How can I pass the index of an array to a template? I know I can do something like this to access the first element:
{{ with index . 0 }}
but I need to do something like this:
{{ template "mytemp" index . 0 }}
which doesn't seem to work. I also tried this which didn't work:
{{ with index . 0 }}
{{ template "mytemp" . }}
{{ end }}
I can't seem to figure out how to achieve this.
You need the index action, you can read more about it in the documentation. Here is a working example:
package main
import (
"log"
"os"
"text/template"
)
type Inventory struct {
Material []string
Count uint
}
func main() {
sweaters := Inventory{[]string{"wool"}, 17}
tmpl, err := template.New("test").Parse("{{.Count}} items are made of {{index .Material 0}}")
if err != nil {
log.Fatal(err)
}
err = tmpl.Execute(os.Stdout, sweaters)
if err != nil {
log.Fatal(err)
}
}
Here's another example:
package main
import (
"os"
"text/template"
)
func main() {
data:=map[string]interface{}{ "item": []interface{}{"str1","str2"}}
tmpl, _ := template.New("test").Parse(`Some text
{{define "mytp"}}
{{.}}
{{end}}
{{template "mytp" index .item 0}}`)
tmpl.Execute(os.Stdout, data)
}
