mvc-sessions.md

Session Controller

Create a main.go file and copy-paste the following code snippets:

package main

import (
	"fmt"
	"time"

	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/mvc"
	"github.com/kataras/iris/v12/sessions"
)

func main() {
    app := iris.New()

	// Configure sessions manager as we used to.
	sess := sessions.New(sessions.Config{Cookie: "mysession_cookie_name"})
	app.Use(sess.Handler())

    visitApp := mvc.New(app)
    visitApp.Register(time.Now())
	visitApp.Handle(new(VisitController))

	app.Listen(":8080")
}

Controller

• The VisitController.Session is automatically binded to the current sessions.Session.
• The VisitController.StartTime is statically set to the server's start time with .Register(time.Now()) above.

type VisitController struct {
	Session *sessions.Session

	StartTime time.Time
}

func (c *VisitController) Get() string {
	// it increments a "visits" value of integer by one,
    // if the entry with key 'visits' doesn't exist
    // it will create it for you.
	visits := c.Session.Increment("visits", 1)
	// write the current, updated visits.
	since := time.Now().Sub(c.StartTime).Seconds()
	return fmt.Sprintf("%d visit(s) from my current session in %0.1f seconds of server's up-time",
		visits, since)
}

Run

Open a terminal session and execute:

$ go run main.go

1. Prepare a client, e.g. your browser
2. navigate to http://localhost:8080
3. refresh the page some times
4. close the browser
5. re-open the browser (if it wasn't in private mode) and re-play 2.