英文:
Golang Template property of struct in Index
问题
我有一个使用golang模板的json字符串。有没有办法打印出{{index .Apps 1}}的Name属性？以下是我正在运行的代码。在第31行，我试图只打印Apps[0]的Name属性。
package main
import (
"encoding/json"
"os"
"text/template"
)
type Message struct {
Name string
Id int
Apps []App
Company Company
}
type App struct {
Name string `json:"name"`
Device string `json:"device"`
}
type Company struct {
UserId string
}
func main() {
msg := []byte(`{
"Name":"Bob",
"Id":1,
"apps":[{"name":"app1","device":"ios"},{"name":"app2","device":"android"},{"name":"app3","device":"ios"}],
"company":
{
"userId":"{{.Name}}-{{.Id}}",
"app":["{{index .Apps 0}}","{{index .Apps 1}}"]
}
}`)
var m Message
json.Unmarshal(msg, &m)
t := template.New("My template")
t, _ = t.Parse(string(msg))
t.Execute(os.Stdout, m)
}
英文:
I have a json string that uses golang Template. Is there a way to print the Name property of {{index .Apps 1}}? Below is the code I am running. On line 31, I am trying to just print the Name property of Apps[0].
http://play.golang.org/p/4RNevdqxP1
package main
import (
"encoding/json"
"os"
"text/template"
)
type Message struct {
Name string
Id int
Apps []App
Company Company
}
type App struct {
Name string `json:"name"`
Device string `json:"device"`
}
type Company struct {
UserId string
}
func main() {
msg := []byte(`{
"Name":"Bob",
"Id":1,
"apps":[{"name":"app1","device":"ios"},{"name":"app2","device":"android"}, {"name":"app3","device":"ios"}],
"company":
{
"userId":"{{.Name}}-{{.Id}}",
"app":["{{index .Apps 0}}","{{index .Apps 1}}"]
}
}`)
var m Message
json.Unmarshal(msg, &m)
t := template.New("My template")
t, _ = t.Parse(string(msg))
t.Execute(os.Stdout, m)
}
答案1
得分: 7
你可以用括号将其包裹起来：
{{(index .Apps 1).Name}}
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