How to iterate over yml sections with structs?

I use viper. I'm trying to get info from structs with yml-config.

type Config struct {
    Account       User           `mapstructure:"user"`      
}

type User struct {
    Name       string           `mapstructure:"name"`
    Contacts   []Contact        `mapstructure:"contact"`
}

type Contact struct {
    Type          string          `mapstructure:"type"`
    Value         string          `mapstructure:"value"`
}

func Init() *Config {
    conf := new(Config)

    viper.SetConfigType("yaml")
    viper.ReadInConfig()
    ...
    viper.Unmarshal(conf)
    return conf
}

...
config := Init()
...
for _, contact := range config.Account.Contacts {
   type := contact.type
   vlaue := contact.value
}

And config.yml

user:
  name: John
  contacts:
    email:
      type: email
      value: test@test.com
    skype:
      type: skype
      value: skypeacc

Can I get structure items like this? I could not get contact data like that. Is it possible?

I think the only significant problem is that in your data structures you've declared Contacts as a list, but in your YAML file it's a dictionary. If you structure your input file like this:

user:
  name: John
  contacts:
    - type: email
      value: test@test.com
    - type: skype
      value: skypeacc

Then you can read it like this:

package main

import (
    "fmt"

    "github.com/spf13/viper"
)

type Config struct {
    User User
}

type User struct {
    Name     string
    Contacts []Contact
}

type Contact struct {
    Type  string
    Value string
}

func main() {
    var cfg Config

    viper.SetConfigName("config")
    viper.AddConfigPath(".")
    err := viper.ReadInConfig()
    if err != nil {
        panic(err)
    }
    viper.Unmarshal(&cfg)
    fmt.Println("user: ", cfg.User.Name)
    for _, contact := range cfg.User.Contacts {
        fmt.Println("  ", contact.Type, ": ", contact.Value)
    }
}

The above code is runnable as-is; you should just be able to drop it into a file and build it. When I run the above example, I get as output:

user:  John
   email :  test@test.com
   skype :  skypeacc