单击任何按钮“ rename-me”后,我想调用label_function()
,它会产生一个随机值,该值成为各个按钮的新按钮标签。使用updateActionButton
机制不会显示,即标签不会更改。
此外,当单击按钮时,同时选择表格行。是否可以仅单击按钮,否则行选择可能会导致其他触发,但如果在其他位置单击该行,则保留行选择?
正在运行的参考代码是:
library(shiny)
library(data.table)
library(DT)
ui = fluidPage(
mainPanel(
DT::dataTableOutput("datatable")
)
)
server = function(session, input, output) {
shinyInput <- function(FUN, len, id, ...) {
inputs <- character(len)
for (i in seq_len(len)) {
inputs[i] <- as.character(FUN(paste0(id, i), ...))
}
inputs
}
label_function <- function(id = character()) {
round(rnorm(1, 0, 1), 2)
}
employee <- c('John Doe','Peter Gynn','Jolie Hope')
salary <- c(21000, 23400, 26800)
startdate <- as.Date(c('2010-11-1','2008-3-25','2007-3-14'))
dt <- setDT(data.frame(employee, salary, startdate))
dt <- dt[, action := shinyInput(actionButton,
dim(dt)[1],
'button_',
label = "rename-me",
onclick = 'Shiny.setInputValue(\"select_button\", this.id.concat(\"_\", Math.random()))')]
output$datatable <- DT::renderDataTable(DT::datatable({dt}, rownames = FALSE, escape = FALSE))
observeEvent(input$select_button, {
rowid <- as.numeric(strsplit(input$select_button, "_")[[1]][2])
selected_botton <- paste0("botton_", rowid)
updateActionButton(session, selected_botton, label = label_function(id = selected_botton))
print(paste0("botton_", rowid))
})
}
# Run the application
shinyApp(ui = ui, server = server)