[wp-trac] [WordPress Trac] #16203: Modifications of media doesn't generate alternatives added by add_image_size()

[WordPress Trac]

#16203: Modifications of media doesn't generate alternatives added by
add_image_size()
----------------------------+------------------------------
 Reporter:  andreaswedberg  |       Owner:
     Type:  defect (bug)    |      Status:  new
 Priority:  normal          |   Milestone:  Awaiting Review
Component:  Media           |     Version:  3.0.4
 Severity:  normal          |  Resolution:
 Keywords:  add_image_size  |
----------------------------+------------------------------

Comment (by aut0poietic):

 Just to add more information here: `add_image_size()` only temporarily
 adds the image size to the `$_wp_additional_image_sizes` array ( in `wp-
 includes/media.php` ).

 The admin panel does not use this array, and instead uses the options
 `"{$size}_crop"`, `"{$size}_size_w"` and `"{$size}_size_h"` ( line 633 &
 644 of `wp-admin/includes/image-edit.php` ). If those options don't exist,
 the theme/plugin added image size will not be updated.

 I've worked around the issue by calling add_option() for these option
 names at the same time I add the image size:

 {{{
 if ( function_exists( 'add_theme_support' ) )
 {
         add_theme_support( 'post-thumbnails' ) ;
         add_image_size( 'my-custom-thumb', 478, 478, true );

         // add_image_size() edit patch
         add_option( 'my-custom-thumb_crop' , true  , '' , 'yes' ) ;
         add_option( 'my-custom-thumb_size_w' , 478 , '' , 'yes' ) ;
         add_option( 'my-custom-thumb_size_h' , 478 , '' , 'yes' ) ;
 }
 }}}

 I'm not sure what the repercussions would be if similar code was added to
 `add_image_size()`.

-- 
Ticket URL: <http://core.trac.wordpress.org/ticket/16203#comment:1>
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