add cname files

dyndns/model/cname.go

@@ -0,0 +1,14 @@
+package model
+
+import (
+	"github.com/jinzhu/gorm"
+)
+
+// CName is a dns cname entry.
+type CName struct {
+	gorm.Model
+	Hostname string `gorm:"not null" form:"hostname" validate:"required,hostname"`
+	Target   Host   `validate:"required,hostname"`
+	TargetID uint
+	Ttl      int `form:"ttl" validate:"required,min=20,max=86400"`
+}