mongo-go - w3toppers.com

How to filter fields from a mongo document with the official mongo-go-driver

Edit: As the mongo-go driver evolved, it is possible to specify a projection using a simple bson.M like this: options.FindOne().SetProjection(bson.M{“_id”: 0}) Original (old) answer follows. The reason why it doesn’t work for you is because the field fields._id is unexported, and as such, no other package can access it (only the declaring package). You must … Read more

How to ignore nulls while unmarshalling a MongoDB document?

The problem is that the current bson codecs do not support encoding / decoding string into / from null. One way to handle this is to create a custom decoder for string type in which we handle null values: we just use the empty string (and more importantly don’t report error). Custom decoders are described … Read more