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68 lines
2.1 KiB
Markdown
68 lines
2.1 KiB
Markdown
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---
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title: urls.RelLangURL
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description: Returns a relative URL with a language prefix, if any.
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categories: []
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keywords: []
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action:
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aliases: [relLangURL]
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related:
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- functions/urls/AbsLangURL
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- functions/urls/AbsURL
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- functions/urls/RelURL
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returnType: string
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signatures: [urls.RelLangURL INPUT]
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aliases: [/functions/rellangurl]
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---
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Use this function with both monolingual and multilingual configurations. The URL returned by this function depends on:
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- Whether the input begins with a slash
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- The `baseURL` in site configuration
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- The language prefix, if any
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In examples that follow, the project is multilingual with content in both Español (`es`) and English (`en`). The default language is Español. The returned values are from the English site.
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### Input does not begin with a slash
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If the input does not begin with a slash, the resulting URL will be correct regardless of the `baseURL`.
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With `baseURL = https://example.org/`
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```go-html-template
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{{ relLangURL "" }} → /en/
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{{ relLangURL "articles" }} → /en/articles
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{{ relLangURL "style.css" }} → /en/style.css
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```
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With `baseURL = https://example.org/docs/`
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```go-html-template
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{{ relLangURL "" }} → /docs/en/
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{{ relLangURL "articles" }} → /docs/en/articles
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{{ relLangURL "style.css" }} → /docs/en/style.css
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```
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#### Input begins with a slash
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If the input begins with a slash, the resulting URL will be incorrect when the `baseURL` includes a subdirectory. With a leading slash, the function returns a URL relative to the protocol+host section of the `baseURL`.
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With `baseURL = https://example.org/`
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```go-html-template
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{{ relLangURL "/" }} → /en/
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{{ relLangURL "/articles" }} → /en/articles
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{{ relLangURL "/style.css" }} → /en/style.css
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```
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With `baseURL = https://example.org/docs/`
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```go-html-template
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{{ relLangURL "/" }} → /en/
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{{ relLangURL "/articles" }} → /en/articles
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{{ relLangURL "/style.css" }} → /en/style.css
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```
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{{% note %}}
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The last three examples are not desirable in most situations. As a best practice, never include a leading slash when using this function.
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{{% /note %}}
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