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dce236ad1 Wrap up the bundle etc. edits for now 27d058566 Add the bundle tree to the organization bundle a83f750dd Move organization.md to its own bundle 01ec4f462 Make the image docs a bundle 60de1e090 Some more resources copy-edits 05d763c0c Some resource copy-edits 6299d6dbb Update the imgproc shortcode 59e0fc209 Add headless bundle documentation a3bbf60bf Link Page Resources page from Front Matter page 830576f86 Update order significance section, add counter section 3b1836509 Revert the recent change made to default list template 886ed0e10 Page Bundles draft rev 2 f530d1a7a image processing and page resources made into regular .md ec47cecda Finalised Page Resources and Image Processing Moved Page Resources and Impage Processing out of the Bundle section and at the root of the Content Management section 253092335 Modified front matter metadata exemple. Added yaml version. da5e4f476 Adding date in the front-matter; missed in previous commit 6bc3ced13 Add rough draft for page and section bundles a0e44458f Image processing first draft, Resources second read/fix 2367f0b78 data: Remove duplicate layouts in table c2f179839 First draft of bundles/resources (covers resources and metadata) 2a3f9a613 Add weights to pages in Bundles branch 9a0146cc0 Switch front-matter format of Bundles doc to yaml; add front-matter 1295fc083 First draft for Bundles documentation organization structure 5a2e52231 Fix archetype paths 9c2e5c063 Merge commit '22cced34fc608256f8271ad591a5ccca991bb164' 22cced34f Squashed 'themes/gohugoioTheme/' changes from 75da2f6b..ecad8247 55d16c9a1 Fix broken sentence in multilingual sections a76895ad2 Replace the outdated Emacs package with new one e6cf1dec0 Remove obsolete link to hugo roadmap dd2fd145b Add GitLab Pages to mentioned hosters (#309) a05ce6bf6 Add 0.34 release notes poster 5c0ebdfca Release 0.34 13c2f3dc8 Merge branch 'temp34' e6b5ffa04 Add 0.34 poster 1e1960496 releaser: Add release notes to /docs for release of 0.34 ac3efe182 releaser: Bump versions for release of 0.34 8f91f62d8 Fixes #222 cca35dbe4 Fix example eaaa21ca1 Add missing params key 00d0b0363 Adding new Blogger utility to tools/migrations 7d36d579e Updated the line number for Dockerfile pointer 852188f85 Update installing.md with Fedora instructions 4d151a3ab Update search.md 4c2750bfb Update deployment-with-nanobox.md c3cc9cd49 configuration: Remove defaultExtension from docs f7c96b4b5 Update GitHub Pages documentation 55787f09a Merge branch 'rmetzler-menu-link-title' 2abbd9bd9 Merge branch 'master' into menu-link-title e1fd710b7 Bring archetypes in from theme. daf6f51c0 Mention the significance of leading 0 in int fn string input 07f498755 Add documentation for `cond` function. 050ccd12b Add documentation for the .HasShortcode function 919af9071 Correct anchor under 'Add custom metadata to a Taxonomy Term' 55600b4ff More layouts work 201cf4f67 Add some more single page layout variants d5e7c03e2 Rework the layouts doc 84622e67c Cleans up the code sample c231c9bd5 Add a new note to 0.33 relnotes 328ec9930 Release 0.33 b108fcc7b Merge branch 'temp33' into next ab9d9ee65 releaser: Prepare repository for 0.34-DEV e20c75320 releaser: Add release notes to /docs for release of 0.33 49f24dcd1 releaser: Bump versions for release of 0.33 9c8e5e207 Update 0.33 poster 7655603c8 Regenerate the docshelper data 16dc99583 Add Hugo 0.33 poster ce40cc197 Merge commit '3cf4300097610bb8b5bd0686d96d1df5db641895' 9a3085523 releaser: Prepare repository for 0.33-DEV a52db97d8 fixing typos and syntax for consistency 64525670f ádd title to some menu entries. This needs hugo >= v0.32 85d415ab2 ádd examples for menu .Title and .Page git-subtree-dir: docs git-subtree-split: dce236ad1258a9d9a0ee209f02b2e1f65b46f0fb
286 lines
9.7 KiB
Markdown
286 lines
9.7 KiB
Markdown
---
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title: Page Variables
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linktitle:
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description: Page-level variables are defined in a content file's front matter, derived from the content's file location, or extracted from the content body itself.
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date: 2017-02-01
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publishdate: 2017-02-01
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lastmod: 2017-02-01
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categories: [variables and params]
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keywords: [pages]
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draft: false
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menu:
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docs:
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title: "variables defined by a page"
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parent: "variables"
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weight: 20
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weight: 20
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sections_weight: 20
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aliases: [/variables/page/]
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toc: true
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---
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The following is a list of page-level variables. Many of these will be defined in the front matter, derived from file location, or extracted from the content itself.
