jQuery - receiving the $_FILES array using $.post - php

Question

I am attempting to submit a form via jQuery. My form contains fields and a file that must be uploaded. It is of type ENCTYPE="multipart/form-data".
I can receive all my field values using: post = $('#myForm').serialize();
But how do I receive the $_FILES array? I need this to process the uploaded file.
Is this possible using jQuery, and if so how? Or do I need to use a special upload plugin for jQuery?

Answer 1

jquery form is the best way to do it,
you can add it to any normal form,
<form method="post" action="URL">
<input type="file" name="file">
<input type="text" name"text">
<input type="submit">
</form>
<script type="text/javascript">
$(document).ready(function() {
$(form).ajaxForm();
})
</script>
will work as expected, but with ajax.
http://malsup.com/jquery/form/#code-samples

Answer 2

You cannot upload files through javascript.
Check out this related question:
Is it possible to use Ajax to do file upload?
Essentially, the two most popular ways of "faking" AJAX for file uploads is using a Flash plugin such as SWFUpload or submitting the form to a hidden iframe that processes the request.

Answer 3

Form contains a file input, but is missing method=POST and enctype=multipart/form-data on the form. The file will not be sent

Answer 4

Use FormData
<form>
<label for="imageToSend">Cargar imagen a la galeria</label>
<input type="file" name="imageToSend" id="imageToSend" value="Cargar imagen" />
</form>
<script>
$('#imageToSend').on('change',function(event){
var dialog = $('#dialog');
var Data = new FormData();
Data.append('imageToSend',$('#imageToSend')[0].files);
$(this).val('');//Clear input file
$.ajax({
url: "/upload",
data: Data,
processData: false,
contentType: false,
type:'POST',
success: function(data){
if(data.success){
//success handler
}else if(!data.success){
//error backend handler
}
},
error: function(data){
//error handler Ej:404 status
}
})
});
</script>

Answer 5

If you can control the environment, like, say, you're writing an admin app for an intranet in which you recommend the browser, then real AJAX file uploads are possible with Firefox 3 and above. In all other cases, the iframe workaround or a Flash based uploader is the way to go.

Answer 6

It's possible, but not working in Google Chrome )
Look!
...
<form method='post' enctype='multipart/form-data'>
<input type="file" id="imf" name="imf"/>
<input type="button" id="Save"/>
</form>
...
$("#Save").live("click", function(){
var photo = document.getElementById("imf");
var file = photo.files[0];
$.post('/user/saveNewPhoto', {'imf':file.getAsDataURL(), fname:file.fileName }, function( data ){
alert ( data );
});
});
upload side script
need decode base64 ) and that is all
but i don't test this script on big size file