如何使用来自DT的Colvis在Shiny中仅下载数据框中的选定列?
我正在使用dt
软件包的按钮colvis
来选择我要在表中显示的列。在这里,您有更多 info 关于按钮colvis
。 它可以很好地工作,它隐藏了我不想选择的列,结果将显示给用户。
但是,下载文件时似乎没有更新此信息。
如果我只选择“ petal.width”和“物种”:
我仍然有所有的列,而不是选定的列。
我一直在试图找到解决方案,但是我什么都没找到。
有人知道如何解决吗?
提前致谢。
这是我的代码:
library(shiny)
library(DT)
ui <- fluidPage(
dataTableOutput("table")
)
server <- function(input, output, session) {
output$table <- renderDataTable({
datatable(
iris,
filter = list(position = 'top', clear = FALSE),
selection = "none", #this is to avoid select rows if you click on the rows
rownames = FALSE,
extensions = 'Buttons',
options = list(
scrollX = TRUE,
dom = 'Blrtip',
buttons =
list(I('colvis'),'copy', 'print', list(
extend = 'collection',
buttons = list(
list(extend = 'csv', filename = paste0("iris"), title = NULL),
list(extend = 'excel', filename = paste0("iris"), title = NULL)),
text = 'Download'
)),
lengthMenu = list(c(10, 30, 50, -1),
c('10', '30', '50', 'All'))
),
class = "display"
)
})
}
shinyApp(ui, server)
I am using the button colvis
from the DT
package to select which columns I would like to show in the table. Here you have more info about the button colvis
.
It works perfectly fine, it hides the columns that I don't want to select and the result is shown to the user.
However, it seems that this info is not updated when I download the file.
If I only select "Petal.Width" and "Species":
Then, I download the file... and I open it. I still have all the columns and not the selected ones.
I have been trying to find a solution, but I haven't found anything.
Does anyone know how to fix it?
Thanks in advance.
Here is my code:
library(shiny)
library(DT)
ui <- fluidPage(
dataTableOutput("table")
)
server <- function(input, output, session) {
output$table <- renderDataTable({
datatable(
iris,
filter = list(position = 'top', clear = FALSE),
selection = "none", #this is to avoid select rows if you click on the rows
rownames = FALSE,
extensions = 'Buttons',
options = list(
scrollX = TRUE,
dom = 'Blrtip',
buttons =
list(I('colvis'),'copy', 'print', list(
extend = 'collection',
buttons = list(
list(extend = 'csv', filename = paste0("iris"), title = NULL),
list(extend = 'excel', filename = paste0("iris"), title = NULL)),
text = 'Download'
)),
lengthMenu = list(c(10, 30, 50, -1),
c('10', '30', '50', 'All'))
),
class = "display"
)
})
}
shinyApp(ui, server)
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感谢StéphaneLaurent的答案,我设法找到了答案。
我遇到了一些问题,可以使用两个按钮(CSV和Excel),以及如何使用建议的解决方案来组织列表,但是我找到了做到这一点的方法。
我将使用原始代码添加答案,以防有人像我这样的问题。
Thanks to Stéphane Laurent's answer, I managed to find an answer.
I had some problems to have both buttons (csv and excel) and how to organise the lists with the proposed solution, but I found the way to do it.
I will add the answer with the original code just in case someone has problems like me.