It can be used with apache upload progress module, nginx upload progress module or lighttpd, read more here: http://drogomir.com/blog/2008/6/18/upload-progress-bar-with-mod_passenger-and-apache
Usage
some html:
<div id="uploading">
<div id="progress" class="bar">
<div id="progressbar"> </div>
<div id="percents"></div>
</div>
</div>
then some css:
.bar {
width: 300px;
}
#progress {
background: #eee;
border: 1px solid #222;
margin-top: 20px;
}
#progressbar {
width: 0px;
height: 24px;
background: #333;
}
and a bit of javascript:
$(function() {
$('form').uploadProgress({
/* scripts locations for safari */
jqueryPath: "../lib/jquery.js",
uploadProgressPath: "../jquery.uploadProgress.js",
/* function called each time bar is updated */
uploading: function(upload) {$('#percents').html(upload.percents+'%');},
/* selector or element that will be updated */
progressBar: "#progressbar",
/* progress reports url */
progressUrl: "/progress",
/* how often will bar be updated */
interval: 2000
});
});
If you need to update the progress bar from a different domain or subdomain, liek if your upload server is different from your normal web server, you can try the JSON-P protocol, like this:
$(function() {
$('form').uploadProgress({
/* scripts locations for safari */
jqueryPath: "../lib/jquery.js",
uploadProgressPath: "../jquery.uploadProgress.js",
/* function called each time bar is updated */
uploading: function(upload) {$('#percents').html(upload.percents+'%');},
/* selector or element that will be updated */
progressBar: "#progressbar",
/* progress reports url in a different domain or subdomain from caller */
progressUrl: "uploads.somewhere.com/progress",
/* how often will bar be updated */
interval: 2000,
/* use json-p for cross-domain call */
dataType: 'jsonp'
});
});
defaults:
interval: 2000
progressBar: "#progressbar"
progressUrl: "/progress"
start: function() {}
uploading: function() {}
complete: function() {}
success: function() {}
error: function() {}
uploadProgressPath: '/javascripts/jquery.js'
jqueryPath: '/javascripts/jquery.uploadProgress.js'
dataType: 'json'
License
Ruby on Rails is released under the MIT License.