mirror of
https://github.com/gohugoio/hugo.git
synced 2024-12-05 05:24:53 -05:00
35 lines
1.4 KiB
Markdown
35 lines
1.4 KiB
Markdown
---
|
|
title: with
|
|
# linktitle: with
|
|
description: Rebinds the context (`.`) within its scope and skips the block if the variable is absent or empty.
|
|
godocref:
|
|
date: 2017-02-01
|
|
publishdate: 2017-02-01
|
|
lastmod: 2017-03-12
|
|
categories: [functions]
|
|
menu:
|
|
docs:
|
|
parent: "functions"
|
|
keywords: [conditionals]
|
|
signature: ["with INPUT"]
|
|
workson: []
|
|
hugoversion:
|
|
relatedfuncs: []
|
|
deprecated: false
|
|
---
|
|
|
|
An alternative way of writing an `if` statement and then referencing the same value is to use `with` instead. `with` rebinds the context (`.`) within its scope and skips the block if the variable is absent, unset or empty.
|
|
|
|
The set of *empty* values is defined by [the Go templates package](https://golang.org/pkg/text/template/). Empty values include `false`, the number zero, and the empty string.
|
|
|
|
If you want to render a block if an index or key is present in a slice, array, channel or map, regardless of whether the value is empty, you should use [`isset`](/functions/isset) instead.
|
|
|
|
The following example checks for a [user-defined site variable](/variables/site/) called `twitteruser`. If the key-value is not set, the following will render nothing:
|
|
|
|
{{< code file="layouts/partials/twitter.html" >}}
|
|
{{with .Site.Params.twitteruser}}<span class="twitter">
|
|
<a href="https://twitter.com/{{.}}" rel="author">
|
|
<img src="/images/twitter.png" width="48" height="48" title="Twitter: {{.}}"
|
|
alt="Twitter"></a>
|
|
</span>{{end}}
|
|
{{< /code >}}
|