laravel 5.1 formData - AJAX - PHP- Uploading multiple files - ajax

Question

I can not get the formData from the file upload
form.blade.php
<form method="POST" class="form-horizontal" enctype="multipart/form-data" id="modal-file-upload">
<input type="hidden" name="_token" value="{{ csrf_token() }}">
<input type="hidden" name="folder" value="" id="modal-file-upload-folder">
<div class="modal-header">
<h4 class="modal-title">Upload New File</h4>
</div>
<div class="modal-body">
<div class="form-group">
<label for="file" class="col-sm-3 control-label">
File
</label>
<div class="col-sm-8">
<input multiple="true" accept="image/*" required="true" id="fileToUpload" type="file" name="file[]">
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" onclick="close_upload_view()">Cancel</button>
<button class="btn btn-primary" id="btn-upload">Upload File</button>
</div>
</form>
Controller
public function uploadMultiFile(Request $request) {
// getting all of the post data
$data = $request->input('formData');
var_dump($data); current return null
}

Answer 1

<script>
// Confirm file delete
function close_upload_view() {
$("#modal-file-upload").modal("hide");
return false;
}
$.ajaxSetup({
headers: { 'X-CSRF-Token' : $('meta[name=_token]').attr('content') }
});
$("#modal-file-upload").submit(function(e){
e.preventDefault();
//var formData = new FormData(document.getElementById('modal-file-upload')[0]);
var fd = new FormData();
var ins=document.getElementById('fileToUpload').files.length;
for(var x=0;x<ins;x++)
{
fd.append("fileToUpload[]", document.getElementById('fileToUpload').files[x]);
}
var folder = $("input#modal-file-upload-folder").val();
var token = $("input[name=_token]").val();
var dataString = 'formData='+fd+'&folder='+folder+'&token='+token;
$.ajax({
type: "POST",
url: '{!! url() !!}/admin/upload/multifile',
cache: false,
data : dataString,
processData: false, // Don't process the files
contentType: false, // Set content type to false as jQuery will tell the server it
dataType: 'JSON',
success : function(data){
console.log(data);
}
},"json");
});
</script>