Are embedded structs supported?

[milkpirate]

I have structs similar to:

type Foo struct {
	Bar string `fig:"bar"`
}

type Config struct {
	*Foo
	Baz string `fig:"baz"`
}

And a config file like so:

# config.yaml
bar: barBar
baz: bazBaz

fig loads the config as follows:

(main.Config) {
 Foo: (*main.Foo)(<nil>),
 Baz: (string) (len=6) "bazBaz"
}

but I would hope to get:

(main.Config) {
 Foo: (*main.Foo)(0xc0000289a0)({
  Bar: (string) (len=6) "barBar"
 }),
 Baz: (string) (len=6) "bazBaz"
}

Is there a workaround or a setting I need to tweak?

[coxley]

I was looking for the same!

[coxley]

@milkpirate So because fig uses mitchellh/mapstructure under the hood, you can include ,squash in your configured tag for the field.

type Base struct {
  Env string `fig:"env"`
}

type Config struct {
  // If you override [fig.Tag], then use that instead.
  Base `fig:",squash"`
}

Refs:

• fig/fig.go

  Line 193 in 0afa4d5

  dec, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{

• https://pkg.go.dev/github.com/mitchellh/mapstructure#hdr-Embedded_Structs_and_Squashing