Buscar documentos

filter := bson.D{
	{"$and",
		bson.A{
			bson.D{{"rating", bson.D{{"$gt", 5}}}},
			bson.D{{"rating", bson.D{{"$lt", 9}}}},
		}},
}
sort := bson.D{{"date_ordered", 1}}
opts := options.Find().SetSort(sort)
// Retrieves documents that match the filter and prints them as structs
cursor, err := coll.Find(context.TODO(), filter, opts)
if err != nil {
	panic(err)
}
var results []Tea
if err = cursor.All(context.TODO(), &results); err != nil {
	panic(err)
}
for _, result := range results {
	res, _ := bson.MarshalExtJSON(result, false, false)
	fmt.Println(string(res))
}

// Retrieves documents that match a query filter by using the Go driver
package main
import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"os"
	"github.com/joho/godotenv"
	"go.mongodb.org/mongo-driver/v2/bson"
	"go.mongodb.org/mongo-driver/v2/mongo"
	"go.mongodb.org/mongo-driver/v2/mongo/options"
)
// Creates a Restaurant struct as a model for documents in the restaurants collection
type Restaurant struct {
	ID           bson.ObjectID `bson:"_id"`
	Name         string
	RestaurantId string `bson:"restaurant_id"`
	Cuisine      string
	Address      any
	Borough      string
	Grades       any
}
func main() {
	if err := godotenv.Load(); err != nil {
		log.Println("No .env file found")
	}
	var uri string
	if uri = os.Getenv("MONGODB_URI"); uri == "" {
		log.Fatal("You must set your 'MONGODB_URI' environment variable. See\n\t https://www.mongodb.com/es/docs/drivers/go/current/connect/mongoclient/#environment-variable")
	}
	client, err := mongo.Connect(options.Client().ApplyURI(uri))
	if err != nil {
		panic(err)
	}
	defer func() {
		if err = client.Disconnect(context.TODO()); err != nil {
			panic(err)
		}
	}()
	coll := client.Database("sample_restaurants").Collection("restaurants")
	// Creates a query filter to match documents in which the "cuisine"
	// is "Italian"
	filter := bson.D{{"cuisine", "Italian"}}
	// Retrieves documents that match the query filter
	cursor, err := coll.Find(context.TODO(), filter)
	if err != nil {
		panic(err)
	}
	// Unpacks the cursor into a slice
	var results []Restaurant
	if err = cursor.All(context.TODO(), &results); err != nil {
		panic(err)
	}
	// Prints the results of the find operation as structs
	for _, result := range results {
		output, err := json.MarshalIndent(result, "", "    ")
		if err != nil {
			panic(err)
		}
		fmt.Printf("%s\n", output)
	}
}

filter := bson.D{{"date_ordered", bson.D{{"$lte", time.Date(2009, 11, 30, 0, 0, 0, 0, time.Local)}}}}
opts := options.FindOne().SetSkip(2)
// Retrieves a document that matches the filter and prints it as
// a struct
var result Tea
err = coll.FindOne(context.TODO(), filter, opts).Decode(&result)
if err != nil {
	if err == mongo.ErrNoDocuments {
		fmt.Println("No documents found")
	} else {
		panic(err)
	}
}
res, _ := bson.MarshalExtJSON(result, false, false)
fmt.Println(string(res))

// Retrieves a document that matches a query filter by using the Go driver
package main
import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"os"
	"github.com/joho/godotenv"
	"go.mongodb.org/mongo-driver/v2/bson"
	"go.mongodb.org/mongo-driver/v2/mongo"
	"go.mongodb.org/mongo-driver/v2/mongo/options"
)
// Creates a Restaurant struct as a model for documents in the restaurants collection
type Restaurant struct {
	ID           bson.ObjectID `bson:"_id"`
	Name         string
	RestaurantId string `bson:"restaurant_id"`
	Cuisine      string
	Address      any
	Borough      string
	Grades       []any
}
func main() {
	if err := godotenv.Load(); err != nil {
		log.Println("No .env file found")
	}
	var uri string
	if uri = os.Getenv("MONGODB_URI"); uri == "" {
		log.Fatal("You must set your 'MONGODB_URI' environment variable. See\n\t https://www.mongodb.com/es/docs/drivers/go/current/connect/mongoclient/#environment-variable")
	}
	client, err := mongo.Connect(options.Client().ApplyURI(uri))
	if err != nil {
		panic(err)
	}
	defer func() {
		if err = client.Disconnect(context.TODO()); err != nil {
			panic(err)
		}
	}()
	coll := client.Database("sample_restaurants").Collection("restaurants")
	// Creates a query filter to match documents in which the "name" is
	// "Bagels N Buns"
	filter := bson.D{{"name", "Bagels N Buns"}}
	// Retrieves the first matching document
	var result Restaurant
	err = coll.FindOne(context.TODO(), filter).Decode(&result)
	// Prints a message if no documents are matched or if any
	// other errors occur during the operation
	if err != nil {
		if err == mongo.ErrNoDocuments {
			return
		}
		panic(err)
	}
	output, err := json.MarshalIndent(result, "", "    ")
	if err != nil {
		panic(err)
	}
	fmt.Printf("%s\n", output)
}