R Shiny DateRange 仅输入月份年份

Question

有没有办法在 Shiny 中破解或创建一个dateRangeInput()选择器，以便它只选择月份-年份（没有一天），或者它自动选择所选月份的第一天而不显示日期选择？ 或者我应该创建另一个月份日期选择器（滑块、选择框...）

dateRangeInput('dateRange',label = "Pédiode d'analyse : ",format = "mm/yyyy",language="fr",
    start = Sys.Date() %m-% months(12), end=Sys.Date(),startview = "year",separator = " - ")

我想要的是在选择日期时删除这一步： dateRangeInput

Answer 1

看看下面这个自定义函数monthStart ，它可以用来强制日期为该月和年的第一个日期

示例 1，显示给定月份的第一天。 如果您想在应用程序中稍后使用日期对象，这可能很有用，因此它始终指向给定月份和年份的第一天

#rm(list=ls())
library(shiny)

monthStart <- function(x) {
  x <- as.POSIXlt(x)
  x$mday <- 1
  as.Date(x)
}

ui <- basicPage(dateRangeInput('dateRange',label = "Pédiode d'analyse : ",format = "mm/yyyy",language="fr",start = Sys.Date(), end=Sys.Date(),startview = "year",separator = " - "),
                textOutput("SliderText")
)
server <- shinyServer(function(input, output, session){

  Dates <- reactiveValues()
  observe({
    Dates$SelectedDates <- c(as.character(monthStart(input$dateRange[1])),as.character(monthStart(input$dateRange[2])))
  })
  output$SliderText <- renderText({Dates$SelectedDates})
})
shinyApp(ui = ui, server = server)

示例 2，仅显示月份和年份

#rm(list=ls())
library(shiny)

monthStart <- function(x) {
  x <- as.POSIXlt(x)
  x$mday <- 1
  as.Date(x)
}

ui <- basicPage(dateRangeInput('dateRange',label = "Pédiode d'analyse : ",format = "mm/yyyy",language="fr",start = Sys.Date(), end=Sys.Date(),startview = "year",separator = " - "),
                textOutput("SliderText")
)
server <- shinyServer(function(input, output, session){

  Dates <- reactiveValues()
  observe({
    Dates$SelectedDates <- c(as.character(format(input$dateRange[1],format = "%m/%Y")),as.character(format(input$dateRange[2],format = "%m/%Y")))
  })
  output$SliderText <- renderText({Dates$SelectedDates})
})
shinyApp(ui = ui, server = server)

Answer 2

我刚刚使用airDatePicker()来做到这一点。 您可以将弹出日历的最小视图编辑为“月”，并将日期格式选择为“yyyy-mm”。

airDatepickerInput("input_var_name",
                   label = "Start month",
                   value = "2015-10-01",
                   maxDate = "2016-08-01",
                   minDate = "2015-08-01",
                   view = "months", #editing what the popup calendar shows when it opens
                   minView = "months", #making it not possible to go down to a "days" view and pick the wrong date
                   dateFormat = "yyyy-mm"
                   )

我刚刚处理的版本看起来像这样（灰色可能是我截取屏幕截图时光标悬停的地方）：

Answer 3

不确定是否仍然相关，但我最近正在寻找类似的东西并来到这个解决方案

library(shiny)
library(shinyjs)
library(purrr)
library(tibble)
library(stringr)
library(lubridate)
library(reactable)

dates = seq.Date(from = as_date("2022-01-01"), to = as_date("2023-02-01"), by = "month")
labels = paste(month(c(as_date(dates)), label = T), year(c(as_date(dates))))
df = tibble(date = dates, letters = letters[1:14])

ui = fluidPage(
  
  tags$head(tags$style(HTML(".selected {background: rgba(125, 181, 171, .25);}")), shinyjs::useShinyjs()),
  
  div(style = "margin-top: 50px; display: flex; flex-direction: column; gap: 20px; align-items: center;",
  div(style = "display: flex; gap: 1rem;",    
      pmap(
        .l = list(
          dates = dates, 
          labels = labels, 
          classes = c(rep("", 3), rep("selected", 4), rep("", 7))), .f = ~actionButton(inputId = paste0("btn_", ..1), label = ..2) %>%tagAppendAttributes(class = ..3))),
  reactableOutput(outputId = "table"))
  
)

server = function(input, output, session){
  
  range = reactiveValues(from = "2022-04-01", to = "2022-07-01")
  
    map(paste0("btn_", dates), .f = function(x) {
      
      observeEvent(input[[x]], {
        
        freezeReactiveValue(input, "from")
        freezeReactiveValue(input, "to")
        
        val = str_remove(x, pattern = "btn_")
        
        if(!is_null(range$to)){
          
          range$from = val
          range$to = NULL
          
        }else if(is_null(range$to)){
          
          if(val > range$from){
            
            range$to = val
            
          }else if(val < range$from){
            
            range$to = range$from
            range$from = val
            
          }else if(val == range$from){
            
            range$to = NULL
            
          }
        }
        
        dateseq = if(is_null(range$to)){as_date(range$from)}else{seq.Date(as_date(range$from), as_date(range$to), by = "month")}
        map(.x = paste0("btn_", dates)[!paste0("btn_", dates)%in%paste0("btn_", dateseq)], .f = ~shinyjs::removeClass(id = .x, class = "selected"))
        map(.x = paste0("btn_", dateseq), .f = ~shinyjs::addClass(id = .x, class = "selected"))
        
    })
  })
    
  output$table = renderReactable({
    
    datevalues = if(is_null(range$to)){c(range$from, range$from)}else{c(range$from, range$to)}
    
    reactable(df[df$date>=as_date(datevalues[1])&df$date<=as_date(datevalues[2]),], defaultPageSize = 14)
    
  })  
}
shinyApp(ui, server)