fixing validation

controllers/networkHttpController.go

@@ -137,6 +137,14 @@ func RemoveComms(networks []models.Network) []models.Network {
 func ValidateNetworkUpdate(network models.NetworkUpdate) error {
 	v := validator.New()
 
+        _ = v.RegisterValidation("netid_valid", func(fl validator.FieldLevel) bool {
+                if fl.Field().String() == "" {
+			return true
+		}
+                inCharSet := functions.NameInNetworkCharSet(fl.Field().String())
+                return inCharSet
+        })
+
 	//	_ = v.RegisterValidation("addressrange_valid", func(fl validator.FieldLevel) bool {
 	//		isvalid := fl.Field().String() == "" || functions.IsIpCIDR(fl.Field().String())
 	//		return isvalid

models/network.go

@@ -47,8 +47,8 @@ type NetworkUpdate struct {
 	//	AddressRange6          string             `json:"addressrange6" bson:"addressrange6" validate:"required_with=isdualstack true,cidrv6"`
 	AddressRange6 string `json:"addressrange6" bson:"addressrange6" validate:"omitempty,cidr"`
 	//can't have min=1 with omitempty
-	DisplayName         string      `json:"displayname,omitempty" bson:"displayname,omitempty" validate:"omitempty,validnetid,min=1,max=20"`
-	NetID               string      `json:"netid" bson:"netid" validate:"omitempty,validnetid,min=1,max=15"`
+	DisplayName         string      `json:"displayname,omitempty" bson:"displayname,omitempty" validate:"omitempty,netid_valid,min=1,max=20"`
+	NetID               string      `json:"netid" bson:"netid" validate:"omitempty,netid_valid,min=1,max=15"`
 	NodesLastModified   int64       `json:"nodeslastmodified" bson:"nodeslastmodified"`
 	NetworkLastModified int64       `json:"networklastmodified" bson:"networklastmodified"`
 	DefaultInterface    string      `json:"defaultinterface" bson:"defaultinterface"`