How to use gconv.Struct in a nested structure to obtain the original failed error after the conversion fails?

[shuqingzai]

What do you want to ask

package tests

import (
	"fmt"
	"strconv"
	"testing"

	"github.com/gogf/gf/v2/frame/g"
	"github.com/gogf/gf/v2/util/gconv"
)

type Level int

const (
	LevelNormal Level = 0
	LevelGood   Level = 1
	LevelGreat  Level = 2
)

// MarshalText 实现接口: [encoding.TextMarshaler]
func (e Level) MarshalText() ([]byte, error) {
	return strconv.AppendInt([]byte{}, int64(e), 10), nil
}

// UnmarshalText 实现接口: [encoding.TextUnmarshaler]
func (e *Level) UnmarshalText(text []byte) error {
	i, err := strconv.ParseInt(string(text), 10, 32)
	if err != nil {
		return fmt.Errorf("invalid main.Level value: %s, error: %w", text, err)
	}
	*e = Level(i)
	return nil
}

type User struct {
	Name  string `json:"name" dc:"用户名称" v:"required|length:6,30" `
	Level Level  `json:"level" v:"required" dc:"等级"`
}

type Hello struct {
	Name string `json:"name" v:"required" dc:"名称"`
	User *User  `json:"user" v:"required" dc:"用户"`
}

func Test_Once(t *testing.T) {
	params := map[string]any{
		"name":  "u",
		"level": "l",
	}

	var data *User
	if err := gconv.Struct(params, &data); err != nil {
		t.Errorf("gconv.Struct failed: %+v", err)
	}
	g.Dump(data)

}

func Test_Nested(t *testing.T) {
	params := map[string]any{
		"name": "test",
		"user": map[string]any{
			"name":  "u",
			"level": "l",
		},
	}

	var data *Hello
	if err := gconv.Struct(params, &data); err != nil {
		t.Errorf("gconv.Struct failed: %+v", err)
	}
	g.Dump(data)
}

运行上诉的测试，Test_Once 可以拿到我自己设置的错误 invalid main.Level value~~~~ ，但是 Test_Nested 无法获取，只能获取 panic 的错误 gconv.Struct failed: reflect.Value.Convert: value of type map[string]interface {} cannot be converted to type tests.User 因为转换错误时，强制设置反射内容到 Hello.User 中导致 panic

• gf/util/gconv/gconv_struct.go

  Line 599 in 509fdf4

  structFieldValue.Set(reflect.ValueOf(value).Convert(structFieldValue.Type()))