To see this app in action, run this in R:
library(shiny)
runGist('https://gist.github.com/yihui/6091942')
\documentclass{article} | |
\begin{document} | |
<<names>>= | |
input$firstname | |
input$lastname | |
@ | |
\end{document} |
library(knitr) | |
shinyServer(function(input, output) { | |
output$report = downloadHandler( | |
filename = 'myreport.pdf', | |
content = function(file) { | |
out = knit2pdf('input.Rnw', clean = TRUE) | |
file.rename(out, file) # move pdf to file for downloading | |
}, | |
contentType = 'application/pdf' | |
) | |
}) |
library(shiny) | |
shinyUI(basicPage( | |
textInput('firstname', 'First name', value = 'Jimmy'), | |
textInput('lastname', 'Last name', value = 'John'), | |
downloadButton('report') | |
)) |
Hello, this is all bull sit..
not work any code..
just post foll example with working demo..
there are too many errors are occure when i reguest for generate PDF.
anyone can help me to generate PDF of my data.. or any form of data.. in shiny.. plz.. help me/.. !!
It's awesome. Thanks a lot man!
I had similiar problems with the downloadHandler when generating longer pdf reports.
The timeout is default 45 s and it can be set by changing the http_keepalive_timeout parameter in the shiny-server configuration file @natrot. See here:
https://github.com/rstudio/shiny-server/blob/master/config/shiny-server-rules.config
@jonathanflint try to use file.copy instead of file.rename. It does not seem to have the same problem.
I tried to use your example but I am not able to change the name of the pdf, cuz when I do that it causes error.
Hi, Yihui
I have posted the same message on your blog but I think this might be a better place to discuss the issue.
I published the exact the same sample app on shinyapps.io but I came cross the following issues (I can run locally on my windows as well as RStudio Server (On an Ubuntu)):
2018-10-26T01:48:44.985563+00:00 shinyapps[535924]: Server version: 1.6.8-6
2018-10-26T01:48:44.985565+00:00 shinyapps[535924]: LANG: en_US.UTF-8
2018-10-26T01:48:44.985618+00:00 shinyapps[535924]: rmarkdown version: NA
2018-10-26T01:48:44.985614+00:00 shinyapps[535924]: R version: 3.5.1
2018-10-26T01:48:44.985616+00:00 shinyapps[535924]: shiny version: 1.1.0
2018-10-26T01:48:45.133726+00:00 shinyapps[535924]:
2018-10-26T01:48:44.985619+00:00 shinyapps[535924]: knitr version: 1.20
2018-10-26T01:48:44.985617+00:00 shinyapps[535924]: httpuv version: 1.4.5
2018-10-26T01:48:45.128881+00:00 shinyapps[535924]: Using jsonlite for JSON processing
2018-10-26T01:48:45.172152+00:00 shinyapps[535924]: Listening on http://127.0.0.1:41445
2018-10-26T01:48:44.985620+00:00 shinyapps[535924]: RJSONIO version: NA
2018-10-26T01:48:44.985621+00:00 shinyapps[535924]: htmltools version: 0.3.6
2018-10-26T01:48:45.133728+00:00 shinyapps[535924]: Starting R with process ID: '18'
2018-10-26T01:48:44.985699+00:00 shinyapps[535924]: Using pandoc at /opt/connect/ext/pandoc2
2018-10-26T01:48:45.172150+00:00 shinyapps[535924]:
2018-10-26T01:48:44.985619+00:00 shinyapps[535924]: jsonlite version: 1.5
2018-10-26T01:48:54.630740+00:00 shinyapps[535924]:
2018-10-26T01:48:54.630742+00:00 shinyapps[535924]:
2018-10-26T01:48:54.630744+00:00 shinyapps[535924]: processing file: input.Rnw
2018-10-26T01:48:54.652924+00:00 shinyapps[535924]: ordinary text without R code
2018-10-26T01:48:54.652725+00:00 shinyapps[535924]:
|
| | 0%
|
|...................... | 33%
2018-10-26T01:48:54.652925+00:00 shinyapps[535924]:
2018-10-26T01:48:54.653358+00:00 shinyapps[535924]:
|
|........................................... | 67%
2018-10-26T01:48:54.654942+00:00 shinyapps[535924]: label: names
2018-10-26T01:48:54.729765+00:00 shinyapps[535924]: ordinary text without R code
2018-10-26T01:48:54.729719+00:00 shinyapps[535924]:
|
|.................................................................| 100%
2018-10-26T01:48:54.729766+00:00 shinyapps[535924]:
2018-10-26T01:48:54.730620+00:00 shinyapps[535924]:
2018-10-26T01:48:54.732189+00:00 shinyapps[535924]: output file: input.tex
2018-10-26T01:48:54.732189+00:00 shinyapps[535924]:
2018-10-26T01:48:54.734834+00:00 shinyapps[535924]: Warning: Error in loadNamespace: there is no package called ‘tinytex’
2018-10-26T01:48:54.739940+00:00 shinyapps[535924]: [No stack trace available]
Thanks,
Liang
Hi yihui,
This is really a very helpful information. However, I am getting the following warning while executing "app".
Warning in file.rename(out, file) : cannot rename file 'input.pdf' to '/tmp/RtmpAeLXey/file1c6b135b80b9.pdf', reason 'Invalid cross-device link'
No output file is being created after...
Will you please help me how to solve this? Thanks
After the whole day searching i just know here that objects accessible in .Rnw from ui and server file so u can create reports in shinny app...
ty man