I have uploading several file working already. The problem is that I want
to make a oreview before uploading.
I have studied as well the code of JQuery Upload. I have copied and pasted
the content of all their pages and files. The problem is I cannot add the
files because the "action" is really strange:

<!-- The file upload form used as target for the file upload widget -->
<form id="fileupload" action="server/php/" method="POST" enctype="multipart/form-data">
<!-- The fileupload-buttonbar contains buttons to add/delete files and start/cancel the upload -->

They do not have a controller with a function server/php , but they do have
a folder server/php with other files. I have downloaded this folder and
added it to my rails project, but I have no idea how I can link action="server/php/"
with that folder.

On Friday, October 19, 2012 2:17:28 PM UTC+2, Walter Lee Davis wrote:

On Oct 18, 2012, at 10:51 AM, akvarel wrote:

I was following RailsCasts tutorial JQuery Uploading and I ran into
I would like to be able to select several files, preview only the name
of the files on the website, remove those, which where selected by mistake
and only then upload the neccessary ones in Ruby on Rails.
I have looked through as well HTML5 and jQuery-File-Upload but I am
pretty new to Ruby on Rails and all this everything. If somebody gives me a
hint what is better and some primitive codes, I will be really happy
I have got a code but it creates a new Painting and uploads directly, so
it doesnt do what I want.
<%= form_for Painting.new do |f| %>
<%= f.label :image, "Upload paintings:" %>
<%= f.file_field :image, multiple: true, name: "painting[image]" %>
<% end %>

I have found as well another code hier but it doesnt support multiple
selection and I need the only the name of the file to be previewed.
<script type="text/javascript">
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();

reader.onload = function (e) {
$('#blah').attr('src', e.target.result);


<form id="form1" runat="server">
<input type='file' onchange="readURL(this);" multiple />
<img id="blah" src="#" alt="your image" />

I would be really grateful if somebody helps me to deal with it.
For starters, do you have uploading a single file working correctly yet?
That might be an excellent place to start. You've shown a number of
client-side snippets, but do you have the server ready to play "catch"?
Also, if you are adding a file field to a form_for helper, you have to
specify that it's a multipart form:

<%= form_for @quote, :html => {:multipart => true} do |f| %>

Otherwise the browser is under no compulsion to actually send you the

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grouprubyonrails-talk @
postedOct 19, '12 at 9:17a
activeOct 21, '12 at 11:48p

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Akvarel: 3 posts Walter Lee Davis: 3 posts



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