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tpl: Allow using page resources on the images page parameter for opengraph, schema and twitter_cards templates

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The page images selection order as follows:

1. Page's images parameter, image resources are supported.
2. Page's image resources that naming in *feature*, *cover* or *thumbnail* pattern.
3. If no page images specified, then the first one of site's images will be used as the fallback, supports site resources.
This commit is contained in:
Razon Yang 2023-12-04 19:05:41 +08:00 committed by GitHub
parent 171836cdfa
commit 14d85ec136
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6 changed files with 75 additions and 51 deletions
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27
hugolib/embedded_templates_test.go
View file

@ -36,9 +36,9 @@ lastmod: 2021-05-22T19:25:00-01:00
---
`)
b.WithContent("mypage.md", `---
b.WithContent("mypage/index.md", `---
title: My Page
images: ["pageimg1.jpg", "pageimg2.jpg"]
images: ["pageimg1.jpg", "pageimg2.jpg", "https://example.local/logo.png", "sample.jpg"]
date: 2021-02-26T18:02:00+01:00
lastmod: 2021-05-22T19:25:00+01:00
---
@ -58,37 +58,42 @@ title: My Site
`)
b.WithSunset("content/mybundle/featured-sunset.jpg")
b.WithSunset("content/mypage/sample.jpg")
b.Build(BuildCfg{})
b.AssertFileContent("public/mybundle/index.html", `
<meta name="twitter:image" content="https://example.org/mybundle/featured-sunset.jpg"/>
<meta name="twitter:image" content="https://example.org/mybundle/featured-sunset.jpg" />
<meta name="twitter:title" content="My Bundle"/>
<meta property="og:title" content="My Bundle" />
<meta property="og:url" content="https://example.org/mybundle/" />
<meta property="og:image" content="https://example.org/mybundle/featured-sunset.jpg"/>
<meta property="og:image" content="https://example.org/mybundle/featured-sunset.jpg" />
<meta property="article:published_time" content="2021-02-26T18:02:00-01:00" />
<meta property="article:modified_time" content="2021-05-22T19:25:00-01:00" />
<meta itemprop="name" content="My Bundle">
<meta itemprop="image" content="https://example.org/mybundle/featured-sunset.jpg">
<meta itemprop="image" content="https://example.org/mybundle/featured-sunset.jpg" />
<meta itemprop="datePublished" content="2021-02-26T18:02:00-01:00" />
<meta itemprop="dateModified" content="2021-05-22T19:25:00-01:00" />
`)
b.AssertFileContent("public/mypage/index.html", `
<meta name="twitter:image" content="https://example.org/pageimg1.jpg"/>
<meta name="twitter:image" content="https://example.org/pageimg1.jpg" />
<meta property="og:image" content="https://example.org/pageimg1.jpg" />
<meta property="og:image" content="https://example.org/pageimg2.jpg" />
<meta property="og:image" content="https://example.local/logo.png" />
<meta property="og:image" content="https://example.org/mypage/sample.jpg" />
<meta property="article:published_time" content="2021-02-26T18:02:00+01:00" />
<meta property="article:modified_time" content="2021-05-22T19:25:00+01:00" />
<meta itemprop="image" content="https://example.org/pageimg1.jpg">
<meta itemprop="image" content="https://example.org/pageimg2.jpg">
<meta itemprop="image" content="https://example.org/pageimg1.jpg" />
<meta itemprop="image" content="https://example.org/pageimg2.jpg" />
<meta itemprop="image" content="https://example.local/logo.png" />
<meta itemprop="image" content="https://example.org/mypage/sample.jpg" />
<meta itemprop="datePublished" content="2021-02-26T18:02:00+01:00" />
<meta itemprop="dateModified" content="2021-05-22T19:25:00+01:00" />
`)
b.AssertFileContent("public/mysite/index.html", `
<meta name="twitter:image" content="https://example.org/siteimg1.jpg"/>
<meta property="og:image" content="https://example.org/siteimg1.jpg"/>
<meta itemprop="image" content="https://example.org/siteimg1.jpg"/>
<meta name="twitter:image" content="https://example.org/siteimg1.jpg" />
<meta property="og:image" content="https://example.org/siteimg1.jpg" />
<meta itemprop="image" content="https://example.org/siteimg1.jpg" />
`)
}

14
tpl/tplimpl/embedded/templates/opengraph.html
View file

@ -3,17 +3,9 @@
<meta property="og:type" content="{{ if .IsPage }}article{{ else }}website{{ end }}" />
<meta property="og:url" content="{{ .Permalink }}" />
{{- with $.Params.images -}}
{{- range first 6 . }}<meta property="og:image" content="{{ . | absURL }}" />{{ end -}}
{{- else -}}
{{- $images := $.Resources.ByType "image" -}}
{{- $featured := $images.GetMatch "*feature*" -}}
{{- if not $featured }}{{ $featured = $images.GetMatch "{*cover*,*thumbnail*}" }}{{ end -}}
{{- with $featured -}}
<meta property="og:image" content="{{ $featured.Permalink }}"/>
{{- else -}}
{{- with $.Site.Params.images }}<meta property="og:image" content="{{ index . 0 | absURL }}"/>{{ end -}}
{{- end -}}
{{- $images := partial "_funcs/get-page-images" . -}}
{{- range first 6 $images -}}
<meta property="og:image" content="{{ .Permalink }}" />
{{- end -}}
{{- if .IsPage }}

