How to get all element from mongoDB array using go? -

i new mongodb , golang. have collection named "myplace" inside that, 1 field named region array of values how can retrieve whole array.

my collection likes

{ "_id" : objectid("5474227309d76eb732acd134"), "city" : "some city", "region" : [      {         "regionid" : "31",         "historical_place" : "temple"      },      {         "regionid" : "32",         "historical_place" : "temple"     },      {          "regionid" : "33",         "historical_place" : "temple"      } ] } 

expecting output

 [   {     "city": "some city",     "region":[       {         "regionid" : "31",         "historical_place" : "temple"       },      {         "regionid" : "32",         "historical_place" : "temple"     },      {          "regionid" : "33",         "historical_place" : "temple"      }    ]   } ] 

any solution?

create structs bson tags , use mgo's find().all(). , if need json output, use encoding/json package , marshalindent() function:

package main  import (     "encoding/json"     "fmt"     "gopkg.in/mgo.v2"     "gopkg.in/mgo.v2/bson"     "log" )  type city struct {     id     bson.objectid `bson:"_id,omitempty" json:"-"`     name   string        `bson:"city"`     region []place       `bson:"region"` }  type place struct {     regionid  string `bson:"regionid"`     histplace string `bson:"historical_place"` }  func main() {     session, err := mgo.dial("127.0.0.1")     if err != nil {         panic(err)     }     defer session.close()      c := session.db("db").c("myplaces")      var cities []city     err = c.find(nil).all(&cities)     if err != nil {         log.fatal(err)     }      out, err := json.marshalindent(cities, " ", " ")     if err != nil {         log.fatal(err)     }     fmt.println("result:", string(out)) }