pickerInput中的选择总是单行显示。有没有一种方法可以将它们带到下一行?当选择的长度过长而使选择不显示在屏幕上时,这是一个问题。我特别需要pickerInput,因为它具有实时搜索功能,可以选择全部/取消选择所有功能。
library("shiny")
library("shinyWidgets")
ui <- fluidPage(
pickerInput(inputId="id",label="Some name",
choices=c("Choice 1 is small","Choice 2 is average sized",
"But choice 3 is very big and sometimes when the length of the qption is long it leaves the screen, so I need a UI fix to wrap the question to fit the width of the pickerInput. I want pickerInput because it has select all/deselect all button."),
selected=NULL,multiple=T,options=list(`actions-box`=TRUE,size=10,`selected-text-format`="count > 3")
)
)
server <- function(input, output, session) {}
shinyApp(ui = ui, server = server)
答案 0 :(得分:4)
这里有两个解决方案,都使用choicesOpt
参数来防止修改服务器端的值。
我使用了stringr::str_trunc
:
library("shiny")
library("shinyWidgets")
my_choices <- c(
"Choice 1 is small","Choice 2 is average sized",
"But choice 3 is very big and sometimes when the length of the qption is long it leaves the screen, so I need a UI fix to wrap the question to fit the width of the pickerInput. I want pickerInput because it has select all/deselect all button."
)
ui <- fluidPage(
pickerInput(
inputId = "id",
label = "Some name",
choices = my_choices,
selected = NULL,
multiple = TRUE,
options = list(
`actions-box` = TRUE, size = 10, `selected-text-format` = "count > 3"
),
choicesOpt = list(
content = stringr::str_trunc(my_choices, width = 75)
)
),
verbatimTextOutput(outputId = "res")
)
server <- function(input, output, session) {
output$res <- renderPrint(input$id)
}
shinyApp(ui = ui, server = server)
我使用stringr::str_wrap
将文本段落分成几行,然后用stringr::str_replace_all
用\n
(HTML版本的<br>
)替换\n
library("shiny")
library("shinyWidgets")
my_choices <- c(
"Choice 1 is small","Choice 2 is average sized",
"But choice 3 is very big and sometimes when the length of the qption is long it leaves the screen, so I need a UI fix to wrap the question to fit the width of the pickerInput. I want pickerInput because it has select all/deselect all button."
)
my_choices2 <- stringr::str_wrap(my_choices, width = 80)
my_choices2 <- stringr::str_replace_all(my_choices2, "\\n", "<br>")
ui <- fluidPage(
# tags$style(".text {width: 200px !important; word-break: break-all; word-wrap: break-word;}"),
pickerInput(
inputId = "id",
label = "Some name",
choices = my_choices,
selected = NULL,
multiple = TRUE,
options = list(
`actions-box` = TRUE, size = 10, `selected-text-format` = "count > 3"
),
choicesOpt = list(
content = my_choices2
)
),
verbatimTextOutput(outputId = "res")
)
server <- function(input, output, session) {
output$res <- renderPrint(input$id)
}
shinyApp(ui = ui, server = server)