Upload file using Guzzle 6 to API endpoint - php

Question

I am able to upload a file to an API endpoint using Postman.
I am trying to translate that into uploading a file from a form, uploading it using Laravel and posting to the endpoint using Guzzle 6.
Screenshot of how it looks in Postman (I purposely left out the POST URL)
Below is the text it generates when you click the "Generate Code" link in POSTMAN:
POST /api/file-submissions HTTP/1.1
Host: strippedhostname.com
Authorization: Basic 340r9iu34ontoeioir
Cache-Control: no-cache
Postman-Token: 6e0c3123-c07c-ce54-8ba1-0a1a402b53f1
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
----WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="FileContents"; filename=""
Content-Type:
----WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="FileInfo"
{ "name": "_aaaa.txt", "clientNumber": "102425", "type": "Writeoff" }
----WebKitFormBoundary7MA4YWxkTrZu0gW
Below is controller function for saving the file and other info. The file uploads correctly, I am able to get the file info.
I think the problem I am having is setting the multipart and headers array with the correct data.
public function fileUploadPost(Request $request)
{
$data_posted = $request->input();
$endpoint = "/file-submissions";
$response = array();
$file = $request->file('filename');
$name = time() . '_' . $file->getClientOriginalName();
$path = base_path() .'/public_html/documents/';
$resource = fopen($file,"r") or die("File upload Problems");
$file->move($path, $name);
// { "name": "test_upload.txt", "clientNumber": "102425", "type": "Writeoff" }
$fileinfo = array(
'name' => $name,
'clientNumber' => "102425",
'type' => 'Writeoff',
);
$client = new \GuzzleHttp\Client();
$res = $client->request('POST', $this->base_api . $endpoint, [
'auth' => [env('API_USERNAME'), env('API_PASSWORD')],
'multipart' => [
[
'name' => $name,
'FileContents' => fopen($path . $name, 'r'),
'contents' => fopen($path . $name, 'r'),
'FileInfo' => json_encode($fileinfo),
'headers' => [
'Content-Type' => 'text/plain',
'Content-Disposition' => 'form-data; name="FileContents"; filename="'. $name .'"',
],
// 'contents' => $resource,
]
],
]);
if($res->getStatusCode() != 200) exit("Something happened, could not retrieve data");
$response = json_decode($res->getBody());
var_dump($response);
exit();
}
The error I am receiving, screenshot of how it displays using Laravel's debugging view:

Answer 1

The way you are POSTing data is wrong, hence received data is malformed.
Guzzle docs:
The value of multipart is an array of associative arrays, each
containing the following key value pairs:
name: (string, required) the form field name
contents:(StreamInterface/resource/string, required) The data to use in the
form element.
headers: (array) Optional associative array of custom headers to use with the form element.
filename: (string) Optional
string to send as the filename in the part.
Using keys out of above list and setting unnecessary headers without separating each field into one array will result in making a bad request.
$res = $client->request('POST', $this->base_api . $endpoint, [
'auth' => [ env('API_USERNAME'), env('API_PASSWORD') ],
'multipart' => [
[
'name' => 'FileContents',
'contents' => file_get_contents($path . $name),
'filename' => $name
],
[
'name' => 'FileInfo',
'contents' => json_encode($fileinfo)
]
],
]);

Answer 2

$body = fopen('/path/to/file', 'r');
$r = $client->request('POST', 'http://httpbin.org/post', ['body' => $body]);
http://docs.guzzlephp.org/en/latest/quickstart.html?highlight=file

Answer 3

In Laravel 8 with guzzle I am using this:
The idea is that you are reading the file with fread or file_get_content, then you can use the Laravel getPathname() which points to the file in /tmp
$response = $this
->apiClient
->setUserKey($userToken)
->post(
'/some/url/to/api',
[
'multipart' => [
'name' => 'avatar',
'contents' => file_get_contents($request->file('avatar')->getPathname()),
'filename' => 'avata.' . $request->file('avatar')->getClientOriginalExtension()
]
]
);