Golang Mongo Search example

main.go

package main

import (
	"context"
	"fmt"
	"log"
	"time"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
	"go.mongodb.org/mongo-driver/mongo/options"
)

type price struct {
	Cents        int32
	Currency_ISO string
}

type Product struct {
	Id            primitive.ObjectID `bson:"_id"`
	Vehicle_Model string
	Price         price
}

func main() {

	context, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	client, err := mongo.Connect(context, options.Client().ApplyURI("mongodb://localhost:27017"))
	defer func() {
		if err = client.Disconnect(context); err != nil {
			panic(err)
		}
	}()

	err = client.Connect(context)
	collection := client.Database("autocommerce_development").Collection("products")

	options := options.Find()
	options.SetSort(bson.D{{"vehicle_model", -1}})
	options.SetLimit(10)

	filters := bson.M{
		"price.cents": bson.M{"$gt": 20000.0 * 100},
		"vehicle_model": bson.D{
			{"$regex", primitive.Regex{Pattern: "Modelo"}},
		},
	}

	cursor, err := collection.Find(context, filters, options)
	defer cursor.Close(context)

	if err != nil {
		log.Fatal(err)
	}

	var results []Product

	for cursor.Next(context) {

		var result Product
		err := cursor.Decode(&result)

		if err != nil {
			log.Fatal(err)
		}

		results = append(results, result)
	}

	if err := cursor.Err(); err != nil {
		log.Fatal(err)
	}

	for _, product := range results {
		//https: //golang.org/pkg/fmt/
		fmt.Printf("%+v\n", product)
	}

}