Go and MongoDb Error: has no field or method

I am new in Golang. While trying to extract password from the MongoDb query result, I got the following error:

> "./1.go:73: results.password undefined (type []Person has no field or method password)"

The error is caused by the second last line in the code.

How can we separate the query result?

Code:

package main
import ("fmt""html/template""log""net/http""reflect""gopkg.in/mgo.v2/bson""gopkg.in/mgo.v2")
type login struct {
UserName string
Password  string
}
type Person struct {
ID        bson.ObjectId `bson:"_id,omitempty"`
FirstName      string	
LastName     string	
Email		string
Password	string
}
func main() {
// DB Connection
session, err := mgo.Dial(":27017")
if err != nil {
panic(err)
}
defer session.Close()
c := session.DB("reg").C("people")
session.SetMode(mgo.Monotonic, true)
// parse template
tpl, err := template.ParseFiles("Login.html")
if err != nil {
log.Fatalln(err)
}
http.HandleFunc("/", func(res http.ResponseWriter, req *http.Request)    {
// receive form submission
uname := req.FormValue("username")
pwd := req.FormValue("password")
fmt.Println("fName: ", uname)
fmt.Println("[]byte(uname): ", []byte(uname))
fmt.Println("typeOf: ", reflect.TypeOf(uname))
fmt.Println("pwd : ", pwd)
fmt.Println("[]byte(pwd ): ", []byte(pwd))
fmt.Println("typeOf: ", reflect.TypeOf(pwd))
// execute template
err = tpl.Execute(res, login{uname,pwd})
if err != nil {
http.Error(res, err.Error(), 500)
log.Fatalln(err)
}
//DB access
var results []Person
err = c.Find(bson.M{"firstname": uname}).Sort("-id").All(&results)
if err != nil {
panic(err)
}
fmt.Println("Results All: ", results)
//Next Line Causes Error....
fmt.Println("New Password ", results.password)
})
http.ListenAndServe(":9000", nil)
}

Your results variable is a slice of Persons:

var results []Person

Password is a field of Person. So this line:

fmt.Println("New Password ", results.password)

Is a compile time error because password is not a field (or method) of the type []Person (also note that password is different from Password).

You may refer to the first element of the slice like this:

if len(results) > 0 {
fmt.Println("New Password:", results[0].Password)
} else {
fmt.Println("No peope")
}