John Havlik

If you want a specific hierarchy, it’s recommended to organize your content within WordPress such that said hierarchy is present (otherwise you’re just creating more work for yourself). Breadcrumb NavXT does not use the URL structure to determine what the breadcrumb trail should be, it uses the relationships between posts, their parents (if present), and the terms (of whatever taxonomy) they are members of. If said relationships are not established, you aren’t going to get the breadcrumb trail you expect.

For example, if the breadcrumb trail ends up being Home > Citypages and you want it to be Home > Services > Web Design > Citypages, if these are all of the page post type, then Citypages must be a child of Web Design which must be a child of Services (that is Citypages needs to have Web Design set as its parent page, and Web Design needs to have Services set as its parent page). Note that using pages isn’t the only way to make this hierarchy relationship work (there are ways of doing this with Custom Post Types with custom taxonomies as well).

Under certain circumstances, manually adding breadcrumbs to the breadcrumb trail is necessary (unlikely in this situation, usually necessary for adding support for 3rd party plugins that expand past the normal scope of what WordPress does with post and term/taxonomy relationships), and there are examples of how to do this in the documentation for the bcn_after_fill action.

The code probably tries to access something that doesn’t exist. That is, your breadcrumbs array may not have any members, or only a single member (which would result in the -2 in the calculation for the key try to access something that doesn’t exist). You probably should check that there are more than 2 members in the breadcrumbs array before running that bit of code.

Also note, bcn_after_fill is an action not a filter so the hook registration isn’t correct there (it’ll work but isn’t technically correct).

In the Breadcrumb NavXT settings page, replace %htitle% and %title% in the home template with the text you want to display in the breadcrumb for the home page and press the “Save Changes” button.

While I’d content having the first member of the object_type array within the taxonomy object be empty violates the API, I’ve made some changes to check for the existence before trying to use. This was tracked in the following github issue: https://github.com/mtekk/Breadcrumb-NavXT/issues/290

Breadcrumb NavXT doesn’t by default output the breadcrumb trail twice, my guess is the original call to bcn_display() was still there somewhere. It looks like on the page you linked to earlier that there is just one breadcrumb trail, and that the validator seems to find the BreadcrumbList element, are you still having this issue?

If you look at what the search console is complaining about, it appears to be on a JSON-LD breadcrumb, which appears to be part of a block that Rank Math is creating (my guess is this is not Breadcrumb NavXT that is causing the issue). If Rank Math is trying to pull in the JSON-LD output of Breadcrumb NavXT, there is likely some extra stuff that needs to be done (see https://github.com/mtekk/Breadcrumb-NavXT-Schema/blob/master/class-schema-breadcrumb-navxt.php). Namely, if you are going to have the item subfield be an array, you must specify a type (specifically "@type":"WebPage"). Of course, this isn’t in the schema.org examples, but both the schema.org validator and the Google validator seem to want this.

There should be a way of accomplishing this using CSS (which is a better way than generating different content for mobile vs desktop). There is a way to target the nth element in a structure, which should allow you to target the second-to-last item in the trail to display (and can modify the text/prepend text to the text). I’ll look at this a little more and see if I can come up with a CSS demo.

The current version (Breadcrumb NavXT 7.2) works fine with WordPress 6.3, updated the readme to match.