I am using grpc+golang+mongodb, and I have the following proto file.
enum InventoryType {
LARGE = 0;
SMALL = 1;
}
my go code:
import (
"context"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"inventory-service/pb"
)
func (i *Inventory) CreateInventory(ctx context.Context, req *pb.CreateInventoryRequest) (*pb.CreateInventoryResponse, error) {
inventory := req.GetInventory()
data := pb.Inventory{
Inventory: inventory.GetInventory(),
}
mctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
client, _ := mongo.Connect(ctx, options.Client().ApplyURI("mongodb://localhost:27017"))
collection := client.Database("test_db").Collection("test_collection")
collection.InsertOne(mctx, data)
return &pb.CreateInventoryResponse{}, nil
}
and when I save the enum to mongodb using golang, it saves the int value 0, 1 instead of 'LARGE', 'SMALL', any ideas on how I can save string instead?
Protobuf is for communication, not for database modeling. You shouldn't use protobuf generated files to save in your database.
Instead create a separate type that models the document you want to store in the database, in which you may store the string representation of your enum, and that will get stored in the database.
For example:
type MyData {
Inventory string `bson:"inventory"`
}
And using it:
data := MyData{
Inventory: inventory.GetInventory().String(),
}