我正在使用 R 3.3.1、Shiny v. 1.2.0 和 v. DT 0.5 开发 Shiny 应用程序。其中一个元素是跨越多个页面的可编辑数据表。在我进行编辑后,焦点行跳转到第 1 行,这会破坏用户体验。
以下是使用以下代码段重现此问题的具体步骤:
我在第 4 步中得到的不是理想的行为。我希望数据表将焦点保持在我刚刚编辑的同一行上。
我愿意使用自定义 JS 逻辑来完成这项工作。
看似相关的问题- DataTable doesn't remember paginated page after edit但我不知道如何在这个特定示例中从 R 桥接到 JS。
R.version.string
# "R version 3.3.1 (2016-06-21)"
library(shiny) # v. 1.2.0
library(DT) # v. 0.5
page_length <- 2 # 5 elements should span 3 pages
hardcoded_df <- read.table(text = "Fruit Color
Apple Red
Plum Purple
Blueberry Duh
Orange Carrot
Crocodile Green",
header = TRUE,
stringsAsFactors = FALSE)
ui <- fluidPage(
DT::dataTableOutput('x1')
)
server <- function(input, output) {
x = reactiveValues(df = hardcoded_df)
output$x1 = renderDT(DT::datatable(x$df, options = list(pageLength = page_length), selection = 'none', editable = TRUE))
proxy = dataTableProxy('x1')
observeEvent(input$x1_cell_edit, {
info = input$x1_cell_edit
str(info)
# str(input$x1_state)
i = info$row
j = info$col
v = info$value
# Without this line the table does not change but with it it jumps to row 1 after an edit.
x$df[i, j] <- isolate(DT::coerceValue(v, x$df[i, j]))
# Now we need to scroll to row i somehow ... clearly this does not work. Help!
selectPage(proxy, ceiling(i / page_length))
# selectRow(proxy, i)
})
}
# Run the application
shinyApp(ui = ui, server = server)
最佳答案
在这种情况下 DT::replaceData
与 resetPaging = FALSE
应该可以正常工作,如图所示 here .但是,定义 x
作为 reactiveValues()
导致我使用 isolate
解决的一些问题
server <- function(input, output, session) {
x = reactiveValues(df = hardcoded_df)
output$x1 = renderDT(DT::datatable(isolate(x$df),
options = list(pageLength = page_length), selection = 'none', editable = TRUE))
proxy = dataTableProxy('x1')
data = reactiveValues()
observeEvent(input$x1_cell_edit, {
info = input$x1_cell_edit
str(info)
# str(input$x1_state)
i = info$row
j = info$col
v = info$value
# Without this line the table does not change but with it it jumps to row 1 after an edit.
x$df[i, j] <- isolate(DT::coerceValue(v, x$df[i, j]))
DT::replaceData(proxy, x$df, resetPaging = FALSE) # important
# Now we need to scroll to row i somehow ... clearly this does not work. Help!
#selectPage(proxy, ceiling(i / page_length))
# selectRow(proxy, i)
})
}
关于R Shiny - 多页可编辑数据表在编辑后跳转到第 1 行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55215433/