我正在创建 R Shiny 应用程序,不确定如何使我的数据表格的行和列可编辑。我尝试使用来自“DT”包的renderDT=(editable = TRUE)
,但它没有起作用。请问是否有人可以告诉我如何在 R Shiny 中实现此功能?
如果我错了,那么在哪里设置editable = TRUE
可以使数据表格可编辑?
CSV
ID Type Range
21 A1 B1 100
22 C1 D1 200
App.R
library(shiny)
library(reshape2)
library(DT)
library(tibble)
###function for deleting the rows
splitColumn <- function(data, column_name) {
newColNames <- c("Unmerged_type1", "Unmerged_type2")
newCols <- colsplit(data[[column_name]], " ", newColNames)
after_merge <- cbind(data, newCols)
after_merge[[column_name]] <- NULL
after_merge
}
###_______________________________________________
### function for inserting a new column
fillvalues <- function(data, values, columName){
df_fill <- data
vec <- strsplit(values, ",")[[1]]
df_fill <- tibble::add_column(df_fill, newcolumn = vec, .after = columName)
df_fill
}
##function for removing the colum
removecolumn <- function(df, nameofthecolumn){
df[ , -which(names(df) %in% nameofthecolumn)]
}
### use a_splitme.csv for testing this program
ui <- fluidPage(
sidebarLayout(
sidebarPanel(
fileInput("file1", "Choose CSV File", accept = ".csv"),
checkboxInput("header", "Header", TRUE),
actionButton("Splitcolumn", "SplitColumn"),
uiOutput("selectUI"),
actionButton("deleteRows", "Delete Rows"),
textInput("textbox", label="Input the value to replace:"),
actionButton("replacevalues", label = 'Replace values'),
actionButton("removecolumn", "Remove Column"),
actionButton("Undo", 'Undo')
),
mainPanel(
DTOutput("table1")
)
)
)
server <- function(session, input, output) {
rv <- reactiveValues(data = NULL, orig=NULL)
observeEvent(input$file1, {
file <- input$file1
ext <- tools::file_ext(file$datapath)
req(file)
validate(need(ext == "csv", "Please upload a csv file"))
rv$orig <- read.csv(file$datapath, header = input$header, )
rv$data <- rv$orig
})
output$selectUI<-renderUI({
req(rv$data)
selectInput(inputId='selectcolumn', label='select column', choices = names(rv$data))
})
observeEvent(input$Splitcolumn, {
rv$data <- splitColumn(rv$data, input$selectcolumn)
})
observeEvent(input$deleteRows,{
if (!is.null(input$table1_rows_selected)) {
rv$data <- rv$data[-as.numeric(input$table1_rows_selected),]
}
})
output$table1 <- renderDT({
rv$data
})
observeEvent(input$replacevalues, {
rv$data <- fillvalues(rv$data, input$textbox, input$selectcolumn)
})
observeEvent(input$removecolumn, {
rv$data <- removecolumn(rv$data,input$selectcolumn)
})
observeEvent(input$Undo, {
rv$data <- rv$orig
})
}
shinyApp(ui, server)