change map to slice

models/bus.go

@@ -4,7 +4,7 @@ import "slices"
 
 // bus model
 type Bus struct {
-	Name    string `json:"name,omitempty"`
+	Name    string `json:"name"`
 	Address []uint `json:"address,omitempty"` // address of bus
 	Topic   *Topic `json:"topic,omitempty"`   // address of bus
 }