Quick cleanup on a few bits of code, also added some places where a transaction rollback was missed.

category.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"context"
-	"fmt"
 )
 
 type Category struct {
@@ -68,6 +67,7 @@ func insertNewCategory(name string, subcategories []Subcategory) (recordID int64
 		statement, err := transaction.Prepare("INSERT INTO category (category_name) VALUES ($1) RETURNING category_id;")
 
 		if err != nil {
+			transaction.Rollback()
 			println(err.Error())
 			return 0, false
 		}
@@ -93,6 +93,7 @@ func insertNewCategory(name string, subcategories []Subcategory) (recordID int64
 		statement, err := transaction.Prepare("INSERT INTO subcategory(subcategory_name, category_id) VALUES($1, $2);")
 
 		if err != nil {
+			transaction.Rollback()
 			println(err.Error())
 			return 0, false
 		}
@@ -100,7 +101,7 @@ func insertNewCategory(name string, subcategories []Subcategory) (recordID int64
 		defer statement.Close()
 
 		for _, subcategory := range subcategories {
-			println(fmt.Sprintf("For cat %d, add sub '%s'.", recordID, subcategory.Name))
+
 			_, err := statement.Exec(subcategory.Name, recordID)
 
 			if err != nil {