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81 lines
2 KiB
Markdown
81 lines
2 KiB
Markdown
---
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aliases:
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- /doc/redirects/
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- /doc/alias/
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- /doc/aliases/
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date: 2013-07-09
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menu:
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main:
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parent: extras
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next: /extras/builders
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prev: /taxonomies/ordering
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title: Aliases
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weight: 10
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---
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For people migrating existing published content to Hugo, there's a good chance you need a mechanism to handle redirecting old URLs.
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Luckily, redirects can be handled easily with _aliases_ in Hugo.
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## Example
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Given a post on your current Hugo site, with a path of:
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``content/posts/my-awesome-blog-post.md``
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... you create an "aliases" section in the frontmatter of your post, and add previous paths to that.
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### TOML frontmatter
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~~~yaml
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+++
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...
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aliases = [
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"/posts/my-original-url/",
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"/2010/01/01/even-earlier-url.html"
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]
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...
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+++
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~~~
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### YAML frontmatter
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~~~yaml
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---
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...
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aliases:
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- /posts/my-original-url/
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- /2010/01/01/even-earlier-url.html
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...
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---
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~~~
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Now when you visit any of the locations specified in aliases, _assuming the same site domain_, you'll be redirected to the page they are specified on.
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## Important Behaviors
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1. *Hugo makes no assumptions about aliases. They also don't change based
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on your UglyURLs setting. You need to provide absolute path to your webroot and the
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complete filename or directory.*
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2. *Aliases are rendered prior to any content and will be overwritten by
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any content with the same location.*
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## How Hugo Aliases Work
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When aliases are specified, Hugo creates a physical folder structure to match the alias entry, and, an html file specifying the canonical URL for the page, and a redirect target.
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Assuming a baseurl of `mysite.tld`, the contents of the html file will look something like:
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~~~html
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<!DOCTYPE html>
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<html>
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<head>
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<link rel="canonical" href="http://mysite.tld/posts/my-original-url"/>
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<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
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<meta http-equiv="refresh" content="0;url=http://mysite.tld/posts/my-original-url"/>
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</head>
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</html>
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~~~
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The `http-equiv="refresh"` line is what performs the redirect, in 0 seconds in this case.
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