Upgrade Working with Uploaded Files

What has been changed

  • The functionality of the file upload has changed a lot. You can now check if the file got uploaded without errors and moving / storing files is simpler.

Upgrade Guide

In CI4 you access uploaded files with $file = $this->request->getFile('userfile'). From there you can validate if the file got uploaded successfully with $file->isValid(). To store the file you could use $path = $this->request->getFile('userfile')->store('head_img/', 'user_name.jpg'); This will store the file in writable/uploads/head_img/user_name.jpg.

You have to change your file uploading code to match the new methods.

Code Example

Codeigniter Version 3.11

<?php

class Upload extends CI_Controller {

    public function __construct()
    {
        parent::__construct();
        $this->load->helper(array('form', 'url'));
    }

    public function index()
    {
        $this->load->view('upload_form', array('error' => ' ' ));
    }

    public function do_upload()
    {
        $config['upload_path']   = './uploads/';
        $config['allowed_types'] = 'png|jpg|gif';
        $config['max_size']      = 100;
        $config['max_width']     = 1024;
        $config['max_height']    = 768;

        $this->load->library('upload', $config);

        if ( ! $this->upload->do_upload('userfile'))
        {
            $error = array('error' => $this->upload->display_errors());

            $this->load->view('upload_form', $error);
        }
        else
        {
            $data = array('upload_data' => $this->upload->data());

            $this->load->view('upload_success', $data);
        }
    }
}

Codeigniter Version 4.x

<?php

namespace App\Controllers;

class Upload extends BaseController {

    public function index()
    {
        echo view('upload_form', ['error' => ' ']);
    }

    public function do_upload()
    {
        $this->validate([
            'userfile' => 'uploaded[userfile]|max_size[userfile,100]'
                           . '|mime_in[userfile,image/png,image/jpg,image/gif]'
                           . '|ext_in[userfile,png,jpg,gif]|max_dims[userfile,1024,768]'
        ]);

        $file = $this->request->getFile('userfile');

        if (! $path = $file->store()) {
            echo view('upload_form', ['error' => "upload failed"]);
        } else {
            $data = ['upload_file_path' => $path];

            echo view('upload_success', $data);
        }
    }
}