Checking to see if a user is logged in, and logging a user our

internal/render/render.go

@@ -32,6 +32,9 @@ func AddDefaultData(td *models.TemplateData, r *http.Request) *models.TemplateDa
 	td.Warning = app.Session.PopString(r.Context(), "warning")
 	td.Error = app.Session.PopString(r.Context(), "error")
 	td.CSRFToken = nosurf.Token(r)
+	if app.Session.Exists(r.Context(), "user_id") {
+		td.IsAuthenticated = 1
+	}
 	return td
 }