add lottery

model/lottery.go

@@ -0,0 +1,25 @@
+package model
+
+import (
+	"database/sql"
+	"time"
+)
+
+// Lottery -
+type Lottery struct {
+	ID      string    `db:"id" cc:"id"`
+	Type    string    `db:"type" cc:"type"`
+	Message string    `db:"message" cc:"message"`
+	Ctime   time.Time `db:"ctime" cc:"ctime"`
+	Mtime   time.Time `db:"mtime" cc:"mtime"`
+}
+
+// GetRandomLotteryByType -
+func GetRandomLotteryByType(t string) (p *Lottery, err error) {
+	p = &Lottery{}
+	err = x.Get(p, `select * from "public"."lottery" where "type" = $1 order random() limit 1`, t)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	return
+}