checkboxGroupInput 在 shiny 應用程序中隱藏或刪除表 output

Question

我正在創建一個 shiny 應用程序，其復選框組中的選擇在單擊操作按鈕后返回一個包含過濾數據的表格，如下例所示。 我的問題是如何在生成表格后包含該功能，當我再次單擊任何復選框時，表格將被隱藏或刪除，直到用戶再次單擊操作按鈕。

library(shiny)
library(DT)
library(dplyr)

ui <- fluidPage(

      checkboxGroupInput(inputId = "checkboxGroup1", label = "checkboxGroup1", choices = list(5.0, 4.6)),
      checkboxGroupInput(inputId = "checkboxGroup2", label = "checkboxGroup2", choices = list(3.4, 3.6)),
      checkboxGroupInput(inputId = "checkboxGroup3", label = "checkboxGroup3", choices = list(0.2, 1.5)),
      checkboxGroupInput(inputId = "checkboxGroup4", label = "checkboxGroup4", choices = list("setosa", "virginica")),
      actionButton('action',label = 'action'),

      mainPanel(
          dataTableOutput("table1")
        )
    )


# Define server logic required to draw a histogram
server <- function(input, output) {
  
  filter_data <- eventReactive(input$action, {
    
    data <- iris
    
    data %>% 
      {if (is.null(input$checkboxGroup1) == FALSE) filter(., Sepal.Length %in% input$checkboxGroup1) else .} %>% 
      {if (is.null(input$checkboxGroup2) == FALSE) filter(., Sepal.Width %in% input$checkboxGroup2) else .} %>% 
      {if (is.null(input$checkboxGroup3) == FALSE) filter(., Petal.Width %in% input$checkboxGroup3) else .} %>%
      {if (is.null(input$checkboxGroup4) == FALSE) filter(., Species %in% input$checkboxGroup4) else .}

  })
  
  output$table1 <- renderDataTable(
    filter_data()
  )
  
}

# Run the application 
shinyApp(ui = ui, server = server)

Answer 1

這是一個使用shinyjs的選項。 首先創建一個依賴於所有復選框輸入的反應式表達式。 我們可以在選擇復選框時使用shinyjs::hide DT。 然后使用shinyjs::show在單擊操作按鈕時顯示表格。

帶有更新的基本 UI 的演示

library(shiny)
library(DT)
library(dplyr)
library(shinyjs)

ui <- fluidPage(
    useShinyjs(), # include shinyjs here
    checkboxGroupInput(inputId = "checkboxGroup1", label = "checkboxGroup1", choices = list(5.0, 4.6)),
    checkboxGroupInput(inputId = "checkboxGroup2", label = "checkboxGroup2", choices = list(3.4, 3.6)),
    checkboxGroupInput(inputId = "checkboxGroup3", label = "checkboxGroup3", choices = list(0.2, 1.5)),
    checkboxGroupInput(inputId = "checkboxGroup4", label = "checkboxGroup4", choices = list("setosa", "virginica")),
    actionButton('action',label = 'action'),

    mainPanel(
        dataTableOutput("table1")
      )
)

# Define server logic required to draw a histogram
server <- function(input, output) {
  
  filter_data <- eventReactive(input$action, {
    data <- iris
    data %>% 
      {if (is.null(input$checkboxGroup1) == FALSE) filter(., Sepal.Length %in% input$checkboxGroup1) else .} %>% 
      {if (is.null(input$checkboxGroup2) == FALSE) filter(., Sepal.Width %in% input$checkboxGroup2) else .} %>% 
      {if (is.null(input$checkboxGroup3) == FALSE) filter(., Petal.Width %in% input$checkboxGroup3) else .} %>%
      {if (is.null(input$checkboxGroup4) == FALSE) filter(., Species %in% input$checkboxGroup4) else .}
  })
  
  obs_checkboxes = reactive({
    list(input$checkboxGroup1,input$checkboxGroup2,input$checkboxGroup3,input$checkboxGroup4)
  })

  observeEvent(obs_checkboxes(), {
    hide("table1")
  })
  
  observeEvent(input$action, {
    show("table1")
  })
  
  output$table1 <- renderDataTable(
    filter_data()
  )
}

# Run the application 
shinyApp(ui = ui, server = server)