修复不能删除注销用户的问题

model/user.go

@@ -37,7 +37,15 @@ type User struct {
 // CheckUserExistOrDeleted check if user exist or deleted, if not exist, return false, nil, if deleted or exist, return true, nil
 func CheckUserExistOrDeleted(username string, email string) (bool, error) {
 	var user User
-	err := DB.Unscoped().First(&user, "username = ? or email = ?", username, email).Error
+
+	// err := DB.Unscoped().First(&user, "username = ? or email = ?", username, email).Error
+	// check email if empty
+	var err error
+	if email == "" {
+		err = DB.Unscoped().First(&user, "username = ?", username).Error
+	} else {
+		err = DB.Unscoped().First(&user, "username = ? or email = ?", username, email).Error
+	}
 	if err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			// not exist, return false, nil
@@ -208,6 +216,14 @@ func (user *User) Delete() error {
 	return err
 }
 
+func (user *User) HardDelete() error {
+	if user.Id == 0 {
+		return errors.New("id 为空！")
+	}
+	err := DB.Unscoped().Delete(user).Error
+	return err
+}
+
 // ValidateAndFill check password & user status
 func (user *User) ValidateAndFill() (err error) {
 	// When querying with struct, GORM will only query with non-zero fields,