How to strconv in echo c.param?

Question

Could anyone advise how to overcome this problem please ?

    func GetUserController(c echo.Context) error {
    id := c.Param("id")
    finduser := users[id]
    return c.JSON(http.StatusOK,finduser)}

    var users []User

    type User struct {
    Id       int    `json:"id"`
    }`

Results in error: invalid argument: index id (variable of type string) must be integer

invalid argument: index id (variable of type string) must be integer — wupssie, Mar 27 '22 at 22:46
Have a look at this package from the standard lib https://pkg.go.dev/strconv#hdr-Numeric_Conversions — pedromss, Mar 27 '22 at 22:48

score 1 · Answer 1 · answered Mar 28 '22 at 00:02

1

it return type string, you should convert into int

id, _ := strconv.Atoi(c.Param("id"))

answered Mar 28 '22 at 00:02

Akhmad Kurniawan

61
2

score 0 · Answer 2 · answered Jul 01 '22 at 14:07

c.Params always returns string. You are trying to use a string value for array index which is not possible.

finduser := users[id]

id is a string. It should be int value.

id := c.Param("id")
id, _ := strconv.Atoi(id)
// Check for err
finduser := users[id]

How to strconv in echo c.param?

2 Answers2