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pgsql.go
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pgsql.go
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package favdb
import (
"log"
"github.com/go-pg/pg/v10"
"github.com/go-pg/pg/v10/orm"
)
type PGSql struct {
Db *pg.DB
data UserFavorite
}
func NewPGSql(url string) *PGSql {
options, _ := pg.ParseURL(url)
db := pg.Connect(options)
err := createSchema(db)
if err != nil {
panic(err)
}
return &PGSql{
Db: db,
}
}
func (u *PGSql) Add(user UserFavorite) {
_, err := u.Db.Model(user).Insert()
if err != nil {
log.Println(err)
}
}
func (u *PGSql) Get(uid string) (result *UserFavorite, err error) {
log.Println("***Get Fav uUID=", uid)
err = u.Db.Model(&u.data).
Where("user_id = ?", uid).
Select()
if err != nil {
log.Println("Get err:", err)
return nil, err
}
log.Println("UserFavorite DB result= ", u.data)
return &u.data, nil
}
// ShowAll: Print all result.
func (u *PGSql) ShowAll() (result []UserFavorite, err error) {
log.Println("***Get All DB")
ret := []UserFavorite{}
err = u.Db.Model(&ret).Select()
if err != nil {
log.Println(err)
}
log.Println("***Start server all users =", ret)
if err != nil {
log.Println("open file error:", err)
}
return ret, nil
}
func (u *PGSql) Update(user *UserFavorite) (err error) {
log.Println("***Update Fav User=", u)
_, err = u.Db.Model(user).
Set("favorites = ?", user.Favorites).
Where("user_id = ?", user.UserId).
Update()
if err != nil {
log.Println("update err:", err)
}
// Update success, replace to memory.
u.data = *user
return nil
}
func createSchema(db *pg.DB) error {
models := []interface{}{
(*UserFavorite)(nil),
}
for _, model := range models {
err := db.Model(model).CreateTable(&orm.CreateTableOptions{
IfNotExists: true})
if err != nil {
log.Println("createSchema err:", err)
return err
}
}
return nil
}