Martini session not moving between requests - go

Question

I am writing a web app using the martini-contrib session library. I seem to have run into an issue though. My session don't seem to be moving between requests in the browser.
I have followed the exact guidelines that were outline in the example code, yet my code does not work. Below is the pertinent parts:
Login page:
m.Get("/login", binding.Bind(LoginForm{}), func(r render.Render, session sessions.Session, form LoginForm) string {
// Get info from the database.
conn, err := sql.Open("sqlite3", "ocdns.db")
defer conn.Close()
// Prepare the statement.
stmt, err := conn.Prepare(`
SELECT user_id, username, name_first, name_last, role, team_id
FROM User
WHERE username = ? AND password = ?
LIMIT 1;
`)
if err != nil {
log.Fatal(err)
}
defer stmt.Close()
// Query the database and set appropriate items if a row was actually returned.
var id string
var username string
var name_first string
var name_last string
var role string
var team_id string
err = stmt.QueryRow(form.Username, form.Password).Scan(&id, &username, &name_first, &name_last, &role, &team_id)
if err != nil {
log.Print("!! Bad login from " + form.Username + " with " + form.Password)
log.Fatal(err)
} else {
log.Print(">" + id + "<")
log.Print(">" + username + "<")
log.Print(">" + name_first + "<")
log.Print(">" + name_last + "<")
log.Print(">" + role + "<")
log.Print(">" + team_id + "<")
session.Set("id", id)
session.Set("username", username)
session.Set("name_first", name_first)
session.Set("name_last", name_last)
session.Set("role", role)
session.Set("team_id", team_id)
v := session.Get("name_first")
if v == nil {
log.Print("!! Uh oh.")
}
log.Print(v.(string))
return "OK"
}
return "Bad"
})
Session check page:
m.Get("/session", func(session sessions.Session) string {
var c Context
i := session.Get("id")
if i == nil {
c.Id = -1
}
c.Id, _ = strconv.Atoi(i.(string))
i = session.Get("username")
if i == nil {
log.Print("!! username")
}
if vs, ok := i.(string); ok {
c.Username = vs
} else {
log.Print(vs)
}
log.Print(c)
j, _ := json.Marshal(c)
return string(j)
})
Context struct:
type Context struct {
Id int `json:"id"`
Username string `json:"username"`
NameFirst string `json:"name_first"`
NameLast string `json:"name_last"`
Role string `json:"role"`
TeamId int `json:"team_id"`
}
Finally, my session declaration:
// Create session store.
store := sessions.NewCookieStore([]byte("secret123"))
m.Use(sessions.Sessions("my_session", store))
I have tried emptying my cache to get it to work, but it won't. I did look in Chrome's developer tools to see if storage was being used and I did find that the session moved between two pages, but the output of the session request was an empty Context json stucture.
What I need is to figure out why my session data seems to be getting lost between requests and what I can do to fix it. I have looked on here and while nothing fits my exact problem, I did find that there were ones that had problems with their web server configuration.
Thanks in advance!

Answer 1

You should change your first function call as follow to make sure it must goto session first before login.
m.Get("/login", SOME_FUNC_TO_SEESION, func(r render.Render, session sessions.Session, form LoginForm) string {
Here is sample video, hope it help you. Your code should work well.
https://gophercasts.io/lessons/8-auth-part-2