redis/example/scan-struct/main.go

78 lines
1.6 KiB
Go

package main
import (
"context"
"github.com/davecgh/go-spew/spew"
"github.com/redis/go-redis/v9"
)
type Model struct {
Str1 string `redis:"str1"`
Str2 string `redis:"str2"`
Bytes []byte `redis:"bytes"`
Int int `redis:"int"`
Bool bool `redis:"bool"`
Ignored struct{} `redis:"-"`
}
func main() {
ctx := context.Background()
rdb := redis.NewClient(&redis.Options{
Addr: ":6379",
})
_ = rdb.FlushDB(ctx).Err()
// Set some fields.
if _, err := rdb.Pipelined(ctx, func(rdb redis.Pipeliner) error {
rdb.HSet(ctx, "key", "str1", "hello")
rdb.HSet(ctx, "key", "str2", "world")
rdb.HSet(ctx, "key", "int", 123)
rdb.HSet(ctx, "key", "bool", 1)
rdb.HSet(ctx, "key", "bytes", []byte("this is bytes !"))
return nil
}); err != nil {
panic(err)
}
var model1, model2 Model
// Scan all fields into the model.
if err := rdb.HGetAll(ctx, "key").Scan(&model1); err != nil {
panic(err)
}
// Or scan a subset of the fields.
if err := rdb.HMGet(ctx, "key", "str1", "int").Scan(&model2); err != nil {
panic(err)
}
spew.Dump(model1)
// Output:
// (main.Model) {
// Str1: (string) (len=5) "hello",
// Str2: (string) (len=5) "world",
// Bytes: ([]uint8) (len=15 cap=16) {
// 00000000 74 68 69 73 20 69 73 20 62 79 74 65 73 20 21 |this is bytes !|
// },
// Int: (int) 123,
// Bool: (bool) true,
// Ignored: (struct {}) {
// }
// }
spew.Dump(model2)
// Output:
// (main.Model) {
// Str1: (string) (len=5) "hello",
// Str2: (string) "",
// Bytes: ([]uint8) <nil>,
// Int: (int) 123,
// Bool: (bool) false,
// Ignored: (struct {}) {
// }
// }
}