add paginated section index pages

The first collection page earns the Query primitive: content.Query{Section, Lang} with Site.Run, newest first, undated after dated, ties broken by key so the same query always answers in the same order. No cache signature — nothing caches, and a signature with no consumer is speculation. Pagination lives in the path (ADR-0028): page one is the bare listing URL, /page/1/ redirects to it, and a page past the end is 404 rather than an empty page, because an empty page is a URL that means nothing. `page` is therefore a reserved segment inside a section, now recorded in content-model.md. Two kinds of page means two parsed template sets already — base plus the block that kind defines — which is ADR-0019's per-type shape arriving by need rather than by anticipation. A head struct is embedded in both Page and List so base.html has one contract, and theme-contract.md gains the listing fields. Bundle gains Date, accepting an unquoted YAML date or an RFC 3339 string, since yaml.v3 hands back time.Time for one and a string for the other. Evidence: 12 posts → /posts/ shows 10 with rel=next to /posts/page/2/, /posts/page/2/ shows 3 with rel=prev to /posts/, ordering is post-12 11 10, /posts/page/1/ 301s to /posts/, /posts/page/9/ is 404, /bn/posts/ is 200.
2026-07-30 02:08:12 +06:00
parent 01ac1bf431
commit c8006e7358
12 changed files with 394 additions and 46 deletions
@@ -4,7 +4,7 @@
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width, initial-scale=1">
-<title>{{if .Title}}{{.Title}}{{else}}{{.Key}}{{end}}</title>
+<title>{{.Title}}</title>
 <link rel="canonical" href="{{.Canonical}}">
 {{- range .Alternates}}
 <link rel="alternate" hreflang="{{.Lang}}" href="{{.URL}}">
@@ -13,12 +13,7 @@
 </head>
 <body>
 <main>
-{{block "main" . -}}
-<article>
-{{if .Title}}<h1>{{.Title}}</h1>{{end}}
-{{.HTML}}
-</article>
-{{- end}}
+{{- template "main" .}}
 </main>
 </body>
 </html>
@@ -0,0 +1,20 @@
+{{define "main" -}}
+<h1>{{.Title}}</h1>
+{{if .Items -}}
+<ul class="listing">
+{{- range .Items}}
+<li><a href="{{.URL}}">{{if .Title}}{{.Title}}{{else}}{{.Key}}{{end}}</a>
+{{- if not .Date.IsZero}} <time datetime="{{.Date.Format "2006-01-02"}}">{{.Date.Format "2 January 2006"}}</time>{{end}}</li>
+{{- end}}
+</ul>
+{{- else}}
+<p>Nothing here yet.</p>
+{{- end}}
+{{- if or .PrevURL .NextURL}}
+<nav class="pagination">
+{{- if .PrevURL}}<a rel="prev" href="{{.PrevURL}}">Newer</a>{{end}}
+<span>Page {{.Page}} of {{.Pages}}</span>
+{{- if .NextURL}}<a rel="next" href="{{.NextURL}}">Older</a>{{end}}
+</nav>
+{{- end}}
+{{- end}}
@@ -0,0 +1,6 @@
+{{define "main" -}}
+<article>
+{{if .Title}}<h1>{{.Title}}</h1>{{end}}
+{{.HTML}}
+</article>
+{{- end}}