How to get the URL for the re sized image

Question

I have built a custom form in Drupal 7. The form has a file type field which allows the user to upload an image. I'm using the below code in the submit function to save and re size the image:

function adddeals_submit($form, &$form_state){
    global $user;

    $file = $form_state['storage']['file'];
    // We are done with the file, remove it from storage.
    unset($form_state['storage']['file']);
    // Make the storage of the file permanent
    $file->status = FILE_STATUS_PERMANENT;
    // Save file status.
    file_save($file);
    //get the url for the saved file
    $url = file_create_url($file->uri);
    echo $url;
    echo '<br>';

    $destination = 'public://ImageThumbnail';
    $img = image_load($file->uri);
    image_resize($img, 200, 200);
    $result = image_save($img,$destination);
    echo $result;


    exit;
  }

The image is re-sizing and saving correctly as the $result is printing 1. I need to know how to get the URL for the re sized image. Am I missing something?

Thanks for you help.

Answer 1

I wouldn't use your approach because as you can see by yourself now you have no reference to the resized image, what I would do is use image_style_path :

function adddeals_submit($form, &$form_state){
    global $user;

    $file = $form_state['storage']['file'];
    unset($form_state['storage']['file']);
    $file->status = FILE_STATUS_PERMANENT;
    file_save($file);
    $url = file_create_url($file->uri);
    // this
    $derivative_uri = image_style_path($your_style, $file->uri);
    $url = image_style_create_derivative(image_style_load('your_style'), $file->uri, $derivative_uri);
}

This creates a folder in your files folder with your style name and stores the image there, then wherever in your code you want to get that image you just reutilize this code:

$derivative_uri = image_style_path($your_style, $file->uri);
$url = image_style_create_derivative(image_style_load('your_style'), $file->uri, $derivative_uri);

Drupal checks if an image is there and gives you back the $url, if it's not there it creates the image applying your style.

P.S. you need to register your style in configuration and once the style folder is created check it's permission settings.