add scan empty check

dbtool/dbtool.go

@@ -10,16 +10,19 @@ import (
 )
 
 // ScanToStruct - scan query rows to struct
-func ScanToStruct(rows *sql.Rows, ss interface{}) (err error) {
+func ScanToStruct(rows *sql.Rows, ss interface{}) (ok bool, err error) {
 	data, err := ResultToMap(rows)
 	if err != nil {
-		return err
+		return false, err
 	}
 	if len(data) == 0 {
-		return nil
+		return false, nil
 	}
 	err = MapToStruct(data[0], ss)
-	return nil
+	if err != nil {
+		return false, err
+	}
+	return true, nil
 }
 
 func ScanToStructAll(rows *sql.Rows, ss interface{}) error {

main.go

@@ -17,22 +17,19 @@ type FileT struct {
 }
 
 func main() {
-	connStr := "postgres://postgres@localhost:5432/mystorage?sslmode=disable"
+	connStr := "postgres://postgres@localhost:5432/gallery?sslmode=disable"
 	db, err := sql.Open("postgres", connStr)
 	handleError(err)
 	defer db.Close()
 
-	rows, err := db.Query(`select id, name from "storage"."files" where "tmp" = $1 and "trash" = $2 limit 2`, false, false)
+	result, err := db.Query(`insert into "public"."account" ("account", "password", "nick", "email") values ($1, $2, $3, $4) returning *`, "aaaaa", "bbbb", "cccc", "dddd")
 	handleError(err)
-	defer rows.Close()
+	defer result.Close()
 
-	// mm, err := dbtool.ResultToMap(rows)
-	// handleError(err)
+	dd, err := dbtool.ResultToMap(result)
+	handleError(err)
 
-	var files []FileT
-	err = dbtool.ScanToStructAll(rows, &files)
-
-	fmt.Println(files)
+	fmt.Println(dd)
 
 	// var id, name string
 	// for rows.Next() {