website/layouts/partials/helpers/image.html

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<!-- Modified to have the featured image field as a dict (being able to specify meta data and display option for image) -->
{{ $result := dict "exists" false "permalink" nil "resource" nil "isDefault" false }}
{{ $imageField := "featured_image" }}
{{ $imageValue := index .Context.Params $imageField }}
{{ if $imageValue }}
{{ $imageValue := index $imageValue "src" }}
<!-- If page has `image` field set -->
{{ $result = merge $result (dict "exists" true) }}
{{ $url := urls.Parse $imageValue }}
{{ if or (eq $url.Scheme "http") (eq $url.Scheme "https") }}
<!-- Is an external image -->
{{ $result = merge $result (dict "permalink" $imageValue) }}
{{ else }}
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{{ $pageResourceImage := (.Context.Resources.GetMatch ($imageValue | safeURL)).Fill "300x300 center" }}
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{{ if $pageResourceImage }}
<!-- If image is found under page bundle -->
{{ $result = merge $result (dict "permalink" $pageResourceImage.RelPermalink) }}
{{ else }}
<!-- Can not find the image under page bundle. Could be a relative linked image -->
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{{ $result = merge $result (dict "permalink" (printf "%s" (relURL $imageValue))) }}
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{{ end }}
{{ end }}
{{ else }}
<!-- Type arg is set, check for defaultImage setting -->
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{{ $defaultImageSetting := .Context.Site.Params.defaultImage }}
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{{ $result = merge $result (dict "isDefault" true) }}
{{ $result = merge $result (dict "exists" true) }}
{{ if $defaultImageSetting.local }}
{{ $siteResourceImage := resources.GetMatch (printf "%s" ($defaultImageSetting.src | safeURL)) }}
{{ if $siteResourceImage }}
<!-- Try search image under site's assets folder -->
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{{ $result = merge $result (dict "permalink" ($siteResourceImage.Fill "300x300 center").RelPermalink) }}
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{{ else }}
<!-- Can not find the image -->
{{ errorf "Failed loading image: %q" $defaultImageSetting.src }}
{{ $result = merge $result (dict "exists" false) }}
{{ end }}
{{ else }}
<!-- External image -->
{{ $result = merge $result (dict "permalink" (relURL $defaultImageSetting.src)) }}
{{ end }}
{{ end }}
{{ return $result }}