自动完成并在闪亮的文本框中选择多个值

Question

是否可以 select 使用类似于 google 搜索和堆栈溢出标签 selection in shiny text box 的自动完成字符串的多值。

dataset<-cbind("John Doe","Ash","Ajay sharma","Ken Chong","Will Smith","Neo"....etc)

我想 select 来自上述数据集的多个变量作为自动填充我的文本框并将其传递给我的 server.R

ui.R

shinyUI(fluidPage(
  titlePanel("test"),

  sidebarLayout(
    sidebarPanel(
      helpText("text"),

      textInput("txt","Enter the text",""),
      #Pass the dataset here for auto complete

     ),

    mainPanel(
      tabsetPanel(type="tab",tabPanel("Summary"),textOutput("text2"))

    )
  )
))

server.R

# server.R

shinyServer(function(input, output) {

output$text2<- renderText({
paste("hello",input$txt)

 })


}
)

已编辑

我使用来自 shinysky 的 select2input selecting 多个变量，但现在我添加了提交按钮以获取 selected价值观在一起。

#ui.R
select2Input("txt","This is a multiple select2Input",choices=c("a","b","c"),selected=c("")),

actionButton("go","submit")

我想绑定 selected 选项假设用户 selected a 和 c 然后新变量是

#server.R
input$go #if pressed submit button
var<-cbind("a","c")
output$text<-renderText({ print ("var")})

但这不起作用

Answer 1

查看 shinysky 包和 textInput.typeahead。您可以自己进一步自定义 textinput 的样式。 编辑： 我从 shinysky 包中添加了带有 select2Input 的示例，也供参考

rm(list = ls())

library(shinysky)
library(shiny)

my_autocomplete_list <- c("John Doe","Ash","Ajay sharma","Ken Chong","Will Smith","Neo")

ui <- shinyUI(
  fluidPage(tags$style(type="text/css",".shiny-output-error { visibility: hidden; }",".shiny-output-error:before { visibility: hidden; }"),
            tags$style(type="text/css","#search { top: 50% !important;left: 50% !important;margin-top: -100px !important;margin-left: -250px 
                       !important; color: blue;font-size: 20px;font-style: italic;}"),         

            mainPanel(  
              # one way of doing it
              textInput.typeahead(id="search",
                                  placeholder="Type your name please",
                                  local=data.frame(name=c(my_autocomplete_list)),
                                  valueKey = "name",
                                  tokens=c(1:length(my_autocomplete_list)),
                                  template = HTML("<p class='repo-language'>{{info}}</p> <p class='repo-name'>{{name}}</p>")
              ),
              br(),br(),
              # using select2Input
              select2Input("select2Input1","",choices=c(my_autocomplete_list),type = c("input", "select"))
              )
  )
)

server <- function(input, output, session) {}
shinyApp(ui = ui, server = server)

根据要求编辑 2。请像我一样将您的对象包装在 reactive 表达式中，例如var <- reactive({...}) 所以你可以 re-use 以后

rm(list = ls())

library(shinysky)
library(shiny)

my_autocomplete_list <- c("John Doe","Ash","Ajay sharma","Ken Chong","Will Smith","Neo")

ui <- shinyUI(
  fluidPage(sidebarPanel(select2Input("txt","",choices=c("a","b","c"),selected=c("")), br(),actionButton("go","submit"), width =2),
            mainPanel(textOutput('text'))
  )
)

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

  var <- reactive({
    if(input$go==0){return()}
    isolate({
      input$go
      cbind("a","c")
    })
  })  
  output$text <- renderText({var()})
}
shinyApp(ui = ui, server = server)

Answer 2

恕我直言，一种更简单的方法是使用 shiny::selectizeInput()。它允许您通过 choices 参数自动完成输入。

rm(list = ls())

library(shiny)

my_autocomplete_list <- c("John Doe","Ash","Ajay sharma",
                          "Ken Chong","Will Smith","Neo")

ui <- shinyUI(
  selectizeInput(
    inputId = 'search',
    label = 'Search',
    choices = my_autocomplete_list,
    selected = NULL,
    multiple = TRUE, # allow for multiple inputs
    options = list(create = FALSE) # if TRUE, allows newly created inputs
  )
)

server <- function(input, output, session) {}
shinyApp(ui = ui, server = server)

自动完成并在闪亮的文本框中选择多个值

Auto complete and selection of multiple values in text box shiny

textbox

r

autocomplete

shiny