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112 lines
5.3 KiB
Markdown
112 lines
5.3 KiB
Markdown
---
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title: Content Summaries
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linktitle: Summaries
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description: Hugo generates summaries of your content.
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date: 2017-01-10
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publishdate: 2017-01-10
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lastmod: 2017-01-10
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categories: [content management]
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keywords: [summaries,abstracts,read more]
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menu:
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docs:
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parent: "content-management"
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weight: 90
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weight: 90 #rem
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draft: false
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aliases: [/content/summaries/,/content-management/content-summaries/]
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toc: true
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---
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With the use of the `.Summary` [page variable][pagevariables], Hugo generates summaries of content to use as a short version in summary views.
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## Summary Splitting Options
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* Automatic Summary Split
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* Manual Summary Split
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* Front Matter Summary
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It is natural to accompany the summary with links to the original content, and a common design pattern is to see this link in the form of a "Read More ..." button. See the `.RelPermalink`, `.Permalink`, and `.Truncated` [page variables][pagevariables].
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### Automatic Summary Splitting
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By default, Hugo automatically takes the first 70 words of your content as its summary and stores it into the `.Summary` page variable for use in your templates. You may customize the summary length by setting `summaryLength` in your [site configuration](/getting-started/configuration/).
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{{% note %}}
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You can customize how HTML tags in the summary are loaded using functions such as `plainify` and `safeHTML`.
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{{% /note %}}
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{{% note %}}
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The Hugo-defined summaries are set to use word count calculated by splitting the text by one or more consecutive whitespace characters. If you are creating content in a `CJK` language and want to use Hugo's automatic summary splitting, set `hasCJKLanguage` to `true` in your [site configuration](/getting-started/configuration/).
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{{% /note %}}
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### Manual Summary Splitting
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Alternatively, you may add the <code><!--more--></code> summary divider where you want to split the article.
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For [Org mode content][org], use `# more` where you want to split the article.
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Content that comes before the summary divider will be used as that content's summary and stored in the `.Summary` page variable with all HTML formatting intact.
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{{% note "Summary Divider"%}}
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The concept of a *summary divider* is not unique to Hugo. It is also called the "more tag" or "excerpt separator" in other literature.
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{{% /note %}}
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Pros
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: Freedom, precision, and improved rendering. All HTML tags and formatting are preserved.
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Cons
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: Extra work for content authors, since they need to remember to type <code><!--more--></code> (or `# more` for [org content][org]) in each content file. This can be automated by adding the summary divider below the front matter of an [archetype](/content-management/archetypes/).
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{{% warning "Be Precise with the Summary Divider" %}}
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Be careful to enter <code><!--more--></code> exactly; i.e., all lowercase and with no whitespace.
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{{% /warning %}}
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### Front Matter Summary
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You might want your summary to be something other than the text that starts the article. In this case you can provide a separate summary in the `summary` variable of the article front matter.
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Pros
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: Complete freedom of text independent of the content of the article. Markup can be used within the summary.
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Cons
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: Extra work for content authors as they need to write an entirely separate piece of text as the summary of the article.
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## Summary Selection Order
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Because there are multiple ways in which a summary can be specified it is useful to understand the order of selection Hugo follows when deciding on the text to be returned by `.Summary`. It is as follows:
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1. If there is a <code><!--more--></code> summary divider present in the article the text up to the divider will be provided as per the manual summary split method
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2. If there is a `summary` variable in the article front matter the value of the variable will be provided as per the front matter summary method
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3. The text at the start of the article will be provided as per the automatic summary split method
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{{% warning "Competing selections" %}}
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Hugo uses the _first_ of the above steps that returns text. So if, for example, your article has both `summary` variable in its front matter and a <code><!--more--></code> summary divider Hugo will use the manual summary split method.
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{{% /warning %}}
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## Example: First 10 Articles with Summaries
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You can show content summaries with the following code. You could use the following snippet, for example, in a [section template][].
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{{< code file="page-list-with-summaries.html" >}}
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{{ range first 10 .Pages }}
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<article>
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<!-- this <div> includes the title summary -->
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<div>
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<h2><a href="{{ .RelPermalink }}">{{ .Title }}</a></h2>
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{{ .Summary }}
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</div>
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{{ if .Truncated }}
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<!-- This <div> includes a read more link, but only if the summary is truncated... -->
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<div>
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<a href="{{ .RelPermalink }}">Read More…</a>
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</div>
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{{ end }}
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</article>
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{{ end }}
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{{< /code >}}
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Note how the `.Truncated` boolean variable value may be used to hide the "Read More..." link when the content is not truncated; i.e., when the summary contains the entire article.
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[org]: /content-management/formats/
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[pagevariables]: /variables/page/
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[section template]: /templates/section-templates/
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