Menu
I am developing a web application through shiny.
I am trying to upload my files using the fileinput() in shiny.
I have my code working. I intially tried to upload a file of 1.38KB and worked fine.
later when I tried to upload a file approximately 1.58MB, it throws me an error,
> > <html> <head><title>413 Request Entity Too Large</title></head> <body bgcolor="white"> <center><h1>413 Request
> Entity Too Large</h1></center> <hr><center>nginx/1.12.1</center>
> </body>
Could anyone help me, how i could avoid this error ?
Below is the code for Ui and Server I am using.
ui <- fluidPage(
# App title ----
titlePanel("Uploading Files"),
# Sidebar layout with input and output definitions ----
sidebarLayout(
# Sidebar panel for inputs ----
sidebarPanel(
# Input: Select a file ----
fileInput("file1", "Choose CSV File",
multiple = TRUE,
accept = c("text/csv",
"text/comma-separated-values,text/plain",
".csv")),
# Horizontal line ----
tags$hr(),
# Input: Checkbox if file has header ----
checkboxInput("header", "Header", TRUE),
# Input: Select separator ----
radioButtons("sep", "Separator",
choices = c(Comma = ",",
Semicolon = ";",
Tab = "\t"),
selected = ","),
# Input: Select quotes ----
radioButtons("quote", "Quote",
choices = c(None = "",
"Double Quote" = '"',
"Single Quote" = "'"),
selected = '"'),
# Horizontal line ----
tags$hr(),
# Input: Select number of rows to display ----
radioButtons("disp", "Display",
choices = c(Head = "head",
All = "all"),
selected = "head")
),
# Main panel for displaying outputs ----
mainPanel(
# Output: Data file ----
tableOutput("contents")
)
)
)
Server Code
shiny.maxRequestSize=30*1024^2
server <- function(input, output) {
output$contents <- renderTable({
# input$file1 will be NULL initially. After the user selects
# and uploads a file, head of that data file by default,
# or all rows if selected, will be shown.
req(input$file1)
df <- read.csv(input$file1$datapath,
header = input$header,
sep = input$sep,
quote = input$quote)
if(input$disp == "head") {
return(head(df))
}
else {
return(df)
}
})
}
From web, I also found that I could increase the capacity , and have added a piece of code above my server function.
EDIT: Adding the console with error
362
I am working with AWS environment and failed to mention in my post.
Here is the reason for my error. The parameter client_max_body_size was initially 1MB, that restricted to upload my files.
When I increased it to 50MB, i am able to upload larger files.
To add, this configuration will fail, if you will terminate your instance.
135
change your maxrequestsize and put:
options(shiny.maxRequestSize=30*1024^2)
hope it helps
Edit:
The 30 means the mb so if you will upload more than 5 mb you need to use it but if your files will be less than 5, don't put it because shiny default upload size is 5mb.
Edit 2:
Try to use DT package (interactive table) using:
install.packages("DT")
Then change your code on server and put library(DT) before shinyServer:
`output$tb = DT::renderDataTable({
req(input$file1)
df <- read.csv(input$file1$datapath,
header = input$header,
sep = input$sep,
quote = input$quote)
if(input$disp == "head") {
return(head(df))
}
else {
return(df)
}
})`
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
