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1cbe2066ec
Adds a new partial — `head/og-image.html` — that will render the value to be used
for `og:image` meta tags. The changes preserve the existing Hugo OpenGraph template's
behavior of checking and using the frontmatter or specific format of image names
as the `og:image` but if that doesn't work, it will delegate to the default partial which
uses `assets/images/og-image.{ext}` as the image.
This partial can be overriden to allow dynamic `og:image` URLs via a third-party service.
`_internal/opengraph.html` source is copied from Hugo to customize and support
this feature. Docs are updated to mention its usage.
94 lines
No EOL
2.9 KiB
HTML
94 lines
No EOL
2.9 KiB
HTML
{{- /*
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Original source: https://github.com/gohugoio/hugo/blob/61c39ae63b62667d965c2ff96d085f4eda59bcb2/tpl/tplimpl/embedded/templates/opengraph.html
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*/ -}}
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<meta property="og:url" content="{{ .Permalink }}">
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{{- with or site.Title site.Params.title | plainify }}
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<meta property="og:site_name" content="{{ . }}">
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{{- end }}
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{{- /* Source modified to remove pipe to `plainify` */ -}}
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{{- with or .Title site.Title site.Params.title }}
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<meta property="og:title" content="{{ . }}">
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{{- end }}
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{{- with or .Description .Summary site.Params.description | plainify | htmlUnescape }}
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<meta property="og:description" content="{{ trim . "\n\r\t " }}">
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{{- end }}
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{{- with or .Params.locale site.Language.LanguageCode }}
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<meta property="og:locale" content="{{ replace . `-` `_` }}">
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{{- end }}
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{{- if .IsPage }}
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<meta property="og:type" content="article">
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{{- with .Section }}
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<meta property="article:section" content="{{ . }}">
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{{- end }}
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{{- $ISO8601 := "2006-01-02T15:04:05-07:00" }}
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{{- with .PublishDate }}
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<meta property="article:published_time" {{ .Format $ISO8601 | printf "content=%q" | safeHTMLAttr }}>
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{{- end }}
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{{- with .Lastmod }}
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<meta property="article:modified_time" {{ .Format $ISO8601 | printf "content=%q" | safeHTMLAttr }}>
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{{- end }}
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{{- range .GetTerms "tags" | first 6 }}
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<meta property="article:tag" content="{{ .Page.Title | plainify }}">
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{{- end }}
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{{- else }}
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<meta property="og:type" content="website">
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{{- end }}
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{{- with partial "_funcs/get-page-images" . }}
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{{- range . | first 6 }}
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<meta property="og:image" content="{{ .Permalink }}">
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{{- end }}
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{{- else -}}
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{{- /*
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Source modified to load `assets/images/og-image.{webp,png,jpg}` files if any of them exists.
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og-image.html can be modified in Hugo project if custom image generation logic is desired such
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as using an external service.
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*/ -}}
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{{- if (and (or .IsHome .IsPage) (templates.Exists "partials/head/og-image.html")) -}}
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{{- $ogImage := partial "head/og-image.html" . -}}
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{{- with $ogImage -}}
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<meta property="og:image" content="{{ . }}">
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{{- end -}}
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{{- end }}
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{{- end }}
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{{- with .Params.audio }}
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{{- range . | first 6 }}
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<meta property="og:audio" content="{{ . | absURL }}">
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{{- end }}
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{{- end }}
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{{- with .Params.videos }}
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{{- range . | first 6 }}
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<meta property="og:video" content="{{ . | absURL }}">
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{{- end }}
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{{- end }}
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{{- range .GetTerms "series" }}
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{{- range .Pages | first 7 }}
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{{- if ne $ . }}
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<meta property="og:see_also" content="{{ .Permalink }}">
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{{- end }}
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{{- end }}
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{{- end }}
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{{- with site.Params.social }}
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{{- if reflect.IsMap . }}
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{{- with .facebook_app_id }}
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<meta property="fb:app_id" content="{{ . }}">
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{{- else }}
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{{- with .facebook_admin }}
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<meta property="fb:admins" content="{{ . }}">
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{{- end }}
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{{- end }}
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{{- end }}
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{{- end }} |