From 0c460d4421ee1350563647c80f360f6d9e373adb Mon Sep 17 00:00:00 2001
From: Inhere <in.798@qq.com>
Date: Mon, 5 Jun 2023 13:32:43 +0800
Subject: [PATCH] :necktie: update: struts - InitDefaults() support init
 non-zero ptr sub-struct field

---
 structs/init.go      |  9 +++++++++
 structs/init_test.go | 12 ++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/structs/init.go b/structs/init.go
index 31e124d29..422929cfc 100644
--- a/structs/init.go
+++ b/structs/init.go
@@ -93,6 +93,15 @@ func initDefaults(rv reflect.Value, opt *InitOptions) error {
 
 		// skip on field has value
 		if !fv.IsZero() {
+			// special: handle for pointer struct field
+			if fv.Kind() == reflect.Pointer {
+				fv = fv.Elem()
+				if fv.Kind() == reflect.Struct {
+					if err := initDefaults(fv, opt); err != nil {
+						return err
+					}
+				}
+			}
 			continue
 		}
 
diff --git a/structs/init_test.go b/structs/init_test.go
index 29608d616..8f0904eac 100644
--- a/structs/init_test.go
+++ b/structs/init_test.go
@@ -120,9 +120,10 @@ func TestInitDefaults_nestStruct(t *testing.T) {
 
 	u = &User{Extra: ExtraDefault{Github: "some url"}}
 	err = structs.InitDefaults(u)
-	dump.P(u)
+	// dump.P(u)
 	assert.NoErr(t, err)
 	assert.Eq(t, "chengdu", u.Extra.City)
+	assert.Eq(t, "some url", u.Extra.Github)
 }
 
 func TestInitDefaults_ptrStructField(t *testing.T) {
@@ -141,6 +142,13 @@ func TestInitDefaults_ptrStructField(t *testing.T) {
 	assert.Eq(t, 30, u.Age)
 	assert.Eq(t, "chengdu", u.Extra.City)
 	assert.Eq(t, "https://github.com/inhere", u.Extra.Github)
+
+	u = &User{Extra: &ExtraDefault{Github: "some url"}}
+	err = structs.InitDefaults(u)
+	// dump.P(u)
+	assert.NoErr(t, err)
+	assert.Eq(t, "chengdu", u.Extra.City)
+	assert.Eq(t, "some url", u.Extra.Github)
 }
 
 func TestInitDefaults_sliceField(t *testing.T) {
@@ -161,7 +169,7 @@ func TestInitDefaults_sliceField(t *testing.T) {
 	assert.Eq(t, []int64{34, 456}, u.TagIds)
 }
 
-func TestInitDefaults_InitStructSlice(t *testing.T) {
+func TestInitDefaults_initStructSlice(t *testing.T) {
 	// test for slice struct field
 	type User struct {
 		Name  string `default:"inhere"`