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I'm trying to implement a form to upload a file, but start to do operation when I click on a submit button, the problem is that a have a strange mistake and I don't know what's it, I made the example of the tutorial and it worked without problem, now I'm implementing the same but with index.html and it don't work.
The mistake is: "Error in if (input$uploadFasta == 0) return(NULL) : argument is of length zero"
my index.html is like:
<form class="span12 menu-med-upload">
<div class="row-fluid">
<center>
<div class="custom-input-file btn btn-inverse">
<input type="file" size="1" id="fileFasta" class="input-file" />
</div>
</center>
<button id="uploadFasta" type="button" class="btn action-button shiny-bound-input" >go!</button>
</div>
</form>
my server.R is like:
output$table <- renderText({
if(input$uploadFasta == 0)
return(NULL)
myRenderTable()
})
somebody know what's the problem, and thank for all and sorry if this topic was open before but I could not find.
867
Action button is a custom input binding and I'll bet it's not being loaded.
Add a global.R file in the same directory as server.R, and have it contain this:
addResourcePath(
prefix='actionbutton',
directoryPath=system.file('actionbutton',
package='shinyIncubator'))
Then in your index.html, add the following to <head>:
<script src="actionbutton/actionbutton.js"></script>
(As always, be sure to have an explicit closing </script> tag--don't use <script />.)
101
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