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+--- Forum: General Help (https://forum.codeigniter.com/forumdisplay.php?fid=24)
+--- Thread: upload image (/showthread.php?tid=65167)
upload image - davy_yg - 05-09-2016
Hello,
I trying to practice uploading image:
http://www.codersmount.com/2012/11/upload-image-and-create-multiple-thumbnail-sizes-in-codeigniter/
I don't think it works:
views/main.php
PHP Code:
<?php
$image = array(
'name' => 'userfile',
'id' => 'userfile',
);
$submit = array(
'name' => 'submit',
'id' => 'submit',
'value' => 'Upload'
);
?>
<?php echo form_open_multipart('upload/upload_image', 'id=upload_file'); ?>
<?php echo form_upload($image); ?>
<?php echo form_submit($submit); ?>
<?php echo form_close(); ?>controllers/upload.php
PHP Code:
class Upload extends CI_Controller{
public function index()
{
$this->load->view('main');
}
public function upload_image(){
$this->upload_model->do_upload(); //execute the upload function
}
}
models/upload_model.php
PHP Code:
<?php
class User_model extends CI_Model{
var $original_path;
var $resized_path;
var $thumbs_path;
//initialize the path where you want to save your images
function __construct(){
parent::__construct();
//return the full path of the directory
//make sure these directories have read and write permessions
$this->original_path = realpath(APPPATH.'../uploads/original');
$this->resized_path = realpath(APPPATH.'../uploads/resized');
$this->thumbs_path = realpath(APPPATH.'../uploads/thumbs');
}
function do_upload(){
$this->load->library('image_lib');
$config = array(
'allowed_types' => 'jpg|jpeg|gif|png', //only accept these file types
'max_size' => 2048, //2MB max
'upload_path' => $this->original_path //upload directory
);
$this->load->library('upload', $config);
$image_data = $this->upload->data(); //upload the image
//your desired config for the resize() function
$config = array(
'source_image' => $image_data['full_path'], //path to the uploaded image
'new_image' => $this->resized_path, //path to
'maintain_ratio' => true,
'width' => 128,
'height' => 128
);
//this is the magic line that enables you generate multiple thumbnails
//you have to call the initialize() function each time you call the resize()
//otherwise it will not work and only generate one thumbnail
$this->image_lib->initialize($config);
$this->image_lib->resize();
$config = array(
'source_image' => $image_data['full_path'],
'new_image' => $this->thumbs_path,
'maintain_ratio' => true,
'width' => 36,
'height' => 36
);
//here is the second thumbnail, notice the call for the initialize() function again
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
}
I also get this error message:
http://localhost/upload/
Fatal error: Call to undefined function form_open_multipart() in C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\upload\application\views\main.php on line 14
A PHP Error was encountered
Severity: Error
Message: Call to undefined function form_open_multipart()
Filename: views/main.php
Line Number: 14
Backtrace:
Can anyone help me fix this error?
Thanks in advance.
RE: upload image - JayAdra - 05-10-2016
Sounds like you need to load the form_helper:
http://www.codeigniter.com/userguide3/helpers/form_helper.html
RE: upload image - davy_yg - 05-10-2016
I already load:
controllers/upload.php
PHP Code:
<?php
class Upload extends CI_Controller{
public function index()
{
$this->load->helper('form');
$this->load->view('main');
}
public function upload_image(){
$this->upload_model->do_upload(); //execute the upload function
}
}
?>models/upload_model.php
PHP Code:
<?php
class User_model extends CI_Model{
var $original_path;
var $resized_path;
var $thumbs_path;
//initialize the path where you want to save your images
function __construct(){
parent::__construct();
//return the full path of the directory
//make sure these directories have read and write permessions
$this->original_path = realpath(APPPATH.'../uploads/original');
$this->resized_path = realpath(APPPATH.'../uploads/resized');
$this->thumbs_path = realpath(APPPATH.'../uploads/thumbs');
}
function do_upload(){
$this->load->library('image_lib');
$config = array(
'allowed_types' => 'jpg|jpeg|gif|png', //only accept these file types
'max_size' => 2048, //2MB max
'upload_path' => $this->original_path //upload directory
);
$this->load->library('upload', $config);
$image_data = $this->upload->data(); //upload the image
//your desired config for the resize() function
$config = array(
'source_image' => $image_data['full_path'], //path to the uploaded image
'new_image' => $this->resized_path, //path to
'maintain_ratio' => true,
'width' => 128,
'height' => 128
);
//this is the magic line that enables you generate multiple thumbnails
//you have to call the initialize() function each time you call the resize()
//otherwise it will not work and only generate one thumbnail
$this->image_lib->initialize($config);
$this->image_lib->resize();
$config = array(
'source_image' => $image_data['full_path'],
'new_image' => $this->thumbs_path,
'maintain_ratio' => true,
'width' => 36,
'height' => 36
);
//here is the second thumbnail, notice the call for the initialize() function again
$this->image_lib->initialize($config);
$this->image_lib->resize();
}
}
?>A PHP Error was encountered
Severity: Notice
Message: Undefined property: Upload::$upload_model
Filename: controllers/upload.php
Line Number: 15
Backtrace:
File: C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\upload\application\controllers\upload.php
Line: 15
Function: _error_handler
File: C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\upload\index.php
Line: 315
Function: require_once
Fatal error: Call to a member function do_upload() on null in C:\Program Files (x86)\EasyPHP-Devserver-16.1\eds-www\upload\application\controllers\upload.php on line 15
A PHP Error was encountered
Severity: Error
Message: Call to a member function do_upload() on null
Filename: controllers/upload.php
Line Number: 15
Backtrace:
upload.php
Line 15: $this->upload_model->do_upload(); //execute the upload function
That's the error! Can anyone help me fix the error?
RE: upload image - JayAdra - 05-10-2016
There are a number of things wrong here.
I think you need to learn the basics of PHP and of CI and practise debugging yourself.
The error you're getting (if you read it) clearly tells you the problem and where to find it.
"$upload_model" is an undefined property on line 15. So on that line you see that you're calling "$this->upload_model->do_upload();", but CI doesn't know what that model is, because you haven't loaded it.
Also, in your "upload_model.php" file, the class name is "User_model" so you need to update that to conform.
There's a good chance after fixing those things, you'll have other errors. If so, read them carefully and see if you can find the problem yourself.