feat: allow to limit the number of tree posts (#196)

Allow to limit the number of posts listed per category/section entry Closes #97
reuixiy · Jun 12, 2020 · 6f3aeba · 6f3aeba
1 parent 61da9ae
commit 6f3aeba
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Showing 5 changed files with 43 additions and 8 deletions.
diff --git a/config-examples/en/config.toml b/config-examples/en/config.toml
@@ -407,6 +407,11 @@ uglyURLs = false
     # category?
     displayPostsCount = true
 
+    # Set to a non-negative number to limit
+    # the number of posts displayed per
+    # category/section.
+    limitPostsLimit = -1
+
 
     ######################################
     # Tags Page

diff --git a/config-examples/zh-cn/config.toml b/config-examples/zh-cn/config.toml
@@ -379,6 +379,9 @@ uglyURLs = false
     # 是否显示每一分类下的文章数
     displayPostsCount = true
 
+    # 设置一个非负数来限制每一分类下展示的文章数
+    limitPostsLimit = -1
+
 
     ######################################
     # 标签页面

diff --git a/layouts/partials/pages/tree-categories.html b/layouts/partials/pages/tree-categories.html
@@ -24,7 +24,9 @@ <h1 class="list-title">{{ .Title | default (.Type | title) }}</h1>
                     {{ $lastTerm := (delimit (last 1 $categoryTerms) " ") }}
                     {{ $url := urls.Parse $lastTerm }}
                     {{ $path := $url.Path }}
+                    {{ $linkTarget := "" }}
                     {{ with $.Site.GetPage (printf `/categories/%s` $path) }}
+                        {{ $linkTarget = . }}
                         <p style="padding-left: {{ $padding }}em">
                             <a href="{{ .RelPermalink }}" class="category-item">{{ .LinkTitle | default .Data.Term | default $path }}</a>
                             {{ if $.Site.Params.displayPostsCount }}
@@ -34,6 +36,7 @@ <h1 class="list-title">{{ .Title | default (.Type | title) }}</h1>
                     {{ end }}
                     {{ if $.Site.Params.displayPosts }}
                         {{ $context := . }}
+                        {{ $.Scratch.Delete "pages" }}
                         {{ range $.Site.RegularPages }}
                             {{ $page := . }}
                             {{ with .Param "categories" }}
@@ -44,12 +47,12 @@ <h1 class="list-title">{{ .Title | default (.Type | title) }}</h1>
                                 {{ end }}
                                 {{ $category := $.Scratch.Get "category" }}
                                 {{ if eq $context $category }}
-                                    <p style="padding-left: {{ add $padding (mul 2 1.2) }}em">
-                                        <a href="{{ $page.RelPermalink }}" class="category-post">{{ (partial "utils/title.html" (dict "$" $page "title" $page.LinkTitle)).htmlTitle }}</a>
-                                    </p>
+                                    {{ $.Scratch.Add "pages" (slice $page) }}
                                 {{ end }}
                             {{ end }}
                         {{ end }}
+                        {{ $pages := $.Scratch.Get "pages" }}
+                        {{ partial "utils/limit-tree-posts.html" (dict "$" $ "pages" $pages "linkTarget" $linkTarget "padding" $padding) }}
                     {{ end }}
                 {{ end }}
             </div>

diff --git a/layouts/partials/pages/tree-sections.html b/layouts/partials/pages/tree-sections.html
@@ -10,6 +10,7 @@ <h1 class="list-title">{{ .Title | default (.Type | title) }}</h1>
                 {{ range $page, $name := $pages }}
                     {{ $depth := (len (split (strings.TrimPrefix "/" $page) "/")) }}
                     {{ with $.Site.GetPage $page }}
+                        {{ $linkTarget := . }}
                         {{ $padding := (mul (mul $depth 2) 1.2) }}
                         <p style="padding-left: {{ $padding }}em">
                             <a href="{{ .RelPermalink }}" class="category-item">{{ .LinkTitle | default $name }}</a>
@@ -34,11 +35,7 @@ <h1 class="list-title">{{ .Title | default (.Type | title) }}</h1>
                                 {{ end }}
                             {{ end }}
                             {{ $pages := $.Scratch.Get "pages" }}
-                            {{ range $pages }}
-                                <p style="padding-left: {{ add $padding (mul 2 1.2) }}em">
-                                    <a href="{{ .RelPermalink }}" class="category-post">{{ (partial "utils/title.html" (dict "$" . "title" .LinkTitle)).htmlTitle }}</a>
-                                </p>
-                            {{ end }}
+                            {{ partial "utils/limit-tree-posts.html" (dict "$" $ "pages" $pages "linkTarget" $linkTarget "padding" $padding) }}
                         {{ end }}
                     {{ end }}
                 {{ end }}

diff --git a/layouts/partials/utils/limit-tree-posts.html b/layouts/partials/utils/limit-tree-posts.html
@@ -0,0 +1,27 @@
+{{- $ := index . "$" -}}
+{{- $pages := .pages -}}
+{{- $linkTarget := .linkTarget -}}
+{{- $padding := .padding -}}
+
+{{ with $pages }}
+    {{ $rawPages := . }}
+    {{ $limit := -1 }}
+    {{ if isset $.Site.Params "limitpostslimit" }}
+        {{ $limit = $.Site.Params.limitPostsLimit }}
+    {{ end }}
+    {{ if ge $limit 0 }}
+        {{ $pages = $pages | first $limit -}}
+    {{ end }}
+    {{ range $pages }}
+        <p style="padding-left: {{ add $padding (mul 2 1.2) }}em">
+            <a href="{{ .RelPermalink }}" class="category-post">{{ (partial "utils/title.html" (dict "$" . "title" .LinkTitle)).htmlTitle }}</a>
+        </p>
+    {{ end }}
+    {{ if and (gt $limit 0) (gt (len $rawPages) $limit) }}
+        {{ with $linkTarget }}
+            <p style="padding-left: {{ add $padding (mul 2 1.2) }}em">
+                <a href="{{ $linkTarget.RelPermalink }}" class="category-post">{{ i18n "readMore" }} »</a>
+            </p>
+        {{ end }}
+    {{ end }}
+{{ end }}