Struktur Project

Author: zumardirahman

book/input.go

@@ -0,0 +1,9 @@
+package book
+
+import "encoding/json"
+
+type BookInput struct {
+	Title    string      `json:"title" binding:"required"`
+	Price    json.Number `json:"price" binding:"required,number"`
+	SubTitle string      `json:"sub_title" binding:"required"`
+}

handler/book.go

@@ -0,0 +1,70 @@
+package handler
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-playground/validator/v10"
+
+	"pustaka-api/book"
+)
+
+func RootHandler(c *gin.Context) { //public diawali huruf capital agar bisa dipanggil luar paket handler
+	c.JSON(http.StatusOK, gin.H{
+		"nama": "Zumardi Rahman",
+		"bio":  "A Software Engineer",
+	})
+}
+
+func HelloHandler(c *gin.Context) {
+	c.JSON(http.StatusOK, gin.H{
+		"title":    "Hello World",
+		"subtitle": "My Golang Basic",
+	})
+}
+
+func BooksHandler(c *gin.Context) {
+	id := c.Param("id") //parameter
+	title := c.Param("title")
+	c.JSON(http.StatusOK, gin.H{
+		"id":    id,
+		"title": title,
+	})
+}
+
+func QueryHandler(c *gin.Context) {
+	title := c.Query("title") //query string
+	price := c.Query("price")
+	c.JSON(http.StatusOK, gin.H{
+		"title": title,
+		"price": price,
+	})
+}
+
+func PostBooksHandler(c *gin.Context) {
+	var bookInput book.BookInput
+
+	err := c.ShouldBindJSON(&bookInput)
+	if err != nil {
+		//log.Fatal(err) //serber mati
+
+		errorMessages := []string{}
+		for _, e := range err.(validator.ValidationErrors) { //menampilkan erorr validation
+			errorMessage := fmt.Sprintf("Error on field %s, condition: %s", e.Field(), e.ActualTag())
+			errorMessages = append(errorMessages, errorMessage)
+
+			c.JSON(http.StatusBadRequest, gin.H{
+				"errors": errorMessages,
+			})
+			return
+		}
+
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"title":     bookInput.Title,
+		"price":     bookInput.Price,
+		"sub_title": bookInput.SubTitle,
+	})
+}

main.go

@@ -1,95 +1,29 @@
 package main
 
 import (
-	"encoding/json"
-	"fmt"
 	"net/http"
 
+	"pustaka-api/handler"
+
 	"github.com/gin-gonic/gin"
-	"github.com/go-playground/validator/v10"
 )
 
 func main() {
 	router := gin.Default()
 
 	v1 := router.Group("/v1")
-	v1.GET("/", rootHandler)
-	v1.GET("/hello", helloHandler)
-	v1.GET("/books/:id/:title", booksHandler) // :id akan dapat berubah
-	v1.GET("/query", queryHandler)            // ex ?id=232
-	v1.POST("/books", postBooksHandler)
+	v1.GET("/", handler.RootHandler)
+	v1.GET("/hello", handler.HelloHandler)
+	v1.GET("/books/:id/:title", handler.BooksHandler) // :id akan dapat berubah
+	v1.GET("/query", handler.QueryHandler)            // ex ?id=232
+	v1.POST("/books", handler.PostBooksHandler)
 
 	v2 := router.Group("/v2")
 	v2.GET("/", v2RootHandler)
 
 	router.Run(":8888")
 }
 
-func rootHandler(c *gin.Context) {
-	c.JSON(http.StatusOK, gin.H{
-		"nama": "Zumardi Rahman",
-		"bio":  "A Software Engineer",
-	})
-}
-
-func helloHandler(c *gin.Context) {
-	c.JSON(http.StatusOK, gin.H{
-		"title":    "Hello World",
-		"subtitle": "My Golang Basic",
-	})
-}
-
-func booksHandler(c *gin.Context) {
-	id := c.Param("id") //parameter
-	title := c.Param("title")
-	c.JSON(http.StatusOK, gin.H{
-		"id":    id,
-		"title": title,
-	})
-}
-
-func queryHandler(c *gin.Context) {
-	title := c.Query("title") //query string
-	price := c.Query("price")
-	c.JSON(http.StatusOK, gin.H{
-		"title": title,
-		"price": price,
-	})
-}
-
-type BookInput struct {
-	Title    string      `json:"title" binding:"required"`
-	Price    json.Number `json:"price" binding:"required,number"`
-	SubTitle string      `json:"sub_title" binding:"required"`
-}
-
-func postBooksHandler(c *gin.Context) {
-	var bookInput BookInput
-
-	err := c.ShouldBindJSON(&bookInput)
-	if err != nil {
-		//log.Fatal(err) //serber mati
-
-		errorMessages := []string{}
-		for _, e := range err.(validator.ValidationErrors) { //menampilkan erorr validation
-			errorMessage := fmt.Sprintf("Error on field %s, condition: %s", e.Field(), e.ActualTag())
-			errorMessages = append(errorMessages, errorMessage)
-
-			c.JSON(http.StatusBadRequest, gin.H{
-				"errors": errorMessages,
-			})
-			return
-		}
-
-	}
-
-	c.JSON(http.StatusOK, gin.H{
-		"title":     bookInput.Title,
-		"price":     bookInput.Price,
-		"sub_title": bookInput.SubTitle,
-	})
-}
-
 func v2RootHandler(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{
 		"nama": "Zumardi Rahman ver 2",