feat: initial commit without update

bookstore_exercise.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"bookstore/controllers"
+	"bookstore/models"
+	"github.com/gin-gonic/gin"
+)
+
+func main() {
+	router := gin.Default()
+	models.ConnectDatabase()
+
+	router.GET("/books", controllers.AllBooks)
+	router.POST("/books", controllers.CreateBook)
+	router.GET("/books/:id", controllers.FindBook)
+	router.PUT("/books/:id", controllers.UpdateBook)
+
+	router.Run(":8080")
+}

controllers/books.go

@@ -0,0 +1,57 @@
+package controllers
+
+import (
+	"bookstore/models"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+func AllBooks(c *gin.Context) {
+	var books []models.Book
+	models.DB.Find(&books)
+	c.JSON(http.StatusOK, gin.H{"data": books})
+}
+
+func CreateBook(c *gin.Context) {
+	var inputBook models.CreateBookInput
+	if err := c.ShouldBindJSON(&inputBook); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	book := models.Book{
+		Title:  inputBook.Title,
+		Author: inputBook.Author,
+	}
+	models.DB.Create(&book)
+
+	c.JSON(http.StatusOK, gin.H{"data": book})
+}
+
+func FindBook(c *gin.Context) {
+	var book models.Book
+
+	if error := models.DB.Where("id = ? ", c.Param("id")).First(&book).Error; error != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Record Not Found"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"data": book})
+}
+
+func UpdateBook(c *gin.Context) {
+	var book models.Book
+	if error := models.DB.Where("id = ? ", c.Param("id")).First(&book).Error; error != nil {
+		c.JSON(http.StatusBadRequest, "Record Not Found")
+		return
+	}
+
+	var input models.UpdateBookInput
+	if err := c.ShouldBindJSON(&input); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+	}
+
+	if err := models.DB.Model(&book).Updates(input); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err})
+	}
+	c.JSON(http.StatusOK, gin.H{"data": book})
+}

models/book.go

@@ -0,0 +1,27 @@
+package models
+
+import (
+	"github.com/satori/go.uuid"
+	"gorm.io/gorm"
+)
+
+type Book struct {
+	ID     uuid.UUID `json:"id" gorm:"type:uuid;primary_key;default:uuid_generate_v4()"`
+	Title  string    `json:"title"`
+	Author string    `json:"author"`
+}
+
+type CreateBookInput struct {
+	Title  string `json:"title" binding:"required"`
+	Author string `json:"author" binding:"required"	`
+}
+
+type UpdateBookInput struct {
+	Title  string `json:"title"`
+	Author string `json:"author"`
+}
+
+func (book *Book) BeforeCreate(scope *gorm.DB) error {
+	scope.Statement.SetColumn("id", uuid.NewV4().String())
+	return nil
+}

models/setup.go

@@ -0,0 +1,24 @@
+package models
+
+import (
+	_ "github.com/jinzhu/gorm/dialects/postgres"
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+)
+
+var DB *gorm.DB
+
+func ConnectDatabase() {
+	var err error
+
+	Dsn := "host=localhost port=5432 user=postgres dbname=bookstore_go password=123 sslmode=disable"
+	database, err := gorm.Open(postgres.Open(Dsn), &gorm.Config{})
+	if err != nil {
+		panic(err)
+
+	}
+	database.AutoMigrate(&Book{})
+
+	DB = database
+
+}