add methods in Repository and Model for importing data

kontor-gin/internal/models/artist.go

@@ -29,6 +29,19 @@ type ArtistDTO struct {
 	WebLink   string             `json:"weblink"`
 }
 
+func (dto ArtistDTO) ConvertDTOToModel() Artist {
+	model := Artist{
+		ID:        dto.ID,
+		CreatedAt: dto.CreatedAt.Time,
+		UpdatedAt: dto.UpdatedAt.Time,
+		DeletedAt: dto.DeletedAt,
+		Version:   dto.Version,
+		Name:      dto.Name,
+		WebLink:   dto.WebLink,
+	}
+	return model
+}
+
 func ConvertArtistsToDtos(artists []Artist) []ArtistDTO {
 	dtos := make([]ArtistDTO, len(artists))
 	for i, artist := range artists {
@@ -49,3 +62,5 @@ type CreateArtistDTO struct {
 	Name    string `json:"name"    binding:"required"`
 	WebLink string `json:"weblink" binding:"required"`
 }
+
+type ArtistDTOList []ArtistDTO