go - Undefined err variable

Question

As a Go "newb" I'm not sure why I'm receiving the errors undefined err and undefinded user in the console when compiling the program.

I have:

if req.Id == nil {
    user, err := signup(C, c, &req)
} else {
    user, err := update(C, c, &req)
}

if err != nil {
    c.JSON(http.StatusOK, err)
    return
}

doSomethingWith(user)

I realise I could probably declare the err and user variables before the conditional block but I would like to know why this doesn't work. Is it something to do with creating two new variables in one go?

UDPATE Getting in a bit of a mess with this.

I've now got:

user := core.User{}
if req.Id == nil {
    user, err := signup(C, c, &req)
} else {
    user, err := update(C, c, &req)
}

cleanUser(&user)

and my errors now are user declared and not used. I'm not tackling the err part at the moment but I'm unsure why I'm getting errors about the user.

Answer 1

Waitting for answers