Components. Send request with file via vue.http.post() - laravel

Question

I have vuejs2 component on page (single file component). It's a simple bootstrap modal window with one file input. I only need to upload one file (no mutlifile upload or etc.)
What is in file:
<template>
<div class="modal fade" id="upload-file-modal" tabindex="-1" role="dialog">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title">Upload file</h4>
</div>
<form id="app-file-upload-form" name="appFileUploadForm" #submit.prevent="uploadAppFile" novalidate enctype="multipart/form-data">
<div class="modal-body">
<div class="form-group">
<label for="app-file-fileinput">File</label>
<input type="file" name="file" id="app-file-fileinput" class="form-control" v-el="file" #change="attachFile">
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<button type="submit" class="btn btn-primary">Upload</button>
</div>
</form>
</div>
</div>
</div>
<script>
export default {
data() {
return {
file: ''
}
},
methods: {
attachFile(e) {
var files = e.target.files || e.dataTransfer.files;
if (!files.length)
return;
this.file = files[0];
},
uploadAppFile() {
console.log(this.file);
Vue.http.post('/api/v1/apps/' + this.appId + '/files', { file: this.file}).then((response) => {
console.log(response);
}, (response) => {
console.log(response);
});
}
}
}
So i have laravel controller for handle it.
public function upload(Request $request)
{
$attachedFile = $request->file;
return response()->json($request->all());
}
I put return response->json() for kinda debug this. When i attach file, file attaching to component(model?) field and not empty. But when vue.http.post happening the file comes to empty object.
First is console.log(file)
Second is server response.
I also tried with FormData()... it didn't work.
ps: i cut version field from code.

Answer 1

After few more times with formdata i got file upload working. Just put variable inside method.
uploadAppFile() {
let data = new FormData();
data.append('file', this.file);
Vue.http.post('/api/v1/apps/' + this.appId + '/files', data).then((response) => {});
}