Sessions

Gobbl comes with session middleware. Here is a code snippet showing how to use the session middleware:

func main() {
	gobblr := gbl.New()
	gobblr.Use(gbl.RequestExtractionMiddleware())

	// We need to create a session store to keep our session data in
	// The session store is responsible for storing and retrieving data
	sessionStore := sess.MemoryStore()

	// Make sure to add the session middleware
	// The session middleware takes the session store as an argument
	gobblr.Use(sess.Middleware(sessionStore))

	gobblr.Use(func(c *gbl.Context) {

		basicResponse := c.R.(*gbl.BasicResponse)

		// Sessions are interacted with via flags
		// All session flags start with "sess:"
		// Any flag with the prefix "sess:" will be saved to the session
		if !c.HasFlag("sess:message-count") {
			c.Flag("sess:message-count", 0)
		}

		if !c.HasFlag("sess:name") {
			c.Flag("sess:name", "Joe")
		}

		// Increment our message count by 1
		// The session is automatically saved when the request is finished
		c.Flag("sess:message-count", c.GetIntFlag("sess:message-count")+1)

		// We can delete session variables simply by clearing their flags
		// This will clear the message-count variable when the user types "clear"
		if c.Request.Text == "clear" {
			basicResponse.Text("Cleared the session")
			c.ClearFlag("sess:message-count")
		}

		basicResponse.Text(
			fmt.Sprintf("Hello %s, you have sent: %d messages",
				c.GetFlag("sess:name"),
				c.GetFlag("sess:message-count")))
	})

	ci := gbl.ConsoleIntegration{}
	ci.Listen(gobblr)
}