fix: bring the post.excerpt parameter back

exampleSite/config/_default/params.toml

@@ -91,7 +91,7 @@ viewer = true # Image Viewer
 lineNos = false # true/false represents that show/hide the line numbers by default.
 
 [post]
-# excerpt = "description"
+# excerpt = "" # uncomment to use summaries as excerpts.
 # excerptMaxLength = 120
 # copyright = false # Whether to display copyright section on each post.
 # plainifyExcerpt = false # Format excerpt in HTML if false.

exampleSite/content/docs/configuration/site-params/index.md

@@ -122,7 +122,7 @@ The site parameters are located in `config/_default/params.toml` by default.
 | `codeBlock.lineNos` | Boolean | `true` | `true`/`false` represents that show/hide the line numbers by default.
 | **Post** 
 | `post` | Object | - | 
-| ~~`post.excerpt`~~ | String | `Description` | Deleted since `v1.2.1`, the description will be used as the excerpt if not empty.
+| `post.excerpt` | String | `Description` | The description will be used as the excerpt if not empty, to use summaries as excerpt, you'll need to set it as _empty string_ explicitly.
 | `post.excerptMaxLength` | Integer | `320` |
 | `post.copyright` | Boolean | `true` | Whether to display copyright section on each post.
 | `post.plainifyExcerpt` | Boolean | `true` | Format excerpt in HTML if `false`.

exampleSite/content/docs/configuration/site-params/index.zh-hans.md

@@ -125,7 +125,7 @@ authors = ["RazonYang"]
 | `codeBlock.lineNos` | Boolean | `true` | `true`/`false` 表示默认情况下显示/隐藏行号。
 | **Post** 
 | `post` | Object | - | 
-| ~~`post.excerpt`~~ | String | `Description` | 自 `v1.2.1` 删除，若 Description 不为空则作为摘要。
+| `post.excerpt` | String | `Description` | 若 Description 不为空则作为摘要，若需要使用 Summaries 作为摘要，你需要显式地将其设为**空字符串**。
 | `post.excerptMaxLength` | Integer | `320` | 
 | `post.copyright` | Boolean | `true` | 是否在每个帖子上显示版权部分
 | `post.plainifyExcerpt` | Boolean | `true` | `false` 则格式化摘要为 HTML。

exampleSite/content/docs/configuration/site-params/index.zh-hant.md

@@ -125,7 +125,7 @@ authors = ["RazonYang"]
 | `codeBlock.lineNos` | Boolean | `true` | `true`/`false` 表示默認情況下顯示/隱藏行號。
 | **Post** 
 | `post` | Object | - | 
-| ~~`post.excerpt`~~ | String | `Description` | 自 `v1.2.1` 刪除，若 Description 不為空則作為摘要。
+| `post.excerpt` | String | `Description` | 如果 Description 不為空則作為摘要，若需要使用 Summaries 作為摘要，你需要明確地將其設為**空字串**。
 | `post.excerptMaxLength` | Integer | `320` | 
 | `post.copyright` | Boolean | `true` | 是否在每個帖子上顯示版權部分
 | `post.plainifyExcerpt` | Boolean | `true` | `false` 則格式化摘要為 HTML。

exampleSite/content/docs/content/index.md

@@ -107,7 +107,7 @@ $ hugo new posts/new-post/index.zh-cn.md
 
 ## Summaries Selection Order
 
-1. If the `description` is not empty, then it'll be used.
+1. If the `description` is not empty, then it'll be used, to use summaries all the time, you should set the `post.excerpt` as _empty string_ explicitly.
 1. Manual splitting via <code>&lt;!--more--&gt;</code>.
 1. If `summary` on front matter isn't empty, then `summary` will be selected.
 1. The text of content will be cut off by `post.excerptMaxLength` and formatted in plain text or HTML when `post.plainifyExcerpt = true`.

exampleSite/content/docs/content/index.zh-hans.md

@@ -105,7 +105,7 @@ $ hugo new posts/new-post/index.zh-cn.md
 
 ## 摘要选择顺序
 
-1. If the `description` is not empty, then it'll be used.
+1. If the `description` is not empty, then it'll be used, to use summaries all the time, you should set the `post.excerpt` as _empty string_ explicitly.
 1. Manual splitting via <code>&lt;!--more--&gt;</code>.
 1. If `summary` on front matter isn't empty, then `summary` will be selected.
 1. The text of content will be cut off by `post.excerptMaxLength` and formatted in plain text or HTML when `post.plainifyExcerpt = true`.

exampleSite/content/docs/content/index.zh-hant.md

@@ -105,7 +105,7 @@ $ hugo new posts/new-post/index.zh-tw.md
 
 ## 摘要選擇順序
 
-1. If the `description` is not empty, then it'll be used.
+1. If the `description` is not empty, then it'll be used, to use summaries all the time, you should set the `post.excerpt` as _empty string_ explicitly.
 1. Manual splitting via <code>&lt;!--more--&gt;</code>.
 1. If `summary` on front matter isn't empty, then `summary` will be selected.
 1. The text of content will be cut off by `post.excerptMaxLength` and formatted in plain text or HTML when `post.plainifyExcerpt = true`.

layouts/partials/post/excerpt.html

@@ -1,9 +1,14 @@
+{{- $key := "description" }}
+{{- if isset site.Params.post "excerpt" }}
+  {{- $key = site.Params.post.excerpt }}
+{{- end }}
+{{- $useDescription := and (eq $key "description") .Description }}
 {{- $anchor := "" }}
 {{- if default false $.Site.Params.post.readMoreFromContent }}{{ $anchor = "#post-content-body" }}{{ end }}
 {{- $readMoreButton := printf "<div><a class=\"btn btn-sm btn-outline-primary btn-read-more\" href=\"%s%s\">%s</a></div>" .RelPermalink $anchor (i18n "read_more") | safeHTML }}
 {{- $content :=  "" }}
 {{- $readMore := true }}
-{{- if .Description }}
+{{- if $useDescription }}
   {{- $content = printf "<p>%s</p>" .Description | safeHTML }}
 {{- else if strings.Contains .RawContent "<!--more-->" }}
   {{- $content = .Summary }}