[wp-trac] [WordPress Trac] #26111: wp_localize_script array from callback for performance

[WordPress Trac]

#26111: wp_localize_script array from callback for performance
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 Reporter:  ciantic      |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Awaiting Review
Component:  Performance  |     Version:  2.6
 Severity:  normal       |  Resolution:
 Keywords:  close        |
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Comment (by ciantic):

 Neat that it is possible, however this is not very developer friendly way.

 Adding a callback to `wp_localize_script` would make this more usable and
 provide better performance benefit over time if people start to use it.

 Replying to [comment:2 SergeyBiryukov]:
 > > WordPress could then run the callback ''only if the script e.g.
 date_18n is enqueued''.
 >
 > You can check if the script is enqueued using
 [http://codex.wordpress.org/Function_Reference/wp_script_is
 wp_script_is()]:
 > {{{
 > function date_i18n_callback() {
 >       ...
 >       return array( ... );
 > }
 >
 > function localize_scripts_26111() {
 >       if ( wp_script_is( 'date_i18n' ) ) {
 >               wp_localize_script( 'date_i18n', 'DATE_I18N',
 date_i18n_callback() );
 >       }
 > }
 > add_action( 'wp_enqueue_scripts', 'localize_scripts_26111', 11 );
 > }}}
 > `date_i18n_callback()` will only run if `'date_i18n'` is enqueued. No
 changes to `wp_localize_script()` are needed.

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Ticket URL: <http://core.trac.wordpress.org/ticket/26111#comment:3>
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