gin render

gin_render.go

package main

import (
	"encoding/json"
	"net/http"

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

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

	r.GET("/", renderJSON)

	r.Run(":8000")
}

func renderJSON(c *gin.Context) {
	ej := newErrJSON(gin.H{"message": "hey", "status": http.StatusOK}, "any error")
	c.Render(http.StatusOK, ej)
}

type errJSON struct {
	Data interface{}
}

func newErrJSON(data interface{}, errStr string) errJSON {
	return errJSON{Data: gin.H{"DATA": data, "ERROR": errStr}}
}

func (e errJSON) Render(w http.ResponseWriter) error {
	header := w.Header()
	if val := header["Content-Type"]; len(val) == 0 {
		header["Content-Type"] = []string{"application/json; charset=utf-8"}
	}

	return json.NewEncoder(w).Encode(e.Data)
}