| 8 | ) |
| 9 | |
| 10 | func ApplyDefaultValues(struct_ interface{}) (err error) { |
| 11 | o := structs.New(struct_) |
| 12 | |
| 13 | for _, field := range o.Fields() { |
| 14 | defaultValue := field.Tag("default") |
| 15 | if defaultValue == "" { |
| 16 | continue |
| 17 | } |
| 18 | var val interface{} |
| 19 | switch field.Kind() { |
| 20 | case reflect.String: |
| 21 | val = defaultValue |
| 22 | case reflect.Bool: |
| 23 | if defaultValue == "true" { |
| 24 | val = true |
| 25 | } else if defaultValue == "false" { |
| 26 | val = false |
| 27 | } else { |
| 28 | return fmt.Errorf("invalid bool expression: %v, use true/false", defaultValue) |
| 29 | } |
| 30 | case reflect.Int: |
| 31 | val, err = strconv.Atoi(defaultValue) |
| 32 | if err != nil { |
| 33 | return err |
| 34 | } |
| 35 | default: |
| 36 | val = field.Value() |
| 37 | } |
| 38 | field.Set(val) |
| 39 | } |
| 40 | return nil |
| 41 | } |