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Add schema.org BreadcrumbList to JSON+LD (#87)

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* Add schema.org BreadcrumbList to JSON+LD

This implementation  depends on .Page.Ancestors, which requires Hugo
version v0.109.0.

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>

* Fix extraneous comma in schema

For blog posts we ended up with an extraneous comma due to it being
outside the condition for the breadcrumb
JSON+LD.

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>

* Pretty print breadcrumb JSON+LD for schema

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>

* Make breadcrumbs opt-in on non-blogSections

Sections except blogSections (which is a configurable set which is
defaulted to sections 'blog' and 'post'), may be part of
`breadcrumbSections`. For the breadcrumb Sections, the section and any
pages under it will have the `breadcrumb` attribute (of type
`BreadcrumbList`) added to the JSON+LD for their schema.org structured
data.

Update documentation of `params` for example `config.yaml` in README.

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>

---------

Signed-off-by: Daniel F. Dickinson <dfdpublic@wildtechgarden.ca>
This commit is contained in:
Daniel F. Dickinson 2023-04-23 14:17:52 -04:00 • committed by GitHub
commit eb27a1e023
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1 changed files with 49 additions and 1 deletions
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14
layouts/partials/meta_json_ld.html
View file

@ -1,8 +1,17 @@
<script type="application/ld+json">
{{- $blogSections := site.Params.blogSections | default (slice "blog" "post") }}
{{- $breadcrumbSections := site.Params.breadcrumbSections | default (slice) }}
{
"@context": "https://schema.org",
{{ if .IsPage -}}
"@type": {{ if or (eq .Section "blog") (eq .Section "post") }}"BlogPosting"{{ else }}"WebPage"{{ end }},
"@type": {{ if in $blogSections .Section -}}
"BlogPosting",
{{- else -}}
"WebPage",
{{- if in $breadcrumbSections .Section }}
"breadcrumb": {{ safeJS (partial "meta_breadcrumb_json_ld.html" .) }},
{{- end -}}
{{- end }}
"headline": {{ .Title }},
"datePublished": {{ .Date.Format "2006-01-02T15:04:05Z07:00" }},
"dateModified": {{ .Lastmod.Format "2006-01-02T15:04:05Z07:00" }},
@ -15,6 +24,9 @@
{{ end -}}
{{ else -}}
"@type": "WebPage",
{{- if in $breadcrumbSections .Section }}
"breadcrumb": {{ safeJS (partial "meta_breadcrumb_json_ld.html" .) }},
{{- end }}
"url" : {{ .Permalink }},
"name": {{ .Title }},
{{ with $.Param "description" -}}