How to marshal relationship structs/slices to json

[fseda]

Relationship struct are not being marshaled to json because of the json:"-" tag. Is there a workaround for this?

// Reading is an object representing the database table.
type Reading struct {
	ID                   uuid.UUID `db:"id,pk" json:"id"`
	SensorID             uuid.UUID `db:"sensor_id" json:"sensor_id"`
	ReadingTime          time.Time `db:"reading_time" json:"reading_time"`
	MeasurementStartTime time.Time `db:"measurement_start_time" json:"measurement_start_time"`
	MeasurementEndTime   time.Time `db:"measurement_end_time" json:"measurement_end_time"`
	CreateTime           time.Time `db:"create_time" json:"create_time"`
	UpdateTime           time.Time `db:"update_time" json:"update_time"`

	R readingR `db:"-" json:"-"` // This tag
}

// readingR is where relationships are stored.
type readingR struct {
	BaseReadings BaseReadingSlice `json:"base_readings"` // base_readings.base_readings_sensor_id_reading_id_fkey
	File   *File      `json:"file"`   // files.files_reading_id_fkey
	Points PointSlice `json:"points"` // points.points_reading_id_fkey
	Sensor *Sensor    `json:"sensor"` // readings.readings_sensor_id_fkey
}

Should I create a custom dto to return the response to the client? What are your suggestions?

[fseda]

So apparently there's a way to configure the json tag for relationships.