使用Golang和Gorm获取完整对象，包括子对象

我正在使用Gorm和Golang从我的数据库中获取数据。是否可以使Gorm同时获取对象子对象（外键）

数据库表

users
+----+---------+------------+
| id | name    | country_id |
+----+---------+------------+
|  1 | Adam    |          1 |
|  2 | Bertil  |          1 |
|  3 | Charlie |          2 |
+----+---------+------------+

countries
+----+--------+
| id | name   |
+----+--------+
|  1 | Sweden |
|  2 | Norway |
+----+--------+

type User struct {
    Id        int64   `json:"-"`
    Name      string  `json:"name"`
    CountryId int64   `json:"-"`
    Country   Country `json:"country"`
}

type Country struct {
    Id   int64  `json:"-"`
    Name string `json:"name"`
}

var users []User
DB.Find(&users) // Question: How should this be modified to automatically fetch the Country?

型号

users
+----+---------+------------+
| id | name    | country_id |
+----+---------+------------+
|  1 | Adam    |          1 |
|  2 | Bertil  |          1 |
|  3 | Charlie |          2 |
+----+---------+------------+

countries
+----+--------+
| id | name   |
+----+--------+
|  1 | Sweden |
|  2 | Norway |
+----+--------+

type User struct {
    Id        int64   `json:"-"`
    Name      string  `json:"name"`
    CountryId int64   `json:"-"`
    Country   Country `json:"country"`
}

type Country struct {
    Id   int64  `json:"-"`
    Name string `json:"name"`
}

var users []User
DB.Find(&users) // Question: How should this be modified to automatically fetch the Country?

获取所有用户的代码

users
+----+---------+------------+
| id | name    | country_id |
+----+---------+------------+
|  1 | Adam    |          1 |
|  2 | Bertil  |          1 |
|  3 | Charlie |          2 |
+----+---------+------------+

countries
+----+--------+
| id | name   |
+----+--------+
|  1 | Sweden |
|  2 | Norway |
+----+--------+

type User struct {
    Id        int64   `json:"-"`
    Name      string  `json:"name"`
    CountryId int64   `json:"-"`
    Country   Country `json:"country"`
}

type Country struct {
    Id   int64  `json:"-"`
    Name string `json:"name"`
}

var users []User
DB.Find(&users) // Question: How should this be modified to automatically fetch the Country?

实际结果

[
    {
        "name": "Adam",
        "country" : {
            "name": "",
        }
    },
    ...
]

[
    {
        "name": "Adam",
        "country" : {
            "name": "Sweden",
        }
    },
    ...
]

期望的结果

[
    {
        "name": "Adam",
        "country" : {
            "name": "",
        }
    },
    ...
]

[
    {
        "name": "Adam",
        "country" : {
            "name": "Sweden",
        }
    },
    ...
]

非常感谢您的输入

---

/Klarre

是的，这是可能的，它被称为

users:=make（[]用户，0）
DB.Preload（“国家”）.Find（和用户）

谢谢！正是我想要的。：）