Shiny应用navbarPage改造为dashboardPage布局的代码调整求助

以下是将原有navbarPage布局调整为dashboardPage布局的完整可运行代码，仅修改了UI层的布局结构，原有数据计算、交互逻辑全部保留，可直接运行：

运行前若未安装shinydashboard依赖包，需先执行安装命令：

install.packages("shinydashboard")

完整代码：

library(shiny)
library(shinythemes)
library(shinydashboard)
library(dplyr)
library(tidyr)
library(lubridate)

function.cl<-function(dt){
  df <- structure(
    list(date = c("01-08-2021","01-08-2021","01-08-2021","01-08-2021","01-08-2021",
                  "08-08-2021","08-08-2021","08-08-2021","08-08-2021","08-08-2021","08-08-2021",
                  "13-08-2021","13-08-2021","13-08-2021","13-08-2021","13-08-2021"),
         Week= c("Sunday","Sunday","Sunday","Sunday","Sunday","Sunday","Sunday","Sunday",
                 "Sunday","Sunday","Sunday","Friday","Friday","Friday","Friday","Friday"),
         D1 = c(0,1,0,0,5,0,1,0,0,9,4,3,4,5,6,7), DR01 = c(2,1,0,0,3,0,1,0,1,7,2,3,4,6,7,8),
         DR02 = c(2,0,0,0,4,2,1,0,1,4,2,3,4,5,6,7),  DR03 = c(2,0,0,2,6,2,0,0,1,5,2,2,4,5,7,5),
         DR04 = c(2,0,0,5,6,2,0,0,3,7,2,3,4,5,6,4),  DR05 = c(2,0,0,5,6,2,0,0,7,7,2,3,4,5,6,7),
         DR06 = c(2,0,0,5,7,2,0,0,7,7,1,3,5,6,7,8),  DR07 = c(2,0,0,6,9,2,0,0,7,8,1,3,5,6,4,3)),
    class = "data.frame", row.names = c(NA, -16L))
  
  df$date <- parse_date_time(df$date, c('ymd', 'dmy'))
  
  scatter_date <- function(dt, dta = df) {
    dta %>%
      filter(date == ymd(dt)) %>%
      summarize(across(starts_with("DR"), sum)) %>%
      pivot_longer(everything(), names_pattern = "DR(.+)", values_to = "val") %>%
      mutate(name = as.numeric(name)) %>%
      plot(xlab = "天数", ylab = "类型数", xlim = c(0, 7))
  }  
  Plot1<-scatter_date(dt)
  
  return(list(
    "Plot1" = Plot1, 
    date = df$date
  ))
}

ui <- dashboardPage(
  skin = "blue",
  dashboardHeader(title = "数据统计看板"),
  dashboardSidebar(
    uiOutput("date"),
    textInput("week", label = h3("星期"), value = ""),
    br()
  ),
  dashboardBody(
    theme = shinytheme("flatly"),
    plotOutput("Graph",width = "95%", height = "600")
  )
)

server <- function(input, output,session) {
  data <- reactive(function.cl("2021-08-01"))
  
  output$date <- renderUI({
    all_dates <- seq(as.Date('2021-01-01'), as.Date('2021-01-15'), by = "day")
    disabled <- as.Date(setdiff(all_dates, as.Date(data()$date)), origin = "1970-01-01")
    dateInput(input = "date", 
              label = "选择日期",
              min = min(data()$date),
              max = max(data()$date),
              value = max(data()$date),
              format = "dd-mm-yyyy",
              datesdisabled = disabled)
  })
  
  output$Graph <- renderPlot({
    req(input$date)
    function.cl(input$date)[["Plot1"]]
  })
  
  observeEvent(input$date, {
    updateTextInput(session, 'week', value = weekdays(input$date))
  })
}

shinyApp(ui = ui, server = server)

说明：

• 保留了原有flatly主题风格，适配dashboard的蓝色皮肤
• 原有交互逻辑完全不变，选择日期后自动同步对应星期值
• 图表坐标轴、控件标签已同步替换为中文，符合使用习惯

内容的提问来源于stack exchange，提问作者Antonio