47
tpl/tplimpl/embedded/templates/partials/_funcs/get-page-images.html Normal file
View file

@ -0,0 +1,47 @@
{{- $imgs := slice }}
{{- $imgParams := .Params.images }}
{{- $resources := .Resources.ByType "image" -}}
{{/* Find featured image resources if the images parameter is empty. */}}
{{- if not $imgParams }}
{{- $featured := $resources.GetMatch "*feature*" -}}
{{- if not $featured }}{{ $featured = $resources.GetMatch "{*cover*,*thumbnail*}" }}{{ end -}}
{{- with $featured }}
{{- $imgs = $imgs | append (dict
"Image" .
"RelPermalink" .RelPermalink
"Permalink" .Permalink) }}
{{- end }}
{{- end }}
{{/* Use the first one of site images as the fallback. */}}
{{- if and (not $imgParams) (not $imgs) }}
{{- with site.Params.images }}
{{- $imgParams = first 1 . }}
{{- end }}
{{- end }}
{{/* Parse page's images parameter. */}}
{{- range $imgParams }}
{{- $img := . }}
{{- $url := urls.Parse $img }}
{{- if eq $url.Scheme "" }}
{{/* Internal image. */}}
{{- with $resources.GetMatch $img -}}
{{/* Image resource. */}}
{{- $imgs = $imgs | append (dict
"Image" .
"RelPermalink" .RelPermalink
"Permalink" .Permalink) }}
{{- else }}
{{- $imgs = $imgs | append (dict
"RelPermalink" (relURL $img)
"Permalink" (absURL $img)
) }}
{{- end }}
{{- else }}
{{/* External image */}}
{{- $imgs = $imgs | append (dict
"RelPermalink" $img
"Permalink" $img
) }}
{{- end }}
{{- end }}
{{- return $imgs }}

14
tpl/tplimpl/embedded/templates/schema.html
View file

@ -7,17 +7,9 @@
{{ with .Lastmod }}<meta itemprop="dateModified" {{ .Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />{{ end}}
<meta itemprop="wordCount" content="{{ .WordCount }}">
{{- with $.Params.images -}}
{{- range first 6 . -}}<meta itemprop="image" content="{{ . | absURL }}">{{ end -}}
{{- else -}}
{{- $images := $.Resources.ByType "image" -}}
{{- $featured := $images.GetMatch "*feature*" -}}
{{- if not $featured }}{{ $featured = $images.GetMatch "{*cover*,*thumbnail*}" }}{{ end -}}
{{- with $featured -}}
<meta itemprop="image" content="{{ $featured.Permalink }}">
{{- else -}}
{{- with $.Site.Params.images -}}<meta itemprop="image" content="{{ index . 0 | absURL }}"/>{{ end -}}
{{- end -}}
{{- $images := partial "_funcs/get-page-images" . -}}
{{- range first 6 $images -}}
<meta itemprop="image" content="{{ .Permalink }}" />
{{- end -}}
<!-- Output all taxonomies as schema.org keywords -->

20
tpl/tplimpl/embedded/templates/twitter_cards.html
View file

@ -1,22 +1,10 @@
{{- with $.Params.images -}}
<meta name="twitter:card" content="summary_large_image"/>
<meta name="twitter:image" content="{{ index . 0 | absURL }}"/>
{{ else -}}
{{- $images := $.Resources.ByType "image" -}}
{{- $featured := $images.GetMatch "*feature*" -}}
{{- if not $featured }}{{ $featured = $images.GetMatch "{*cover*,*thumbnail*}" }}{{ end -}}
{{- with $featured -}}
<meta name="twitter:card" content="summary_large_image"/>
<meta name="twitter:image" content="{{ $featured.Permalink }}"/>
{{- $images := partial "_funcs/get-page-images" . -}}
{{- with index $images 0 -}}
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:image" content="{{ .Permalink }}" />
{{- else -}}
{{- with $.Site.Params.images -}}
<meta name="twitter:card" content="summary_large_image"/>
<meta name="twitter:image" content="{{ index . 0 | absURL }}"/>
{{ else -}}
<meta name="twitter:card" content="summary"/>
{{- end -}}
{{- end -}}
{{- end }}
<meta name="twitter:title" content="{{ .Title }}"/>
<meta name="twitter:description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end -}}"/>

4
tpl/tplimpl/template.go
View file

@ -751,7 +751,7 @@ func (t *templateHandler) applyTemplateTransformers(ns *templateNamespace, ts *t
return c, err
}
//go:embed embedded/templates/*
//go:embed all:embedded/templates/*
//go:embed embedded/templates/_default/*
//go:embed embedded/templates/_server/*
var embeddedTemplatesFs embed.FS
@ -779,7 +779,7 @@ func (t *templateHandler) loadEmbedded() error {
// For the render hooks and the server templates it does not make sense to preserve the
// double _internal double book-keeping,
// just add it if its now provided by the user.
if !strings.Contains(path, "_default/_markup") && !strings.HasPrefix(name, "_server/") {
if !strings.Contains(path, "_default/_markup") && !strings.HasPrefix(name, "_server/") && !strings.HasPrefix(name, "partials/_funcs/") {
templateName = internalPathPrefix + name
}