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{{% note "`.Scratch`" %}}
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See [`.Scratch`](/functions/scratch/) for page-scoped, writable variables.
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{{% /note %}}
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## Page Variables
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.AlternativeOutputFormats
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: contains all alternative formats for a given page; this variable is especially useful `link rel` list in your site's `<head>`. (See [Output Formats](/templates/output-formats/).)
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.Content
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: the content itself, defined below the front matter.
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.Data
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: the data specific to this type of page.
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.Date
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: the date associated with the page; `.Date` pulls from the `date` field in a content's front matter. See also `.ExpiryDate`, `.PublishDate`, and `.Lastmod`.
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.Description
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: the description for the page.
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.Dir
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: the path of the folder containing this content file. The path is relative to the `content` folder.
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.Draft
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: a boolean, `true` if the content is marked as a draft in the front matter.
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.ExpiryDate
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: the date on which the content is scheduled to expire; `.ExpiryDate` pulls from the `expirydate` field in a content's front matter. See also `.PublishDate`, `.Date`, and `.Lastmod`.
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.File
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: filesystem-related data for this content file. See also [File Variables][].
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.FuzzyWordCount
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: the approximate number of words in the content.
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.Hugo
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: see [Hugo Variables](/variables/hugo/).
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.IsHome
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: `true` in the context of the [homepage](/templates/homepage/).
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.IsNode
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: always `false` for regular content pages.
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.IsPage
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: always `true` for regular content pages.
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.IsTranslated
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: `true` if there are translations to display.
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.Keywords
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: the meta keywords for the content.
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.Kind
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: the page's *kind*. Possible return values are `page`, `home`, `section`, `taxonomy`, or `taxonomyTerm`. Note that there are also `RSS`, `sitemap`, `robotsTXT`, and `404` kinds, but these are only available during the rendering of each of these respective page's kind and therefore *not* available in any of the `Pages` collections.
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.Lang
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: language taken from the language extension notation.
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.Language
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: a language object that points to the language's definition in the site
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`config`.
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.Lastmod
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: the date the content was last modified. `.Lastmod` pulls from the `lastmod` field in a content's front matter.
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- If `lastmod` is not set, and `.GitInfo` feature is disabled, the front matter `date` field will be used.
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- If `lastmod` is not set, and `.GitInfo` feature is enabled, `.GitInfo.AuthorDate` will be used instead.
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See also `.ExpiryDate`, `.Date`, `.PublishDate`, and [`.GitInfo`][gitinfo].
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.LinkTitle
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: access when creating links to the content. If set, Hugo will use the `linktitle` from the front matter before `title`.
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.Next
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: pointer to the following content (based on the `publishdate` field in front matter).
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.NextInSection
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: pointer to the following content within the same section (based on `publishdate` field in front matter).
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.OutputFormats
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: contains all formats, including the current format, for a given page. Can be combined the with [`.Get` function](/functions/get/) to grab a specific format. (See [Output Formats](/templates/output-formats/).)
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.Pages
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: a collection of associated pages. This value will be `nil` for regular content pages. `.Pages` is an alias for `.Data.Pages`.
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.Permalink
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: the Permanent link for this page; see [Permalinks](/content-management/urls/)
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.Plain
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: the Page content stripped of HTML tags and presented as a string.
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.PlainWords
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: the Page content stripped of HTML as a `[]string` using Go's [`strings.Fields`](https://golang.org/pkg/strings/#Fields) to split `.Plain` into a slice.
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.Prev
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: Pointer to the previous content (based on `publishdate` in front matter).
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.PrevInSection
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: Pointer to the previous content within the same section (based on `publishdate` in front matter). For example, `{{if .PrevInSection}}{{.PrevInSection.Permalink}}{{end}}`.
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.PublishDate
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: the date on which the content was or will be published; `.Publishdate` pulls from the `publishdate` field in a content's front matter. See also `.ExpiryDate`, `.Date`, and `.Lastmod`.
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.RSSLink
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: link to the taxonomies' RSS link.
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.RawContent
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: raw markdown content without the front matter. Useful with [remarkjs.com](
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http://remarkjs.com)
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.ReadingTime
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: the estimated time, in minutes, it takes to read the content.
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.Ref
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: returns the permalink for a given reference (e.g., `.Ref "sample.md"`). `.Ref` does *not* handle in-page fragments correctly. See [Cross References](/content-management/cross-references/).
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.RelPermalink
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: the relative permanent link for this page.
