// Creating a new request context with a logger and a request ID ctx := context.NewContext() ctx.Data["request_id"] = uuid.New() ctx.Logger = log.New(os.Stdout, "", log.LstdFlags) // Parsing URL parameters page, _ := ctx.QueryInt("page") limit, _ := ctx.QueryInt("limit") // Handling errors and returning an HTTP response if err := validateRequestData(ctx); err != nil { return ctx.JSON(400, ResponseError{Error: err.Error()}) } // Adding a middleware function to the request chain ctx.Use(func(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { ctx.Data["user_agent"] = r.Header.Get("User-Agent") next.ServeHTTP(w, r) }) }) // Rendering an HTML template and passing data to it ctx.HTML(200, "template_name", map[string]interface{}{ "title": "Page Title", "items": []string{"item1", "item2", "item3"}, })Overall, the `github.com/gogits/gogs/modules/context` package is a useful library for managing request context and handling middleware in web applications built with Go.