flexdashboard/Shiny 中的简单刷新按钮？ R

Question

我有一个 google form/survey 将响应保存到 google sheet.

来自 google sheet 的数据正在进入我的 flexdashboard/shiny 应用程序，但如果有人在使用该应用程序时保存了响应 - 查看响应的唯一方法是实际上在浏览器中点击刷新。

我想添加一个无需用户单击刷新即可重新运行应用程序的按钮吗？这可能吗？

这是我编写的一些代码 - 我将一些代码放在一起但似乎不起作用。

---
title: "Test "
output: 
  flexdashboard::flex_dashboard:
    orientation: columns
    vertical_layout: fill
    runtime: shiny
---

```{r setup, include=FALSE}
library(flexdashboard)
library(shiny)
library(DT)
library(gsheet)
```



Inputs {.sidebar data-width=300}
-----------------------------------------------------------------------

```{r}

jscode <- "shinyjs.refresh = function() { history.go(0); }"


actionButton(jscode, "Refresh")

observeEvent(input$reset, {

})

```

Column
-------------------------------------


### Chart A

```{r}

data <- gsheet2tbl('https://docs.google.com/spreadsheets/d/1CB2IQHb3g5d8KsEr-_lJNXPKnTBn2nhz_-AzBjRyRK4/edit#gid=0')

datatable(data
  ,
          editable = TRUE,
  options = list(
    columnDefs = list(list(className = 'dt-center', targets = "_all")))
)
```

Answer 1

如果不喜欢重置按钮，我们可以使用 invalidateLater(10000) 每 10 秒获取一次数据。

应用程序：

library(shiny)
library(shinyjs)
library(DT)
library(gsheet)

ui <- fluidPage(
  useShinyjs(),
  actionButton("reset", inputId = "Refresh"),
  DTOutput("table")
)

server <- function(input, output, session) {
  observeEvent(input$Refresh, {
    refresh()
  })

  data <- reactive({
    #invalidateLater(10000)
    gsheet2tbl("https://docs.google.com/spreadsheets/d/1CB2IQHb3g5d8KsEr-_lJNXPKnTBn2nhz_-AzBjRyRK4/edit#gid=0")
  })

  output$table <- renderDataTable({
    datatable(data(),
      editable = TRUE,
      options = list(
        columnDefs = list(list(className = "dt-center", targets = "_all"))
      )
    )
  })
}

shinyApp(ui, server)

第三种选择是在按下按钮时直接重新呈现数据：

代码：

library(shiny)
library(shinyjs)
library(DT)
library(gsheet)

data <- gsheet2tbl("https://docs.google.com/spreadsheets/d/1CB2IQHb3g5d8KsEr-_lJNXPKnTBn2nhz_-AzBjRyRK4/edit#gid=0")

ui <- fluidPage(
  useShinyjs(),
  actionButton("reset", inputId = "Refresh"),
  DTOutput("table")
)

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


   observeEvent(input$Refresh, {
    
    df <- gsheet2tbl("https://docs.google.com/spreadsheets/d/1CB2IQHb3g5d8KsEr-_lJNXPKnTBn2nhz_-AzBjRyRK4/edit#gid=0")
    
    output$table <- renderDT({
    datatable(df,
              editable = TRUE,
              options = list(
                  columnDefs = list(list(className = "dt-center", targets = "_all"))
              )
    )})
    
  })
  
  #this will render once at the start of the app
  output$table <- renderDataTable({
    
    datatable(data,
      editable = TRUE,
      options = list(
        columnDefs = list(list(className = "dt-center", targets = "_all"))
      )
    )
  })
}

shinyApp(ui, server)

flexdashboard/Shiny 中的简单刷新按钮？ R

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