Laravel uploading file using Ajax - php

Question

I'm using the Laravel framework. I have a form of adding a new item to the database and in that form the user can also drag and drop a file. Then, a progress bar is displayed until it's completed, using Ajax for uploading the file to the server.
Once submitting that form, I run the addItem function in a controller and I want to do/check:
That the file is already hosted in the server (successful upload)
If the file is hosted in the server, how do I find it? (I gave it a random name)
If the user chose not to submit the form, I wish to erase that file from the server, so I won't have files that are not connected to any item on my database
Can you suggest any ideas on how to complete these tasks?

Answer 1

To send files by AJAX you need to use FormData which is a class of XMLHttpRequest2, it doesn't work with IE<10.
You also need AJAX2 to show progress.
SAMPLE SUBMIT FORM WITH FILES AND PROGRESS VIA AJAX:
Here I have made an example. In this example the form sends the data and files via AJAX using FormData and show the upload progress percentage in #progress using the progress event. Obviously it is a sample and it could be changed to adapt it.
$('form').submit(function(e) { // capture submit
e.preventDefault();
var fd = new FormData(this); // XXX: Neex AJAX2
// You could show a loading image for example...
$.ajax({
url: $(this).attr('action'),
xhr: function() { // custom xhr (is the best)
var xhr = new XMLHttpRequest();
var total = 0;
// Get the total size of files
$.each(document.getElementById('files').files, function(i, file) {
total += file.size;
});
// Called when upload progress changes. xhr2
xhr.upload.addEventListener("progress", function(evt) {
// show progress like example
var loaded = (evt.loaded / total).toFixed(2)*100; // percent
$('#progress').text('Uploading... ' + loaded + '%' );
}, false);
return xhr;
},
type: 'post',
processData: false,
contentType: false,
data: fd,
success: function(data) {
// do something...
alert('uploaded');
}
});
});
See how works!!: http://jsfiddle.net/0xnqy7du/3/
LARAVEL:
In laravel you can get the file with Input::file, move to another location and save in the database if you need it:
Input::file('photo')->move($destinationPath, $fileName);
// Sample save in the database
$image = new Image();
$image->path = $destinationPath . $fileName;
$image->name = 'Webpage logo';
$image->save();