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.RelRef
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: returns the relative permalink for a given reference (e.g., `RelRef
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"sample.md"`). `.RelRef` does *not* handle in-page fragments correctly. See [Cross References](/content-management/cross-references/).
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.Site
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: see [Site Variables](/variables/site/).
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.Summary
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: a generated summary of the content for easily showing a snippet in a summary view. The breakpoint can be set manually by inserting <code><!--more--></code> at the appropriate place in the content page. See [Content Summaries](/content-management/summaries/) for more details.
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.TableOfContents
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: the rendered [table of contents](/content-management/toc/) for the page.
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.Title
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: the title for this page.
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.Translations
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: a list of translated versions of the current page. See [Multilingual Mode](/content-management/multilingual/) for more information.
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.Truncated
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: a boolean, `true` if the `.Summary` is truncated. Useful for showing a "Read more..." link only when necessary. See [Summaries](/content-management/summaries/) for more information.
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.Type
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: the [content type](/content-management/types/) of the content (e.g., `post`).
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.URL
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: the URL for the page relative to the web root. Note that a `url` set directly in front matter overrides the default relative URL for the rendered page.
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.UniqueID
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: the MD5-checksum of the content file's path.
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.Weight
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: assigned weight (in the front matter) to this content, used in sorting.
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.WordCount
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: the number of words in the content.
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## Section Variables and Methods
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Also see [Sections](/content-management/sections/).
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{{< readfile file="/content/readfiles/sectionvars.md" markdown="true" >}}
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## Page-level Params
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Any other value defined in the front matter in a content file, including taxonomies, will be made available as part of the `.Params` variable.
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```
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---
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title: My First Post
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date: 2017-02-20T15:26:23-06:00
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categories: [one]
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tags: [two,three,four]
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```
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With the above front matter, the `tags` and `categories` taxonomies are accessible via the following:
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* `.Params.tags`
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* `.Params.categories`
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{{% note "Casing of Params" %}}
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Page-level `.Params` are *only* accessible in lowercase.
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{{% /note %}}
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The `.Params` variable is particularly useful for the introduction of user-defined front matter fields in content files. For example, a Hugo website on book reviews could have the following front matter in `/content/review/book01.md`:
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```
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---
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...
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affiliatelink: "http://www.my-book-link.here"
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recommendedby: "My Mother"
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...
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---
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```
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These fields would then be accessible to the `/themes/yourtheme/layouts/review/single.html` template through `.Params.affiliatelink` and `.Params.recommendedby`, respectively.
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Two common situations where this type of front matter field could be introduced is as a value of a certain attribute like `href=""` or by itself to be displayed as text to the website's visitors.
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{{< code file="/themes/yourtheme/layouts/review/single.html" >}}
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<h3><a href={{ printf "%s" $.Params.affiliatelink }}>Buy this book</a></h3>
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<p>It was recommended by {{ .Params.recommendedby }}.</p>
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{{< /code >}}
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This template would render as follows, assuming you've set [`uglyURLs`](/content-management/urls/) to `false` in your [site `config`](/getting-started/configuration/):
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{{< output file="yourbaseurl/review/book01/index.html" >}}
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<h3><a href="http://www.my-book-link.here">Buy this book</a></h3>
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<p>It was recommended by my Mother.</p>
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{{< /output >}}
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{{% note %}}
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See [Archetypes](/content-management/archetypes/) for consistency of `Params` across pieces of content.
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{{% /note %}}
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### The `.Param` Method
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In Hugo, you can declare params in individual pages and globally for your entire website. A common use case is to have a general value for the site param and a more specific value for some of the pages (i.e., a header image):
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```
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{{ $.Param "header_image" }}
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```
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The `.Param` method provides a way to resolve a single value according to it's definition in a page parameter (i.e. in the content's front matter) or a site parameter (i.e., in your `config`).
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### Access Nested Fields in Front Matter
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When front matter contains nested fields like the following:
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```
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---
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author:
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given_name: John
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family_name: Feminella
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display_name: John Feminella
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---
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```
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`.Param` can access these fields by concatenating the field names together with a dot:
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```
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{{ $.Param "author.display_name" }}
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```
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If your front matter contains a top-level key that is ambiguous with a nested key, as in the following case:
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```
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---
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favorites.flavor: vanilla
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favorites:
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flavor: chocolate
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---
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```
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The top-level key will be preferred. Therefore, the following method, when applied to the previous example, will print `vanilla` and not `chocolate`:
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```
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{{ $.Param "favorites.flavor" }}
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=> vanilla
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```
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[gitinfo]: /variables/git/
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[File Variables]: /variables/files/
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