Before.go

func Profile(params martini.Params, r render.Render, req *http.Request, data base.TmplData, session sessions.Session) {
	data["Title"] = "Profile"

	// TODO: Need to check view self or others.
	user, err := models.GetUserByName(params["username"])
	if err != nil {
		log.Handle(200, "user.Profile", data, r, err)
		return
	}

	data["Owner"] = user

	req.ParseForm()
	tab := req.Form.Get("tab")
	data["TabName"] = tab

	switch tab {
	case "activity":
		feeds, err := models.GetFeeds(user.Id, 0, true)
		if err != nil {
			log.Handle(200, "user.Profile", data, r, err)
			return
		}
		data["Feeds"] = feeds
	default:

	}

	r.HTML(200, "user/profile", data)
}

Now.go

func Profile(ctx *context.Context, params martini.Params) {
	ctx.Data["Title"] = "Profile"

	// TODO: Need to check view self or others.
	user, err := models.GetUserByName(params["username"])
	if err != nil {
		ctx.Log(200, "user.Profile", err)
		return
	}

	ctx.Data["Owner"] = user

	tab := ctx.Query("tab")
	ctx.Data["TabName"] = tab

	switch tab {
	case "activity":
		feeds, err := models.GetFeeds(user.Id, 0, true)
		if err != nil {
			ctx.Log(200, "user.Profile", err)
			return
		}
		ctx.Data["Feeds"] = feeds
	default:

	}

	ctx.Render.HTML(200, "user/profile", ctx.Data)
}