Change tag valid func default key

@@ -120,7 +120,7 @@ func getRegFuncs(tag, key string) (vfs []ValidFunc, str string, err error) {
 	if err != nil {
 		return
 	}
-	vfs = []ValidFunc{ValidFunc{"Match", []interface{}{reg, key}}}
+	vfs = []ValidFunc{ValidFunc{"Match", []interface{}{reg, key + ".Match"}}}
 	str = strings.TrimSpace(tag[:index]) + strings.TrimSpace(tag[end+len("/)"):])
 	return
 }
@@ -145,7 +145,7 @@ func parseFunc(vfunc, key string) (v ValidFunc, err error) {
 			err = fmt.Errorf("%s require %d parameters", vfunc, num)
 			return
 		}
-		v = ValidFunc{vfunc, []interface{}{key}}
+		v = ValidFunc{vfunc, []interface{}{key + "." + vfunc}}
 		return
 	}
 
@@ -167,7 +167,7 @@ func parseFunc(vfunc, key string) (v ValidFunc, err error) {
 		return
 	}
 
-	tParams, err := trim(name, key, params)
+	tParams, err := trim(name, key+"."+name, params)
 	if err != nil {
 		return
 	}

@@ -298,6 +298,7 @@ func TestValid(t *testing.T) {
 	}
 
 	uptr := &user{Name: "test", Age: 40}
+	valid.Clear()
 	b, err = valid.Valid(uptr)
 	if err != nil {
 		t.Fatal(err)
@@ -305,8 +306,15 @@ func TestValid(t *testing.T) {
 	if b {
 		t.Error("validation should not be passed")
 	}
+	if len(valid.Errors) != 1 {
+		t.Fatalf("valid errors len should be 1 but got %d", len(valid.Errors))
+	}
+	if valid.Errors[0].Key != "Name.Match" {
+		t.Errorf("Message key should be `Name.Match` but got %s", valid.Errors[0].Key)
+	}
 
 	u = user{Name: "test@/test/;com", Age: 180}
+	valid.Clear()
 	b, err = valid.Valid(u)
 	if err != nil {
 		t.Fatal(err)
@@ -314,4 +322,10 @@ func TestValid(t *testing.T) {
 	if b {
 		t.Error("validation should not be passed")
 	}
+	if len(valid.Errors) != 1 {
+		t.Fatalf("valid errors len should be 1 but got %d", len(valid.Errors))
+	}
+	if valid.Errors[0].Key != "Age.Range" {
+		t.Errorf("Message key should be `Name.Match` but got %s", valid.Errors[0].Key)
+	}
 }