JSON Unmarshal into struct Example

main.go

// JSON Unmarshal into struct Example
package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"net/http"

	"github.com/gin-gonic/gin"
)

const trendingURL = "https://lapi.kumparan.com/v3.0/trending/topics"

type TrendingData struct {
	Code    int
	Page    int
	Limit   int
	Total   int
	Results []struct {
		_Key   string
		Author struct {
			Id       string
			Name     string
			Username string
		}
		Date struct {
			Create string
		}
		Description string
		Flag        struct{}
		Name        string
		Slug        string
		Status      string
		Type        string
		Url         string
		User        struct{}
		Statistic   struct {
			Followers int
		}
		Position bool
		_Id      string
		_Rev     string
	}
}

func main() {
	route := gin.Default()

	route.GET("/", func(c *gin.Context) {
		page := c.Query("page")
		limit := c.Query("limit")

		res, _ := http.Get(trendingURL + "?limit=" + limit + "&page=" + page)
		body, _ := ioutil.ReadAll(res.Body)

		var trendingData TrendingData
		err := json.Unmarshal(body, &trendingData)
		if err != nil {
			fmt.Println("There was an error bro! : ", err)
			panic(err)
		}

		if trendingData.Code == 200 {
			for i := 0; i < trendingData.Limit; i++ {
				var desc = trendingData.Results[i].Description
				var urlDetail = "https://kumparan.com/topic/" + trendingData.Results[i].Slug
				var content = fmt.Sprintf("%s %s", desc, urlDetail)
				fmt.Println(content)
			}
		} else {
			fmt.Println("There was an error status code : ", trendingData.Code)
		}

		if trendingData.Code == 200 {
			c.JSON(http.StatusBadGateway, gin.H{
				"data": trendingData.Results,
			})
		} else {
			c.JSON(http.StatusBadGateway, gin.H{
				"results": "Website Down!",
			})
		}
	})
	route.Run(":8000")
}

output:

[GIN-debug] GET /
[GIN-debug] Listening and serving HTTP on :8000
Gempa di Donggala https://kumparan.com/topic/gempa-di-donggala
Pegawai Bank Dibunuh https://kumparan.com/topic/pegawai-bank-dibunuh
Berita Artis https://kumparan.com/topic/berita-artis
Kapitra Ampera https://kumparan.com/topic/kapitra-ampera
Konten Spesial https://kumparan.com/topic/konten-spesial
Roro Fitria Narkoba https://kumparan.com/topic/roro-fitria-narkoba
Penyanyi dangdut jebolan DA https://kumparan.com/topic/evie-masamba
Rumah DP Rp 0 https://kumparan.com/topic/rumah-dp-rp-0
Ruben Onsu https://kumparan.com/topic/ruben-onsu
Ketua Umum Gerindra https://kumparan.com/topic/prabowo-subianto
[GIN] 2018/10/12 - 05:29:02 | 502 | 873.545861ms | ::1 | GET /?limit=10&page=1