add methods in Repository an dModel for importing data

kontor-gin/internal/models/author.go

@@ -31,6 +31,19 @@ type AuthorDTO struct {
 	LastName  string             `json:"last_name"`
 }
 
+func (dto AuthorDTO) ConvertDTOToModel() Author {
+	model := Author{
+		ID:        dto.ID,
+		CreatedAt: dto.CreatedAt.Time,
+		UpdatedAt: dto.UpdatedAt.Time,
+		DeletedAt: dto.DeletedAt,
+		Version:   dto.Version,
+		FirstName: dto.FirstName,
+		LastName:  dto.LastName,
+	}
+	return model
+}
+
 func ConvertAuthorsToDtos(authors []Author) []AuthorDTO {
 	dtos := make([]AuthorDTO, len(authors))
 	for i, author := range authors {