[英]Shiny update choices of selectizeInput based on radio buttons
我試圖根據用戶是單擊“通用名稱”還是“科學名稱”按鈕來更新selectizeInput()
的選項。 默認值為“通用名稱”。
我從這個答案中知道conditionalPanel()
,但我的選擇將鏈接到輸出圖,所以我需要它們是反應式的。 因此,在單擊“科學名稱”時,我希望清除當前的選擇,然后只有新的選擇 (names_vector2) 可供選擇。 同樣,如果用戶然后單擊回到“通用名稱”,我希望清除當前選擇,並且只有來自 names_vector1 的選擇可供選擇。
希望這是有道理的!
library(shiny)
library(shinyWidgets)
names_vector1 = paste0("common", 1:10)
names_vector2 = paste0("scientific", 1:10)
ui = fluidPage(
fluidRow(
selectizeInput(
inputId = "species_selector",
label = "Choose a species:",
selected = "common1",
choices = c("Choose" = "", names_vector1),
options = list(
maxOptions = 5,
maxItems = 4
)
),
awesomeRadio(
inputId = "species_selector_type",
label = NULL,
choices = c("Common name","Scientific name"),
selected = "Common name",
inline = TRUE
)
)
)
server = server = server = function(input, output, session){
# I want to change the selectizeInput choices as the user clicks the buttons:
# "Common name" and "Scientific name"
observeEvent(input$species_selector_type {
if (input$species_selector_type == "Scientific name")
updateSelectizeInput(
session,
inputId = "species_selection",
choices = c("Choose" = "", names_vectors),
)
})
# The desired result is to:
# 1. Clear the current selectiveInput selected names each time a new button is clicked
# 2. Update the choices so that:
# Common name = names_vector1
# Scientific name = names_vector2
}
shinyApp(ui, server)
你快到了 - 添加了一個 else if 語句:
library(shiny)
library(shinyWidgets)
names_vector1 = paste0("common", 1:10)
names_vector2 = paste0("scientific", 1:10)
ui = fluidPage(fluidRow(
selectizeInput(
inputId = "species_selector",
label = "Choose a species:",
selected = "common1",
choices = c("Choose" = "", names_vector1),
options = list(maxOptions = 5,
maxItems = 4)
),
awesomeRadio(
inputId = "species_selector_type",
label = NULL,
choices = c("Common name", "Scientific name"),
selected = "Common name",
inline = TRUE
)
))
server = server = server = function(input, output, session) {
observeEvent(input$species_selector_type, {
if (input$species_selector_type == "Common name") {
updateSelectizeInput(session,
inputId = "species_selector",
choices = c("Choose" = "", names_vector1))
} else if (input$species_selector_type == "Scientific name") {
updateSelectizeInput(session,
inputId = "species_selector",
choices = c("Choose" = "", names_vector2))
}
})
}
shinyApp(ui, server)
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