feat: crudgen

internal/services/author.go

@@ -0,0 +1,45 @@
+package services
+
+import (
+	"app/internal/dal"
+	"app/internal/models"
+	"errors"
+	"gorm.io/gen/field"
+	"gorm.io/gorm"
+)
+
+type AuthorService struct{}
+type Author = models.Author
+
+func (service *AuthorService) Create(item Author) (Author, error) {
+	err := dal.Author.Preload(field.Associations).Create(&item)
+	return item, err
+}
+func (service *AuthorService) GetAll() ([]*Author, error) {
+	var authors []*Author
+	authors, err := dal.Author.Preload(field.Associations).Find()
+	return authors, err
+}
+func (service *AuthorService) GetById(id uint) (*Author, error) {
+	item, err := dal.Author.Preload(field.Associations).Where(dal.Author.Id.Eq(id)).First()
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		} else {
+			return nil, err
+		}
+	}
+	return item, nil
+}
+func (service *AuthorService) Update(item Author) (Author, error) {
+	err := dal.Author.Preload(field.Associations).Save(&item)
+	return item, err
+}
+func (service *AuthorService) Delete(item Author) (Author, error) {
+	_, err := dal.Author.Unscoped().Preload(field.Associations).Delete(&item)
+	return item, err
+}
+func (service *AuthorService) Count() (int64, error) {
+	amount, err := dal.Author.Count()
+	return amount, err
+}