Help with thumbnail creation using image manipulation class

Help with thumbnail creation using image manipulation class - Printable Version

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+--- Thread: Help with thumbnail creation using image manipulation class (/showthread.php?tid=52518)

Help with thumbnail creation using image manipulation class - El Forum - 06-14-2012

[eluser]Dandy_andy[/eluser]
I am a bit stuck with image manipulation and thumbnail generation. I have a controller that process a file uploaded and is supposed to do the following:-

1. SAVE THE IMAGE TO A DIRECTORY AFTER RENAMING IT ($string)
2. RESIZE THE IMAGE
3. CREATE A THUMBNAIL OF THE RESIZED IMAGE SO THAT TWO IMAGES SHOULD EXIST IN THE DIRECTORY.

The script below works as far as creating the directory and the new re-sized image, but I can't seem to then create a thumbnail of the resized image. Any ideas?

Code:
//upload photo file

 public function upload_file() {

  $this->load->model('image_file');

  $string = $this->image_file->string_generate();

  $set_image_path = $this->image_file->set_image_path($string);

  $config['upload_path'] = $set_image_path;

  $config['allowed_types'] = 'gif|jpg|jpeg|png';

  $config['max_size'] = '4000';

  $config['max_width'] = '6000';

  $config['max_height'] = '4000';

  $config['file_name'] = $string;

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

  //write the data to the photo db

  $mem_id = $this->session->userdata('mem_id');

  $this->image_file->write_imagedata($mem_id, $string, $set_image_path);

  //create the directory

  mkdir($set_image_path, 0644, true);

  //do upload & process image (rezize and rename)

  $this->upload->do_upload('userphoto');

  $results = $this->upload->data();

  $config['image_library'] = 'gd2';

  $config['source_image'] = $set_image_path.$string;

  $config['create_thumb'] = FALSE;

  $config['maintain_ratio'] = TRUE;

  $config['quality'] = 50;

  $config['width'] = 800;

  $config['height'] = 600;

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

  $this->image_lib->resize();

  $this->image_lib->clear();

  //create thumbnail

  $config['image_library'] = 'gd2';

  $config['source_image'] = $set_image_path.$string;

  $config['create_thumb'] = TRUE;

  $config['maintain_ratio'] = TRUE;

  $config['quality'] = 50;

  $config['width'] = 200;

  $config['height'] = 150;

  $this->image_lib->resize();

It seems to get as far as the //create thumbnail but doesn't process anything beyond this.

Help with thumbnail creation using image manipulation class - El Forum - 06-14-2012

[eluser]PhilTem[/eluser]
It probably goes farther than line "//create thumbnail" however, the config of the library hasn't really changed so it will process the image with the settings from above "//create thumbnail"

Try

Code:
// create thumbnail

/* Do all your config from above here */

$this->image_lib->initialize($config); // new line to initialize library with new config

$this->image_lib->resize();

That's an uncommented standard "feature" of every CI library. I don't know why they didn't add it to the docs.

Help with thumbnail creation using image manipulation class - El Forum - 06-14-2012

[eluser]Dandy_andy[/eluser]
Thanks for the reply. I tried this and I have also tried using a different config array for the second image process function but still the same thing... Still scratching my head :O)

Help with thumbnail creation using image manipulation class - El Forum - 06-14-2012

[eluser]Dandy_andy[/eluser]
For anyone interested and who has had the same problem, I finally figured out a way to do this. I moved the thumbnail generation before the main image resize and for some reason it works that way around:-

Code:
//upload photo file

 public function upload_file() {

  $this->load->model('image_file');

  $string = $this->image_file->string_generate();

  $set_image_path = $this->image_file->set_image_path($string);

  $config['upload_path'] = $set_image_path;

  $config['allowed_types'] = 'gif|jpg|jpeg|png';

  $config['max_size'] = '4000';

  $config['max_width'] = '6000';

  $config['max_height'] = '4000';

  $config['file_name'] = $string;

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

  //write the data to the photo db

  $mem_id = $this->session->userdata('mem_id');

  $this->image_file->write_imagedata($mem_id, $string, $set_image_path);

  //create the directory

  mkdir($set_image_path, 0644, true);

  //do upload & process image (rezize and rename)

  $this->upload->do_upload('userphoto');

  $results = $this->upload->data();

  $this->load->library('image_lib');

  $config['image_library'] = 'gd2';

  $config['source_image'] = $set_image_path.$string;

  $config['create_thumb'] = TRUE;

  $config['maintain_ratio'] = TRUE;

  $config['quality'] = 50;

  $config['width'] = 200;

  $config['height'] = 150;

  $this->image_lib->initialize($config);

  $this->image_lib->resize();

  $this->image_lib->clear();

  $config['image_library'] = 'gd2';

  $config['source_image'] = $set_image_path.$string;

  $config['create_thumb'] = FALSE;

  $config['maintain_ratio'] = TRUE;

  $config['quality'] = 50;

  $config['width'] = 800;

  $config['height'] = 600;

  $this->image_lib->initialize($config);

  $this->image_lib->resize();

  $this->image_lib->clear();

  $error = $this->upload->display_errors('', '');

  $this->session->set_flashdata('error', $error);

  if (!$error) {

   $this->load->library('Notificationmssgs');

   $notification = $this->notificationmssgs->notifications();

   $this->session->set_flashdata('message', $notification[3]);

   }