reflect: call of reflect.Value.FieldByName on slice Value

[mybigman]

{"data":[{"ID":336010449506554447,"Name":"lev","Age":63,"Kids":[{"Name":"boy","Age":5}]}]}

type data struct {
    ID   uint64 `badgerhold:"key"`
    Name string `badgerholdIndex:"IdxName"`
    Age  int
    Kids []kids
}

type kids struct {
    Name string
    Age  int
}

results := []data{}

err := h.db.Find(&results, badgerhold.Where("Kids.Name").Eq("boy"))

Not sure whats going on here?

[timshannon]

You can only access nested structure fields, not slices.

data.Kids is a slice of Kids. Which kid's name do you want to access the first item in the kids slice? The last?

Here's the code that grabs the field value from your struct:

func fieldValue(value reflect.Value, field string) (reflect.Value, error) {
    fields := strings.Split(field, ".")

    current := value
    for i := range fields {
        if current.Kind() == reflect.Ptr {
            current = current.Elem().FieldByName(fields[i])
        } else {
            current = current.FieldByName(fields[i])
        }
        if !current.IsValid() {
            return reflect.Value{}, fmt.Errorf("The field %s does not exist in the type %s", field, value)
        }
    }
    return current, nil
}