MagicArray use to data translate easily

In more cases, we need created more and more DTOs structs to deal with complex business,At time went by, the code will be maintained more and more differently.

If you are wroted with php language, You will maybe to thinking about, php array is flexible desgin.

But in go, you can use the MagicArray, you needn’t care type, you needn’t care about make more DTOs.

go get github.com/lingdor/magicarray@v0.0.6

CASE1 merge dto and output

package main

import (
 "encoding/json"
 "fmt"
 "github.com/lingdor/magicarray/array"
 "time"
)

type UserDTO struct {
 Id   int `json:"userid"`
 Name string
}

type ScoreDTO struct {
 Score     int
 ScoreTime time.Time
}

type AreaDto struct {
 CityId int
 City   string
}

func dtosCommand() {

 user := UserDTO{
  Id:   1,
  Name: "bobby",
 }
 score := ScoreDTO{
  Score:     66,
  ScoreTime: time.Now(),
 }
 area := AreaDto{
  CityId: 10000,
  City:   "beij",
 }

 mix, _ := array.Merge(array.ValueofStruct(user), score, area)
 mix = array.Pick(mix, "Id", "City", "Score")
 if bs, err := json.Marshal(mix); err == nil {
  fmt.Println(string(bs))
 } else {
  panic(err)
 }

}

output

{"userid":1,"City":"newyork","Score":66}

CASE2 Column translate

package main

import (
 "encoding/json"
 "fmt"
 "github.com/lingdor/magicarray/array"
)

type ColumnUserEntity struct {
 Id       int `json:"uid"`
 UserName string
 IsMale   bool
}

func columnCommand() {

 users := []ColumnUserEntity{
  {
   Id:       1,
   UserName: "Bobby",
   IsMale:   true,
  },
  {
   Id:       2,
   UserName: "Lily",
   IsMale:   false,
  },
 }

 usersArr := array.ValueOfSlice(users)
 usersArr = array.WashColumn(usersArr, array.WashTagRuleJsonInitialLower())
 if bs, err := json.Marshal(usersArr); err == nil {
  fmt.Println(string(bs))
 } else {
  panic(err)
 }

 usersArr = array.Column(usersArr, "UserName")
 if bs, err := json.Marshal(usersArr); err == nil {
  fmt.Println(string(bs))
 } else {
  panic(err)
 }

}

output

[{"uid":1,"userName":"Bobby","isMale":true},{"uid":2,"userName":"Lily","isMale":false}]
["Bobby","Lily"]Case3 Tag the fields

package main

import (
 "encoding/json"
 "fmt"
 "github.com/lingdor/magicarray/array"
)

type UserEntity struct {
 Id       int `json:"uid"`
 UserName string
 IsMale   bool
}

func tagCommand() {

 users := UserEntity{
  Id:       1,
  UserName: "Bobby",
  IsMale:   true,
 }

 userArr := array.ValueofStruct(users)
 userArr = array.SetTag(userArr, "Id", "json", "UserId")
 if bs, err := json.Marshal(userArr); err == nil {
  fmt.Println(string(bs))
 } else {
  panic(err)
 }

}

output:

{"UserId":1,"UserName":"Bobby","IsMale":true}