p2', choices = data$Status, selected = data$Status, server = TRUE)
    updateSelectizeInput(session, 'p3', choices = data$Plant, selected = data$Plant, server = TRUE)

    data
  })

  shinyApp(ui = ui, server = server)

  output$table <- DT::renderDataTable(
    DT::datatable(updateApp()) 
  )

})
shinyApp(ui = ui, server = server)

This is my data set look like. I have to read all the column data. I want to put WorklistNo and rest should be autofill.

Thanks in advance.

回答1:

I have tried to understand your code and requirement and as per my understanding i have tried to build a simple solution to complete it...Please take a look on that..

library(shiny)
library(shinydashboard)

ui <- dashboardPage(
  dashboardHeader(title = "Basic dashboard"),
  dashboardSidebar(),
  dashboardBody(
    fluidRow(
      fileInput("file_upload","Uplaod Data",buttonLabel = "Browse..",placeholder = "No file Selected")
    ),
    fluidRow(
      column(3,
             uiOutput("p1_ui")
             ),
      column(3,
             uiOutput("p2_ui")
             ),
      column(3,
             uiOutput("p3_ui")
             )
        ),
    fluidRow(
      column(6,
             h3("Uploaded DATA"),
             DTOutput("uploaded_data_table")
             ),
      column(6,
             h3("Selected DATA"),
             DTOutput("selected_data_table")
             )
    )
  )
)

server <- function(input, output,session) {
  values <- reactiveValues(
    upload_state = NULL
  )
  data_upload_fun<-eventReactive(input$file_upload,{
    req(input$file_upload)
    if(values$upload_state=='reset'||is.null(values$upload_state))
    {
      df<<-read.csv(input$file_upload$datapath,
                   header = TRUE)
      values$upload_state <- 'uploaded'
      df
    }  
  })
    output$uploaded_data_table <- renderDT({
    DT::datatable(data_upload_fun())
  })
  output$p1_ui<-renderUI({
    if(is.null(values$upload_state)|| values$upload_state=='reset')
    {
      selectInput("p1", choices = NULL, label = 'WLID')
    }
    else
    {
      data_upload_fun()
      selectInput("p1", choices = df$WLID, label = 'WLID')
    }
  })

  output$p2_ui<-renderUI({
    if(is.null(values$upload_state)|| values$upload_state=='reset')
    {
      selectInput("p2", choices = NULL, label = 'PLANT')
    }
    else
    {
      data_upload_fun()
      plant<-df[df$WLID==input$p1,2]
      selectInput("p2", choices = as.list(plant), label = 'PLANT')
    }
  })
  output$p3_ui<-renderUI({
    if(is.null(values$upload_state)|| values$upload_state=='reset')
    {
      selectInput("p3", choices = NULL, label = 'STATUS')
    }
    else
    {
      data_upload_fun()
      status<-df[df$WLID==input$p1 & df$PLANT==input$p2,3]
      selectInput("p3", choices = as.list(status), label = 'STATUS')
    }
  })

  output$selected_data_table<-renderDT({
    if(is.null(values$upload_state)|| values$upload_state=='reset')
    {
      returnValue()
    }
    else
    {
      data_upload_fun()
      data_to_show<-df[df$WLID==input$p1 & df$PLANT==input$p2 & df$STATUS== input$p3, ]
      DT::datatable(data_to_show)
    }
  })

}

shinyApp(ui, server)

UI LOOKS LIKE:

DATA Looks like

Please let me know if that works and anything to change...

来源：https://stackoverflow.com/questions/56863566/how-to-do-autofill-of-data-in-shiny-app-using-excel-file