golang mongo fetch doc
import "go.mongodb.org/mongo-driver/mongo"
// Inside a func
// Set up the client
host := fmt.Sprintf("mongodb://%s:%s@%s:%s",
"username",
"password",
"127.0.0.1",
"27017")
client, err := mongo.Connect(context.Background(), options.Client().ApplyURI(host))
if err != nil {
log.Fatal(err)
}
// Run the query
col := client.Database("database_name").Collection("collection_name")
result := col.FindOne(context.Background(), bson.M{"filter_key":"filter_value"})
if result.Err() == mongo.ErrNoDocuments {
// return nil
}
// Decode the value into a map or struct containing bson tags. e.g. type S struct { Name string `bson:"firstName"` }
var m map[string]interface{}
if err := result.Decode(&m); err != nil {
log.Fatal(err)
}
//return m