Is it possible, within a {{range pipeline}} T1 {{end}}
action in the text/template
package to access the pipelines value prior to the range action, or the parent/global pipeline passed as an argument to Execute?
Working example that shows what I try to do:
package main
import (
"os"
"text/template"
)
// .Path won't be accessible, because dot will be changed to the Files element
const page = `{{range .Files}}<script src="{{html .Path}}/js/{{html .}}"></script>{{end}}`
type scriptFiles struct {
Path string
Files []string
}
func main() {
t := template.New("page")
t = template.Must(t.Parse(page))
t.Execute(os.Stdout, &scriptFiles{"/var/www", []string{"go.js", "lang.js"}})
}
Using the $ variable (recommended)
From the package text/template documentation:
When execution begins, $ is set to the data argument passed to Execute, that is, to the starting value of dot.
As @Sandy points out, it is therefore possible to access the Path in the outer scope using $.Path
.
const page = `{{range .Files}}<script src="{{html $.Path}}/js/{{html .}}"></script>{{end}}`
Using a custom variable (old answer)
Found one answer just minutes after posting.
By using a variable, a value can be passed into the range
scope:
const page = `{{$p := .Path}}{{range .Files}}<script src="{{html $p}}/js/{{html .}}"></script>{{end}}`