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safe.URL

Introduction​

Usage​

Use the safe.URL function to encapsulate a known safe URL or URL substring. Schemes other than the following are considered unsafe:

  • http:
  • https:
  • mailto:

Use of this type presents a security risk: the encapsulated content should come from a trusted source, as it will be included verbatim in the template output.

See the Go documentation for details.

Example​

Without a safe declaration:

{{ $href := "irc://irc.freenode.net/#golang" }}
<a href="{{ $href }}">IRC</a>

Hugo renders the above to:

<a href="#ZgotmplZ">IRC</a>

ZgotmplZ is a special value that indicates that unsafe content reached a CSS or URL context at runtime.

To declare the string as safe:

{{ $href := "irc://irc.freenode.net/#golang" }}
<a href="{{ $href | safeURL }}">IRC</a>

Hugo renders the above to:

<a href="irc://irc.freenode.net/#golang">IRC</a>