add option: host

tags.go

@@ -11,6 +11,7 @@ var supportTag = map[string]int{
 	"-":           1,
 	"initial":     1,
 	"url":         2,
+	"host":        2,
 	"assign_to":   2,
 	"assign_type": 2,
 }

tags_test.go

@@ -7,11 +7,12 @@ import (
 )
 
 type Model struct {
-	Id    int
-	Name  string `ts:"-"`
-	Sex   int8   `ts:"assign_to(IsMan);assign_type(bool)"`
-	IsMan bool
-	Image string `ts:"url(http)"`
+	Id     int
+	Name   string `ts:"-"`
+	Sex    int8   `ts:"assign_to(IsMan);assign_type(bool)"`
+	IsMan  bool
+	Image  string `ts:"url(http)"`
+	Avatar string `ts:"host(cdn)"`
 
 	Json   string `ts:"assign_to(Object);assign_type(unmarshal)"`
 	Object interface{}

tagsugar.go

@@ -9,9 +9,14 @@ import (
 )
 
 var (
-	Http = ""
+	Http    = ""
+	hostMap = make(map[string]string, 0)
 )
 
+func AddHost(key string, host string) {
+	hostMap[key] = host
+}
+
 func Lick(data interface{}) {
 	v := reflect.ValueOf(data)
 	k := v.Kind()
@@ -120,6 +125,17 @@ func changeField(v reflect.Value, field reflect.Value, options tagOptions) error
 		}
 	}
 
+	host := options["host"]
+	if host != "" {
+		if field.CanSet() {
+			s := field.String()
+			value := hostMap[host]
+			if value != "" {
+				field.Set(reflect.ValueOf(value + s))
+			}
+		}
+	}
+
 	cName := options["assign_to"]
 	if cName != "" {
 		cFiled := v.FieldByName(cName)

tagsugar_test.go

@@ -40,3 +40,11 @@ func TestArrayJsonUnmarshal(t *testing.T) {
 	Lick(&model)
 	log.Print(model.Array)
 }
+
+func TestHost(t *testing.T) {
+	AddHost("cdn", "https://cdn.example.com/")
+	model := Model{Id: 5, Avatar: "5.png"}
+	log.Print(model.Avatar)
+	Lick(&model)
+	log.Print(model.Avatar)
+}