Custom Wordpress image size not showing in 3.5 Media Manager

Question

I have a theme which uses add_image_size to define several custom image sizes. These 5 image sizes used to show up in the Wordpress 3.4 media manager when inserting an image into a post but they no longer show up in the new Wordpress 3.5 Media Manager. In fact, the only image size options i get when I try to "Add Media" to a post are Thumbnail (100x100) and Full Size (3260x988). Obviously my theme settings are not overriding the default media settings in Settings >> Media. Here is the code from my functions.php file:

function custom_theme_support() {
  add_theme_support('post-thumbnails');
  set_post_thumbnail_size(180, 120, true);
  add_image_size( 'hero-desktop-2x', 3200, 800, true);
  add_image_size( 'hero-desktop', 1600, 400, true);
  add_image_size( 'hero-mobile-2x', 1534, 800, true);
  add_image_size( 'hero-mobile', 767, 400, true);
}

add_action('after_setup_theme','custom_theme_support');

So, my question is what do i need to do to make my theme override the Wordpress Admin settings in Wordpress 3.5?

Curlicue

I'm also having similar issues, however in my case it seems to be down to wordpress failing to create the thumbnails in the first place. For love nor money I can't get PHP to output any errors, same thing happens with other themes and I've deactivated all plugins. Don't know what to debug. – Sikora

When i upload an image wordpress creates all 5 custom image sizes plus the 100x100 thumb that is defined in the admin settings. – Curlicue

damn, in that case my problem is unrelated. i'll go post my own :) – Sikora

Answer 1

When I had similar problems in the past I had to add the images with the image_size_names_choose filter. That was pre-WordPress 3.5 though; you say it was working on 3.4, so I don't know if it'll help, but it's worth a try.

There's an example in step two of this tutorial.

Wapiti

Thanks Hobo, that wes exactly what i needed to fix my problem. – Curlicue

Answer 2

I've used the following code, which seems to work.

Note: you must regenerate all your thumbnail for this size to appear retroactively on already existing images:

function setup_image_sizes() {
    if( function_exists('add_theme_support') ) {
        add_theme_support('post-thumbnails');
    }
    if ( function_exists( 'add_image_size' ) ) {
        add_image_size( 'custom-image', 576, 320, true );
    }

    function my_image_sizes($sizes){
        $custom_sizes = array(
            'custom-image' => 'Custom Image'
        );
        return array_merge( $sizes, $custom_sizes );
    }

    add_filter('image_size_names_choose', 'my_image_sizes');
}

add_action( 'after_setup_theme', 'setup_image_sizes' );

Derwood

Answer 3

Open the php.ini file (for me in directory C:\xampp\php) in a text editor and added extension=php_gd.dll then restart your server and clear browser cache .

Pretermit