如何将多个变量传递给Go HTML模板

Question

I am new to golang. I would like to pass multiple variables to html. So I have a type like:

type Variables struct { 
    UserNames    []string  
    Checks       []string
}

pagevarible with passed the correct values

var PageVars Variables
    PageVars = Variables{
        UserNames: ulist,
        Checks: check,
    }
    log.Println("ulist",ulist)
    err = tpl.Execute(w, PageVars) //execute the template and pass it to index page
    if err != nil { // if there is an error
        log.Print("template executing error: ", err) //log it on terminal
    }

And I want to pass both UserNames and Checks to html template, something like:

{{range .UserNames .Checks}}
{{.UserNames}}: <input type="checkbox" name="email" value={{. UserNames}} {{.Checks}}/><br />
{{end}}

But it didn't work out. Can anyone correct my syntax? Thanks a lot.

Answer 1

Range with an index variable, use that index to get the check:

{{range $i, $user := .UserNames}}
{{$check := index $.Checks $i}}
{{$user}}: <input type="checkbox" name="email" value={{$user}} {{$check}}/><br />
{{end}}

Range sets the cursor . to successive values of the slice. Use $ to reference the Checks field in the argument to the template.

playground example