added new functions

controllers/author.go

@@ -31,12 +31,9 @@ func CreateAuthor(c *gin.Context) {
 		return
 	}
 
-	Author := models.Author{
-		ID:       input.ID,
-		FullName: input.FullName,
-	}
-	models.DB.Create(&Author)
-	c.JSON(http.StatusOK, gin.H{"data": Author})
+	author := models.NewAuthor(input.ID, input.FullName)
+	models.DB.Create(&author)
+	c.JSON(http.StatusOK, gin.H{"data": author})
 }
 
 func UpdateAuthor(c *gin.Context) {

controllers/format.go

@@ -31,12 +31,9 @@ func CreateFormat(c *gin.Context) {
 		return
 	}
 
-	Format := models.Format{
-		ID:     input.ID,
-		Format: input.Format,
-	}
-	models.DB.Create(&Format)
-	c.JSON(http.StatusOK, gin.H{"data": Format})
+	format := models.NewFormat(input.ID, input.Format)
+	models.DB.Create(&format)
+	c.JSON(http.StatusOK, gin.H{"data": format})
 }
 
 func UpdateFormat(c *gin.Context) {

controllers/order.go

@@ -31,16 +31,9 @@ func CreateOrder(c *gin.Context) {
 		return
 	}
 
-	Order := models.Order{
-		ID:          input.ID,
-		Title:       input.Title,
-		AuthorID:    input.Author,
-		FormatID:    input.Format,
-		ISBN13:      input.ISBN13,
-		ReleaseDate: input.ReleaseDate,
-	}
-	models.DB.Create(&Order)
-	c.JSON(http.StatusOK, gin.H{"data": Order})
+	order := models.NewOrder(input.ID, input.Title, input.Author, input.Format, input.ISBN13, input.ReleaseDate)
+	models.DB.Create(&order)
+	c.JSON(http.StatusOK, gin.H{"data": order})
 }
 
 func UpdateOrder(c *gin.Context) {

models/author.go

@@ -13,3 +13,11 @@ type CreateAuthorInput struct {
 type UpdateAuthorInput struct {
 	FullName string `json:"full_name"`
 }
+
+func NewAuthor(id uint, full_name string) Author {
+	author := Author{
+		ID:       id,
+		FullName: full_name,
+	}
+	return author
+}

models/format.go

@@ -13,3 +13,11 @@ type CreateFormatInput struct {
 type UpdateFormatInput struct {
 	Format string `json:"format"`
 }
+
+func NewFormat(id uint, format_name string) Format {
+	format := Format{
+		ID:     id,
+		Format: format_name,
+	}
+	return format
+}

models/order.go

@@ -25,3 +25,15 @@ type CreateOrderInput struct {
 type UpdateOrderInput struct {
 	Title string `json:"title"`
 }
+
+func NewOrder(id uint, title string, author uint, format uint, isbn_13 uint, release_date time.Time) Order {
+	order := Order{
+		ID:          id,
+		Title:       title,
+		AuthorID:    author,
+		FormatID:    format,
+		ISBN13:      isbn_13,
+		ReleaseDate: release_date,
+	}
+	return order
+}