[FEATURE REQUEST] - Add RedirectToRoute and RedirectBack

app.go

@@ -569,12 +569,13 @@ func (app *App) Mount(prefix string, fiber *App) Router {
 
 // Assign name to specific route.
 func (app *App) Name(name string) Router {
+	latestRoute.mu.Lock()
 	if strings.HasPrefix(latestRoute.route.path, latestGroup.prefix) {
 		latestRoute.route.Name = latestGroup.name + name
 	} else {
 		latestRoute.route.Name = name
 	}
-
+	latestRoute.mu.Unlock()
 	return app
 }
 

client_test.go

@@ -953,7 +953,7 @@ func Test_Client_Agent_Timeout(t *testing.T) {
 	go func() { utils.AssertEqual(t, nil, app.Listener(ln)) }()
 
 	a := Get("http://example.com").
-		Timeout(time.Millisecond * 100)
+		Timeout(time.Millisecond * 50)
 
 	a.HostClient.Dial = func(addr string) (net.Conn, error) { return ln.Dial() }
 

ctx.go

@@ -1060,6 +1060,51 @@ func (c *Ctx) Redirect(location string, status ...int) error {
 	return nil
 }
 
+// get URL location from route using parameters
+func (c *Ctx) getLocationFromRoute(route Route, params Map) (string, error) {
+	buf := bytebufferpool.Get()
+	for _, segment := range route.routeParser.segs {
+		if segment.IsParam {
+			for key, val := range params {
+				if key == segment.ParamName || segment.IsGreedy {
+					_, err := buf.WriteString(utils.ToString(val))
+					if err != nil {
+						return "", err
+					}
+				}
+			}
+		} else {
+			_, err := buf.WriteString(segment.Const)
+			if err != nil {
+				return "", err
+			}
+		}
+	}
+	location := buf.String()
+	bytebufferpool.Put(buf)
+	return location, nil
+}
+
+// RedirectToRoute to the Route registered in the app with appropriate parameters
+// If status is not specified, status defaults to 302 Found.
+func (c *Ctx) RedirectToRoute(routeName string, params Map, status ...int) error {
+	location, err := c.getLocationFromRoute(c.App().GetRoute(routeName), params)
+	if err != nil {
+		return err
+	}
+	return c.Redirect(location, status...)
+}
+
+// RedirectBack to the URL to referer
+// If status is not specified, status defaults to 302 Found.
+func (c *Ctx) RedirectBack(fallback string, status ...int) error {
+	location := c.Get(HeaderReferer)
+	if location == "" {
+		location = fallback
+	}
+	return c.Redirect(location, status...)
+}
+
 // Render a template with data and sends a text/html response.
 // We support the following engines: html, amber, handlebars, mustache, pug
 func (c *Ctx) Render(name string, bind interface{}, layouts ...string) error {

ctx_test.go

@@ -2035,6 +2035,105 @@ func Test_Ctx_Redirect(t *testing.T) {
 	utils.AssertEqual(t, "http://example.com", string(c.Response().Header.Peek(HeaderLocation)))
 }
 
+// go test -run Test_Ctx_RedirectToRouteWithParams
+func Test_Ctx_RedirectToRouteWithParams(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/user/:name", func(c *Ctx) error {
+		return c.JSON(c.Params("name"))
+	}).Name("user")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+
+	c.RedirectToRoute("user", Map{
+		"name": "fiber",
+	})
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/user/fiber", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
+// go test -run Test_Ctx_RedirectToRouteWithOptionalParams
+func Test_Ctx_RedirectToRouteWithOptionalParams(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/user/:name?", func(c *Ctx) error {
+		return c.JSON(c.Params("name"))
+	}).Name("user")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+
+	c.RedirectToRoute("user", