Impl. GetCategoryByID().

pkg/mindflow/database/sqlite/db.go

@@ -205,6 +205,23 @@ func (s *SQLiteMindflow) NewCategory(name string) (int64, error) {
 	return id, nil
 }
 
-func (s *SQLiteMindflow) GetCategoryByID(id int64) (string, error) {
-	return "", nil
+func (s *SQLiteMindflow) GetCategoryByID(id int64) (name string, err error) {
+	tx, err := s.db.Begin()
+	if err != nil {
+		return "", err
+	}
+	defer tx.Rollback()
+
+	r := tx.Stmt(stmtCategoryById).QueryRow(id)
+	if r.Err() != nil {
+		return "", r.Err()
+	}
+
+	if err := r.Scan(name); err != nil {
+		return "", err
+	}
+
+	tx.Commit()
+
+	return
 }