Golang can't change template variable value

Question

I have this code: http://play.golang.org/p/mPX1azLhlg but why I can't change my $foo value? How I supposed to do this?

Take a look at jan.newmarch.name/go/template/chapter-template.html — elithrar
– elithrar, Commented Jul 21, 2014 at 9:01

Andy Gardner · Accepted Answer · 2019-04-15 10:37:13Z

3

This seems to have been updated in go1.11: https://golang.org/doc/go1.11#text/template

Modifying template variables via assignments is now permitted via the = token

So you need to change {{$foo := 1}} to {{$foo = 1}}

https://play.golang.org/p/hqWClmZfjcx

answered Apr 15, 2019 at 10:37

Andy Gardner

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paq · Accepted Answer · 2014-07-21 08:21:18Z

2

A variable's scope extends to the "end" action of the control structure ("if", "with", or "range") in which it is declared, or to the end of the template if there is no such control structure.

(http://golang.org/pkg/text/template/)

answered Jul 21, 2014 at 8:21

paq

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2 Comments

cnaize Over a year ago

how can I bypass this restriction?

paq Over a year ago

You can define everything you need outside the template (in the go code), and then pass it inside.

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