访问我模板中的结构数组

Question

I'm passing an array of structs to my template, the data is there but I can't find a way to access specific data, I tried many things already, here it is

My Struct

type Data struct {
  Destination string
  IData interface{}
}

then in my controller I have

users := []models.User {}

userRow := models.User{Name: "jon", Email: "[e-mail]"}
users = append(users, userRow)
users2 := users

data := models.Data{
    Destination: "content",
    IData: users,
}

data2 := models.Data{
    Destination: "content",
    IData: users2,
}

dataFinal := []models.Data{}
dataFinal = append(dataFinal, data)
dataFinal = append(dataFinal, data2)

and this is my template, though this didn't seem to work, it does show the raw data but can't seem to access the name specifically.

{{define "content"}}
<h2>THIS IS THE BODY CONTENT</h2>

<ul>
    {{.}}
    {{range .}}
    <li>{{.}}</li>
    {{end}}
</ul>
{{end}}

edit: project: https://github.com/og2/go-og2-mvc

you may wanna run:

go get github.com/go-sql-driver/mysql

go get github.com/julienschmidt/httprouter

for it to work and should be just fine!

Answer 1

If the pipeline value that you pass to the "content" template execution is dataFinal, then you have to use two {{range}} actions as dataFinal itself is a slice (of type []models.Data), and Data.IData is also a slice (of type []model.User).

Inside the inner {{range}} you may refer to the User.Name like .Name:

<li>{{.Name}}</li>

See this working example:

const templ = `{{define "content"}}
<h2>THIS IS THE BODY CONTENT</h2>

<ul>
    {{.}}
    {{range .}}
    <ul>
       {{range .IData}}
       <li>{{.Name}}</li>
       {{end}}
    </ul>
    {{end}}
</ul>
{{end}}`

// Parsing and executing the template:
t := template.Must(template.New("").Parse(templ))
fmt.Println(t.ExecuteTemplate(os.Stdout, "content", dataFinal))

Output (try it on the Go Playground):

<h2>THIS IS THE BODY CONTENT</h2>

<ul>
    [{content [{jon [e-mail]}]} {content [{jon [e-mail]}]}]

    <ul>

       <li>jon</li>

    </ul>

    <ul>

       <li>jon</li>

    </ul>

</ul>
<nil>