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I am trying to get rid of the following error in debug:

Notice: register_sidebar was called <strong>incorrectly</strong>. 
No <code>id</code> was set in the arguments array for the "Header" sidebar.

So when I register that sidebar I added the id parameter like so:

register_sidebar(array(
    'id' => 'header-sidebar',
    'name' => 'Header',
    'before_widget' => '<div class="widget">',
    'after_widget' => '</div>',
    'before_title' => '<h3 class="widget-title">',
    'after_title' => '</h3>',
));

Now no matter if I use the name field or the id field dynamic_sidebar always returns false.

I've tried:

dynamic_sidebar( 'Header' );

and

dynamic_sidebar( 'header-sidebar' );

My understand is both of the above should work. Note if I comment out the id parameter in the register_sidebar call and use dynamic_sidebar( 'Header' ); everything works fine. What am I missing?

This is WP 4.2.2.

So per these directions: List all sidebar names? I was able to list all the sidebar names and when I set the id parameter with register_sidebar the id in the list of names changes. The specific sidebar I'm playing with now is 'sidebar-5' before setting an id and 'sidebar-jsp' after. Once the id field is set I can not use dynamic_sidebar with the name 'Sidebar', the original id 'sidebar-5' or the new id 'sidebar-jsp'.

Per s_ha_dum's suggestion I wrapped a single sidebar inside a function so that I could make it happen after 'widgets_init'. This did not work.

function register_header_sidebar_jsp() {
    register_sidebar(array(
        'name' => 'Sidebar',
        'id' => 'sidebar-jsp',
        'before_widget' => '<div class="widget">',
        'after_widget' => '</div>',
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ));
}
add_action( 'widgets_init', 'register_header_sidebar_jsp' );

I'm calling it right now with:

<?php var_dump(dynamic_sidebar('sidebar-jsp')); ?>

I'm not sure what's going on but I don't have all day to mess with this. Thanks for your suggestions everyone.

1

Your code works when I test it. I can only assume that the registration code is being hooked into the system too early or too late. register_sidebar() should be hooked on widgets_init per the Codex. Therefore:

function register_header_sidebar_wpse_190618() {
  register_sidebar(
    array(
      'id' => 'header-sidebar',
      'name' => 'Header',
      'before_widget' => '<div class="widget">',
      'after_widget' => '</div>',
      'before_title' => '<h3 class="widget-title">',
      'after_title' => '</h3>',
    )
  );
}
add_action( 'widgets_init', 'register_header_sidebar_wpse_190618' );
  • I'm glad it works for someone. – JSP Jun 5 '15 at 21:06
  • Something is broken about your site. You add a widget to the sidebar right? Or does it not show up on the back end at all? – s_ha_dum Jun 5 '15 at 21:15
  • Yes, everything works fine if I don't specify an 'id' parameter. I only added the 'id' parameter to get rid of debug error messages but this is clearly worse. It shows up in the backend under Appearance > Widgets and again is clearly 'registered'. But again dynamic_sidebar always returns false when I add an id parameter to register_sidebar. – JSP Jun 5 '15 at 21:57
  • Is there already a sidebar with that I'd? – s_ha_dum Jun 5 '15 at 22:04
  • I'd qualify this as a bug. @Tosho has a good answer that will most likely provide more insight here... – Eddie B Aug 1 '15 at 16:10
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<?php dynamic_sidebar( 'new-header-sidebar' ); ?>

register_sidebar( array(
    'name' => __( 'Header', 'theme-slug' ),
    'id' => 'new-header-sidebar',
) );

You may have a I.D conflict so try changing the I.D

  • No idea why but this did not work for me. I'm not sure if the suggestion was more about using __() or removing the other parameters but I copy and pasted this with no luck. – JSP Jun 5 '15 at 20:56
  • Here's the full code which is tested and works wordpress.stackexchange.com/a/190611/9884 – Brad Dalton Jun 6 '15 at 4:47
  • 1
    Please don't just dump some code, and add some explanation. Code-only answers are not good, I'm afraid. – Mayeenul Islam Jun 6 '15 at 10:48
  • I did add the explanation as a comment. I think you must have missed that. – Brad Dalton Jun 6 '15 at 14:11
-1

Try starting the id field value with 'sidebar'.

If that doesn't work, the order shouldn't matter, but try following the codex example:

register_sidebar( array(
    'name' => __( 'Main Sidebar', 'theme-slug' ),
    'id' => 'sidebar-1',
    'description' => __( 'show on all posts and pages', 'theme-slug' ),
    'before_widget' => '<li id="%1$s" class="widget %2$s">',
    'after_widget'  => '</li>',
    'before_title'  => '<h2 class="widgettitle">',
    'after_title'   => '</h2>',
) );

Also try not using the word 'header' in the id field.

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