Codeigniter upload file with dropzone and parameters - codeigniter

Question

Somehow it just doesnt upload the image to the folder. It goes so far as adding to the database (what model is all about) however no upload.
I hope to know what im doing rong. See my code bellow
The
HTML
<div class="dropzone infile dz-clickable" id="my-dropzone" name="mainFileUploader">
<div class="fallback">
<input name="file" id="file" type="file" multiple />
</div>
</div>
JS
var myDropzone = new Dropzone("#my-dropzone", {
url: admin_url+'add_image/material',
files: this,
method: "post",
addRemoveLinks:true,
acceptedFiles: '.jpg,.jpeg,.JPEG,.JPG,.png,.PNG',
init: function (data) {
this.on("sending",function(file, xhr, formData){
file.token = Math.random().toString(36).substr(2,9);
formData.append("token",file.token);
formData.append("type", file.type);
formData.append("size", file.size);
});
this.on("complete", function (file) {
console.log(file);
});
this.on("successmultiple", function(file, response) {
console.log(file);
});
this.on("errormultiple", function(file, response) {
console.log(file);
});
this.on("removedfile",function(file){
var token = file.token;
$.ajax({
type:"post",
data:{token:token},
url: admin_url+'remove_image',
cache:false,
dataType: 'json',
success: function(res){
}
});
});
},
dictDefaultMessage: "<div class='drag-icon-cph'><i class='material-icons'>touch_app</i></div><h5>Plaats hier bestanden om te uploaden</h5>",
dictRemoveFile : "Bestand verwijderen"
});
PHP (Codeigniter)
public function add_image($type, $rel_id = 0){
if (isset($_FILES['file']['name']) && $_FILES['file']['name'] != '') {
$path = getcwd() . '/uploads/';
$tmpFilePath = $_FILES['file']['tmp_name'];
if (!empty($tmpFilePath) && $tmpFilePath != '') {
$path_parts = pathinfo($_FILES["file"]["name"]);
$extension = $path_parts['extension'];
$extension = strtolower($extension);
$allowed_extensions = array(
'jpg',
'jpeg',
'png'
);
if (!in_array($extension, $allowed_extensions)) {
set_alert('warning', 'PHP blocked file extention');
return false;
}
$filename = uniqid(rand(), true).'.'.$extension;
$newFilePath = $path . '/' . $filename;
// Upload the file into the upload dir
if (move_uploaded_file($tmpFilePath, $newFilePath)) {
$CI =& get_instance();
$config = array();
$config['image_library'] = 'gd2';
$config['source_image'] = $newFilePath;
$config['new_image'] = $filename;
$config['maintain_ratio'] = true;
$CI->load->library('image_lib', $config);
$CI->image_lib->initialize($config);
$CI->image_lib->resize();
$CI->image_lib->clear();
$data = array(
'rel_type' => $type,
'rel_id' => $rel_id,
'attachment_key' => $this->input->post('token'),
'file_name' => $filename,
'filetype' => $this->input->post('type'),
'size' => $this->input->post('size'),
'dateadded' => date('Y-m-d H:i:s')
);
$id = $this->back_model->add_image($data);
if($id != ''){
array_push($_SESSION['tmp_image'],$id);
}
unlink($newFilePath);
}
}
}
}
The folder uploads is created and for security i added a empty index.html file.
.htaccess is standard Codeigniter