File Upload CI4

File Upload

public function upload() {
    $file = $this->request->getFile("avatar");

    // Validate
    if (!$file->isValid() || $file->hasMoved()) {
        throw new RuntimeException($file->getErrorString());
    }

    // Validate size and type
    $rules = [
        "avatar" => [
            "label"  => "Avatar",
            "rules"  => "uploaded[avatar]|is_image[avatar]|max_size[avatar,2048]|ext_in[avatar,jpg,png,webp]",
        ],
    ];

    if (!$this->validate($rules)) {
        return redirect()->back()->with("errors", $this->validator->getErrors());
    }

    // Move to uploads folder
    $newName = $file->getRandomName();
    $file->move(WRITEPATH . "uploads", $newName);

    // Save path to database
    model(UserModel::class)->update(auth()->id(), ["avatar" => $newName]);

    return redirect()->back()->with("success", "Uploaded: " . $newName);
}