Holy taxonomy jumping Batman! This first feature release of 2020 changes the way taxonomies are handled when passing from function to function. Now, it is possible to change the taxonomy, in addition to the term, used for a post’s hierarchy using the bcn_pick_post_term filter. Additionally, the bcn_breadcrumb_linked filter was added to allow manipulation of the breadcrumb’s linked state. On the administration interface front, a new capability was introduced, bcn_manage_options. Lastly, a bug was fixed in the settings exporter that caused it to generate non-importable settings files when certain HTML entities were present in a setting.

bcn_breadcrumb_linked Filter

In Breadcrumb NavXT 6.4.0, the way URLs and the linked state for individual breadcrumbs changed. This was to facilitate the ability to place the %link% tag in unlinked breadcrumb templates. As part of this bcn_breadcrumb::set_linked() was introduced. To allow users to control the behavior of this function, the bcn_breadcrumb_linked filter was added in 6.5.0.

bcn_manage_options Capability

Up until Breadcrumb NavXT 6.5.0, the manage_options capability was used to gate access to the Breadcrumb NavXT settings page. While this did insure the proper level of authority for modifying settings, it did not allow flexibility to add the ability to mange just the Breadcrumb NavXT settings to a role. Thus, in 6.5.0, the bcn_manage_options capability was added. By default this capability is added to the administrator role.

-John Havlik

Holy incremental improvements Batman! This second feature release of 2019 changes the way private posts and non-hierarchical taxonomies are handled. As part of these changes, a new filter was added bcn_show_post_private. Additionally, the %link% template tag is now allowed in the “unlinked” breadcrumb templates. Lastly, how the Media post type settings are handles changed. Previously, it was referred to as “Attachments” within the Breadcrumb NavXT settings page. Now, this post type is referred to by its actual name (Media) and additional settings are available for it in the settings page.

bcn_show_post_private Filter

Beginning in 6.4.0, the default behavior for private posts has changed. If a parent of a post has the published status of private, it no longer will be included in the breadcrumb trail (Breadcrumb NavXT will skip over it). While this was deemed the most appropriate behavior, some users may want the old behavior. To facilitate that, the bcn_show_post_private filter was added in 6.4.0.

bcn_show_type_term_archive Filter

Since 3.9.0, Breadcrumb NavXT has attempted to associate a taxonomy with a post type to include the type archive in the breadcrumb trail. This was not controllable (if the post type had an archive and it was enabled in the settings for that post type, it would show up in the breadcrumb trails for associated taxonomy terms). To allow users to control this behavior, the bcn_show_type_term_archive filter was added in 6.4.0.

Non-Hierarchical Taxonomies

Previously, the use of non-hierarchical taxonomies as the parent for posts was handled in a very different manner than hierarchical taxonomies. This is quite hacky, and incompatible with the newer bcn_display_json_ld() function. To resolve some of these incompatibilities, when a post has onl only a single non-hierarchical term, the hierarchical term codepath will be used. This will result in the same breadcrumb trial being produced, however, it will no longer cause issues with bcn_display_json_ld.

-John Havlik

Holy Gutenberg breadcrumb trail block Batman! Originally scheduled for inclusion in Breadcrumb NavXT 6.2, the Breadcrumb Trail Gutenberg Block finally makes an appearance in 6.3. Additionally, changes were made to improve accessibility standards support (both in the settings page and in the breadcrumb trail). Lastly, a bug that caused a PHP error in bcn_breadcrumb_trail::fill() has been fixed.

bcn_display_attribute_array Filter

Back in 6.0, the bcn_display_attributes filter was added to replace the old bcn_li_attributes filter. This was little more than a name change for the filter. Unfortunately, neither filter is easy to use—both require string processing. As an alternative, easier to use filter, bcn_display_attribute_array was added to Breadcrumb NavXT 6.3. This filter works against a key-value pair array of the attributes.

bcn-aria-current Template Tag

To facilitate WAI-ARIA Breadcrumb support, a new template tag was added in 6.3. Unlike the other template tags that start and end with %, this template tag is simply bcn-aria-current. This tag is replaced with aria-current="page" when the breadcrumb represents the current page, otherwise it is replaced with an empty string.

As always, you can grab the latest version of Breadcrumb NavXT from the Breadcrumb NavXT page. If you experience any issues with this version of Breadcrumb NavXT, please leave a comment on this post detailing the issue.