Save method

app/repository/method_delete.go

@@ -0,0 +1,31 @@
+package repository
+
+import (
+	"repo-pattern/app/repository/smartfilter"
+
+	"gorm.io/gorm/schema"
+)
+
+type DeleteMethod[T schema.Tabler] struct {
+	repo *RepoBase[T]
+}
+
+func (m *DeleteMethod[T]) Init(repo *RepoBase[T]) {
+	m.repo = repo
+}
+
+func (m DeleteMethod[T]) Delete(filter interface{}) (int64, error) {
+	var (
+		model T
+	)
+
+	query, err := smartfilter.ToQuery(model, filter, m.repo.dbConn)
+	if err != nil {
+		return 0, err
+	}
+	result := query.Delete(&model)
+	if result.Error != nil {
+		return 0, result.Error
+	}
+	return result.RowsAffected, nil
+}

app/repository/repository.go

@@ -5,6 +5,8 @@ import (
 	"gorm.io/gorm/schema"
 )
 
+const DEFAULT_ID_FIELD = "id"
+
 type MethodInitInterface[T schema.Tabler] interface {
 	Init(repo *RepoBase[T])
 }
@@ -22,6 +24,7 @@ type RepoBase[T schema.Tabler] struct {
 	ExistsMethod[T]
 	CountMethod[T]
 	SaveMethod[T]
+	DeleteMethod[T]
 }
 
 func (repo *RepoBase[T]) InitMethods(methods []MethodInitInterface[T]) {
@@ -35,7 +38,7 @@ func (m *RepoBase[T]) Init(dbConn *gorm.DB, options *RepoOptions) {
 
 	if options == nil {
 		// no options provided? set defaults
-		m.IdField = "id"
+		m.IdField = DEFAULT_ID_FIELD
 	} else {
 		if len(options.IdField) > 0 {
 			m.IdField = options.IdField
@@ -48,6 +51,7 @@ func (m *RepoBase[T]) Init(dbConn *gorm.DB, options *RepoOptions) {
 		&m.ExistsMethod,
 		&m.CountMethod,
 		&m.SaveMethod,
+		&m.DeleteMethod,
 	}
 	m.InitMethods(methods)
 }