How to parse value from (echo.context).Get ?

[topben]

Hi !
I'm using set and get of echo.context
EX:

// Code in Middleware
const (
	myTestKey  = "123456"
)
ctx.Set(myTestKey, payload)

======

// Code in POST
fmt.Print(ctx.Get(myTestKey))

&{9020cd95-01a7-46bd-ac9b-0cb5a964d6ff   2022-10-24 15:45:51.121328461 +0000 UTC 2022-10-24 16:45:51.121328528 +0000 UTC}{"time":"2022-10-24T16:17:21.188055301Z" .........

but I don't know how to get the data from this ?
should i bind it or something else ?
====== Update
I tried to convert it to Payload type
ex:

c.Get(myTestKey).(Payload).MyData

it works but i got :

{"time":"2022-10-24T17:54:28.976589762Z","level":"-","prefix":"echo","file":"recover.go","line":"113","message":"[PANIC RECOVER] interface conversion: interface {} is *token.Payload, not api.Payload goroutine 38 

changed to the *token.Payload solves this problem.

[aldas]

You need to cast into correct type

value, ok := c.Get("KEY").(time.Time)
if !ok {
	return errors.New("invalid type for KEY")
}

NB: if you set it as pointer you need to cast it back to pointer. Or if you set value into context and its type is pointer to token.Payload you need to cast it back to *token.Payload when you Get it from token. api.Payload is different type/struct I assume.

or longer example:

func main() {
	e := echo.New()

	e.Use(func(next echo.HandlerFunc) echo.HandlerFunc {
		return func(c echo.Context) error {
			c.Set("KEY", time.Now())
			return next(c)
		}
	})

	e.GET("/", func(c echo.Context) error {
		value, ok := c.Get("KEY").(time.Time)
		if !ok {
			return errors.New("invalid type for KEY")
		}
		return c.JSON(http.StatusOK, map[string]time.Time{"time": value})
	})

	if err := e.Start(":8080"); err != http.ErrServerClosed {
		log.Fatal(err)
	}
}

[topben]

thank you for the example!