39 lines
889 B
Go
39 lines
889 B
Go
package model
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import (
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"database/sql"
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"math/rand"
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"time"
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)
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// Lottery -
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type Lottery struct {
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ID string `db:"id" cc:"id"`
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Type string `db:"type" cc:"type"`
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Message string `db:"message" cc:"message"`
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Ctime time.Time `db:"ctime" cc:"ctime"`
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Mtime time.Time `db:"mtime" cc:"mtime"`
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}
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// GetRandomLotteryByType -
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func GetRandomLotteryByType(t string) (p *Lottery, err error) {
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parr, err := GetRandomLotteryByTypeAndLimit(t, 1)
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if err != nil {
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return nil, err
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}
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if parr == nil {
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return nil, nil
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}
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return parr[0], err
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}
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// GetRandomLotteryByTypeAndLimit -
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func GetRandomLotteryByTypeAndLimit(t string, limit int) (p []*Lottery, err error) {
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offset := rand.Intn(10)
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err = x.Select(p, `select * from "public"."lottery" where "type" = $1 order by random() offset $2 limit $3`, t, offset, limit)
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if err == sql.ErrNoRows {
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return nil, nil
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}
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return
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}
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