在Shiny中获取上传文件的名称作为变量 [英] Get the name of uploaded file as a variable in Shiny
本文介绍了在Shiny中获取上传文件的名称作为变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
是否可以在Shiny中执行此操作?它没有一个可重复的例子,但你可以抓住输入和名称的文件的名称
$。 b$ b
library(shiny)
ui< - fluidPage(
titlePanel文件名),
sidebarLayout(
sidebarPanel(
fileInput('file1','选择文件',
accept = c(
' text / csv',
'text / comma-separated-values',
'.csv'
)
)
),
mainPanel(
textOutput(myFileName)
)
)
)
服务器< - 函数(输入,输出){
file_name< - reactive({
inFile< - input $ file 1
if(is.null(inFile))
return(NULL)
return(stringi :: stri_extract_first(str = inFile $ name,regex = 。*(?= \\。)))
})
输出$ myFileName< - renderText({file_name()})
}
运行应用程序
shinyApp(ui = ui,server = server)
I am creating a Shiny App where one of the sections of a Venn Diagram will be named after the uploaded file(done by user). For example, if someone uploads a file ClientXYZ.csv, one section of the Venn diagram will be named "ClientXYZ"
Is it possible to do this in Shiny?
解决方案
Its not clear without a reproducible example, but you can grab the name of the file with input and name.
library(shiny)
ui <- fluidPage(
titlePanel("Grabbing my file name"),
sidebarLayout(
sidebarPanel(
fileInput('file1', 'Select your file',
accept = c(
'text/csv',
'text/comma-separated-values',
'.csv'
)
)
),
mainPanel(
textOutput("myFileName")
)
)
)
server <- function(input, output) {
file_name <- reactive({
inFile <- input$file1
if (is.null(inFile))
return(NULL)
return (stringi::stri_extract_first(str = inFile$name, regex = ".*(?=\\.)"))
})
output$myFileName <- renderText({ file_name() })
}
# Run the application
shinyApp(ui = ui, server = server)
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