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Add variable re-definition example (Hugo v0.48+)

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Kaushal Modi 2018-09-04 17:24:52 -04:00
parent 21123967eb
commit 30b060dff7
1 changed files with 18 additions and 2 deletions
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content/en/templates/introduction.md
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@ -96,12 +96,28 @@ The custom variables need to be prefixed with `$`.
```
{{% warning %}}
Variables defined inside `if` conditionals and similar are not visible on the outside. See [https://github.com/golang/go/issues/10608](https://github.com/golang/go/issues/10608).
For Hugo v0.47 and older versions, variables defined inside `if`
conditionals and similar are not visible on the outside.
See [https://github.com/golang/go/issues/10608](https://github.com/golang/go/issues/10608).
Hugo has created a workaround for this issue in [Scratch](/functions/scratch).
{{% /warning %}}
For **Hugo v0.48** and newer, variables can be re-defined using the
new `=` operator (new in Go 1.11).
Below example will work only in these newer Hugo versions. The example
prints "Var is Hugo Home" on the home page, and "Var is Hugo Page" on
all other pages:
```go-html-template
{{ $var := "Hugo Page" }}
{{ if .IsHome }}
{{ $var = "Hugo Home" }}
{{ end }}
Var is {{ $var }}
```
## Functions
Go Templates only ship with a few basic functions but also provide a mechanism for applications to extend the original set.