HTTP Client Post - Multipart with multidimensional array body

[codoffer]

• Laravel Version: 9.27,
• PHP Version: 8.1.7
• Database Driver & Version: MySQL

Description:

I am getting errors with attaching a file and body with the multi-dimensional array. I want to send multi-dimensional array with attachments files (with attachment field).

Same issue was opened before but closed without solution.

#37174

Steps To Reproduce:

NOT WORKING

use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\File;

$path = storage_path('file.txt');

Http::acceptJson()
    ->attach('attachments[]', File::get($path), File::basename($path))
    ->post($destination, [
        'name' => 'John Smith',
        'providers' => [1,2,3]
]);

with throw InvalidArgumentException with message 'A 'contents' key is required'
whereas will be just fine

WORKING

Http::acceptJson()
    ->attach('attachments[]', File::get($path), File::basename($path))
    ->post($destination, [
        'name' => 'John Smith',
        'providers' => '1'
]);

[driesvints]

You're trying to post an array (providers) in a multipart HTTP request. That doesn't work. You're not sending JSON here but file parts.

[codoffer]

I have tried with/without JSON also. But it's not accepting.

[driesvints]

You can't send files over JSON. You need multipart for that.

[codoffer]

I want to send

{
"reply": {
"body": "string",
},
"attachments": [
"string"
]
}

attachments must upload the entire payload as multipart/form-data content-type and want to specify each parameter as form-data together with attachments[] as files.

I am not sure, How to handle this.