Add timestamp func date

types/timestamp.go

@@ -6,6 +6,7 @@ import (
 
 // 格式化
 const (
+	FormatDate     = "2006-01-02"
 	FormatDatetime = "2006-01-02 15:04:05"
 )
 
@@ -47,6 +48,14 @@ func (t Timestamp) Time() time.Time {
 	return time.Unix(t.Int64(), 0)
 }
 
+// Date 回傳日期字串
+func (t Timestamp) Date() string {
+	return time.
+		Unix(t.Int64(), 0).
+		In(Local).
+		Format(FormatDate)
+}
+
 // Datetime 回傳時間字串
 func (t Timestamp) Datetime() string {
 	return time.