Dynamic Sidebars On Multiple Subpages

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I am building a site in WordPress. It has multiple subpages, many of which require different sidebars. So, I have a widgetized theme and I have also created a few sidebar widgets.

I have written a conditional statement to show different sidebars on different pages. However, one widgetized sidebar displays on almost all pages despite the conditional statement.

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The sidebar that is appearing on the desired page can be seen here: http://www.africanhealthleadership.org/about/approach/

The subpage that should have a different sidebar is under Knowledge Resources>Research

The code is as follows. I am a total PHP spazz, so I likely did something silly. I have tried single quotes around dynamic_sidebar(2) but that did not work.

Thank you for any help. 

<?php 
     if ( is_subpage('approach') ) {
     if (!function_exists ( dynamic_sidebar(1) ) ) ; 
}
    elseif ( is_subpage('research')) {
    if (!function_exists( dynamic_sidebar(2)) || !dynamic_sidebar( "Sidebar2") );
    }
?>
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3 comments

  1. More easy & elegant (higher maintainability): 

    <?php 
// Your sidebar should have the wp_meta action hook
wp_meta();

// in ex. your functions.php
function my_sidebar_content() {
    // "About" Page
    if ( is_page('about') ) {
        // If some widget is added via Admin > Design > Widgets
        if ( is_active_sidebar( 'widgets-sidebar-default' ) ) {
            // Display Widgets
            dynamic_sidebar( 'widgets-sidebar-default' );
        }
        // Default Content before Widgets were added
        else {
            _e('default static content', TEXTDOMAIN);
        }
    }
    // "Links" Page
    elseif ( is_page('links') ) {
        if ( is_active_sidebar( 'widgets-sidebar-links' ) ) {
            dynamic_sidebar( 'widgets-sidebar-links' );
        }
        else {
            _e('default static content', TEXTDOMAIN);
        }
    }
}
add_action( 'wp_meta', 'my_sidebar_content', 10 );

# ===================================================
// OR:
wp_meta();

// functions.php
function load_my_sidebars() {
    // "About" Page
    if ( is_page('about') ) {
        get_template_part( 'sidebar_content', 'default' );
    }
    // "Links" Page
    elseif ( is_page('links') ) {
        get_template_part( 'sidebar_content', 'links' );
    }
}
add_action( 'wp_meta', 'load_my_sidebars', 10 );

// in sidebar_content-default.php
    // If some widget is added via Admin > Design > Widgets
    // You can add any static content right here before the widgets
    if ( is_active_sidebar( 'widgets-sidebar-default' ) ) {
        // Display Widgets
        dynamic_sidebar( 'widgets-sidebar-default' );
    }
    // Default Content before Widgets were added
    else {
        _e('default static content', TEXTDOMAIN);
    }
    // You can add any static content right here after the widgets

// in sidebar_content-links.php
    if ( is_active_sidebar( 'widgets-sidebar-links' ) ) {
        dynamic_sidebar( 'widgets-sidebar-links' );
    }
    else {
        _e('default static content', TEXTDOMAIN);
    }
?>

  2. I don’t know why anybody checks whether dynamic_sidebar exists. It’s been around for 9 major releases now. I really hope you’re not developing for 2.1 or lower. Try this:

    if( is_page('approach') )
  dynamic_sidebar(1);
elseif( is_page('research') )
  dynamic_sidebar(2);

    If you know the specific page you want to use, don’t bother with that subpage junk. Besides, that function only checks if you’re on a subpage in general, but it won’t tell you if you’re on a specific subpage.