4

I have a subdomain:

https://blog.example.com/

I forcibly redirects to directory:

https://www.example.com/blog

By changing site URL and some RewriteRule on .htaccess.

My .htaccess:

    <IfModule mod_rewrite.c>
    RewriteEngine On

    RewriteBase /blog/
    RewriteRule ^index\.php$ - [L]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule . /blog/index.php [L]

    RewriteCond %{HTTP:X-Forwarded-Host}i ^example\.com
    RewriteCond %{HTTP_HOST} ^blog\.example\.com$
    RewriteRule ^/?(.*)$ https://www.example.com/blog/$1 [L,R=301,NC]

    RewriteCond %{HTTP:X-Forwarded-Proto} !https
    RewriteCond %{HTTPS} off
    RewriteRule ^/?(.*)$ https://www.example.com/blog/$1 [L,R=301,NC]
    </IfModule>

My wordpress address and site address are:

WordPress Address (URL): /blog

Site Address (URL): https://www.example.com/blog

Now the website working fine, but I found an error in wp-admin canonical url on all admin pages:

Uncaught SecurityError: Failed to execute 'replaceState' on 'History': A history state object with URL 'blog.example.com/wp-admin/index.php'; cannot be created in a document with origin 'example.com'; and URL 'example.com/blog/wp-admin/index.php';

When I dig more I found the canonical link is still subdomain( blog.example.com ) :

<link id="wp-admin-canonical" rel="canonical" href="http://blog.example.com/wp-admin" />
    <script>
        if ( window.history.replaceState ) {
            window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href + window.location.hash );
        }
    </script>

Is there any solution for changing this canonical url from https://blog.example.com to https://www.example.com/blog

3
  • Any luck I have this too when using https its showing http:// Oct 11 '16 at 19:34
  • I also have a wrong wp-admin-canonical url ... did you ever find a fix for this?
    – higuita
    Feb 2 '17 at 22:25
  • I couldn't find a solution for this. Instead I moved my wordpress setup to amazon instance and database to RDS. Then Stop using subdomain redirection and directly pointed /blog location to the amazon instance. All good now. Sep 19 '18 at 10:21
2

wp-admin-canonical is broken, as it assumes how WordPress is installed.

there was a plugin to fix it, but the plugin was removed from the plugin repository apparently. It is still on github and pluginmirror though: https://github.com/wp-plugins/remove-wp-canonical-url-admin-hack http://www.pluginmirror.com/plugins/remove-wp-canonical-url-admin-hack/

1
  • On version wordpress version 4.8.1, it looks like this is not needed anymore, but older versions may still need this, so at least lets document it
    – higuita
    Aug 21 '17 at 21:06
0

I've overrided the wp-admin-canonical by adding this hooks in functions.php:

remove_action( 'admin_head', 'wp_admin_canonical_url' );
add_action( 'admin_head', 'wp_set_admin_canonical_url' );

function wp_set_admin_canonical_url() {
    $removable_query_args = wp_removable_query_args();

    if ( empty( $removable_query_args ) ) {
        return;
    }

    // Ensure we're using an absolute URL.
    $current_url  = admin_url( preg_replace( '#^[^?]*/wp-admin/#i', '', $_SERVER['REQUEST_URI'] ) );
    $filtered_url = remove_query_arg( $removable_query_args, $current_url );
    ?>
    <link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" />
    <script>
        if ( window.history.replaceState ) {
            window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href + window.location.hash );
        }
    </script>
    <?php
}

I've taken the code from this pull request: https://github.com/WordPress/wordpress-develop/pull/1504

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.