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feat: add ItemList structured data for comparison table pages #18477

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6f552f9
feat: add ItemList structured data for comparison table pages
alexleventer Apr 10, 2026
fd506f2
fix: extract column names from table header row, wire hasPart to WebPage
github-actions[bot] Apr 13, 2026
18795e9
Address PR review: scope ItemList to first table, strip markdown emph…
alexleventer Apr 24, 2026
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90 changes: 90 additions & 0 deletions layouts/partials/schema/collectors/comparison-table-entity.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,90 @@
{{/* Returns ItemList entity for comparison tables found on /comparisons/ pages */}}

{{ $entity := dict }}

{{ if strings.Contains .RelPermalink "/comparisons/" }}

{{/* Extract the competitor name — try h1, title_tag, then title */}}
{{ $title := or .Params.h1 .Params.title_tag .Title }}
{{ $competitorName := "" }}
{{ $productName := "Pulumi" }}
{{ if strings.Contains $title "Pulumi vs" }}
{{ $competitorName = replaceRE `^.*Pulumi vs\.?\s*` "" $title }}
{{ else if strings.Contains $title " vs" }}
{{ $parts := split $title " vs" }}
{{ if ge (len $parts) 2 }}
{{ $productName = index $parts 0 | strings.TrimSpace }}
{{ $competitorName = index $parts 1 | replaceRE `^\.?\s*` "" | strings.TrimSpace }}
{{ end }}
{{ end }}

{{ if and $competitorName (strings.Contains .RawContent "| Feature |") }}

{{/* Extract from "| Feature |" onward */}}
{{ $afterHeader := replaceRE `(?s)^.*?\| Feature \|` "| Feature |" .RawContent }}

{{/* Extract all table lines */}}
{{ $allTableLines := findRE `(?m)^\|.+\|` $afterHeader }}

{{ if ge (len $allTableLines) 3 }}

{{ $dataLines := $allTableLines | after 2 }}

{{/* Use Scratch to accumulate rows inside range */}}
{{ $.Scratch.Set "compRows" slice }}

{{ range $dataLines }}
{{ $line := . | strings.TrimSpace }}
{{ if not (findRE `^\|[\s\-:|]+\|$` $line) }}
{{ $cells := split $line "|" }}
{{ if ge (len $cells) 4 }}
{{ $feature := index $cells 1 | strings.TrimSpace }}
{{ $feature = replaceRE `\[([^\]]+)\]\([^)]+\)` "$1" $feature }}
{{ $val1 := index $cells 2 | strings.TrimSpace }}
{{ $val2 := index $cells 3 | strings.TrimSpace }}
{{ $val1 = replaceRE `<[^>]+>` " " $val1 }}
{{ $val2 = replaceRE `<[^>]+>` " " $val2 }}
{{ $val1 = replaceRE `\[([^\]]+)\]\([^)]+\)` "$1" $val1 }}
{{ $val2 = replaceRE `\[([^\]]+)\]\([^)]+\)` "$1" $val2 }}
{{ $existing := $.Scratch.Get "compRows" }}
{{ $.Scratch.Set "compRows" ($existing | append (dict "feature" $feature "product" $val1 "competitor" $val2)) }}
{{ end }}
{{ end }}
{{ end }}

{{ $rows := $.Scratch.Get "compRows" }}
{{ $.Scratch.Delete "compRows" }}

{{ if len $rows }}

{{/* Build ItemList with ListItem entries */}}
{{ $.Scratch.Set "compItems" slice }}
{{ range $i, $row := $rows }}
{{ $position := add $i 1 }}
{{ $existing := $.Scratch.Get "compItems" }}
{{ $.Scratch.Set "compItems" ($existing | append (dict
"@type" "ListItem"
"position" $position
"name" $row.feature
"description" (printf "%s: %s | %s: %s" $productName $row.product $competitorName $row.competitor)
)) }}
{{ end }}

{{ $items := $.Scratch.Get "compItems" }}
{{ $.Scratch.Delete "compItems" }}

{{ $entity = dict
"@type" "ItemList"
"@id" "#comparison-table"
"name" (printf "%s vs. %s Feature Comparison" $productName $competitorName)
"description" (printf "Side-by-side feature comparison of %s and %s for infrastructure as code" $productName $competitorName)
"numberOfItems" (len $items)
"itemListElement" $items
}}

{{ end }}
{{ end }}
{{ end }}
{{ end }}

{{ return $entity }}
8 changes: 8 additions & 0 deletions layouts/partials/schema/graph-builder.html
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,14 @@
{{ $graph = $graph | append $software }}
{{ end }}

{{/* Add comparison table schema for comparison pages */}}
{{ if not .IsHome }}
{{ $comparisonTable := partial "schema/collectors/comparison-table-entity.html" . }}
{{ if and $comparisonTable (ne $comparisonTable (dict)) }}
{{ $graph = $graph | append $comparisonTable }}
{{ end }}
{{ end }}

{{/* Add video schema if page contains YouTube videos */}}
{{ if not .IsHome }}
{{ $videoEntity := partial "schema/collectors/video-entity.html" . }}
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