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Map转换

gconv.Map支持将任意的mapstruct/*struct类型转换为常用的 map[string]interface{} 类型。当转换参数为struct/*struct类型时,支持自动识别structc/gconv/json 标签,并且可以通过Map方法的第二个参数tags指定自定义的转换标签,以及多个标签解析的优先级。如果转换失败,返回nil

...

更多的map相关转换方法请参考接口文档:https://godoc.org/github.com/gogf/gf/util/gconv

示例1,基本示例

package main

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

func main() {
	type User struct {
		Uid  int    `c:"uid"`
		Name string `c:"name"`
	}
	// 对象
	g.Dump(gconv.Map(User{
		Uid:  1,
		Name: "john",
	}))
	// 对象指针
	g.Dump(gconv.Map(&User{
		Uid:  1,
		Name: "john",
	}))

	// 任意map类型
	g.Dump(gconv.Map(map[int]int{
		100: 10000,
	}))
}

...

{
    "name": "john",
    "uid": 1
}

{
    "name": "john",
    "uid": 1
}

{
    "100": 10000
}

示例2,属性标签

package main

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

func main() {
	type User struct {
		Uid      int
		Name     string `c:"-"`
		NickName string `c:"nickname, omitempty"`
		Pass1    string `c:"password1"`
		Pass2    string `c:"password2"`
	}
	user := User{
		Uid:   100,
		Name:  "john",
		Pass1: "123",
		Pass2: "456",
	}
	g.Dump(gconv.Map(user))
}

...

{
    "Uid": 100,
    "password1": "123",
    "password2": "456"
}

示例3,自定义标签

package main

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

func main() {
	type User struct {
		Id   int    `c:"uid"`
		Name string `my-tag:"nick-name" c:"name"`
	}
	user := &User{
		Id:   1,
		Name: "john",
	}
	g.Dump(gconv.Map(user, "my-tag"))
}

...

{
	"nick-name": "john",
	"uid": 1
}

示例4,递归转换

当参数为map/struct/*struct类型时,如果键值/属性为一个对象(或者对象指针)时,Map方法将会将对象转换为结果的一个键值。我们可以使用MapDeep方法递归转换参数的子对象。

...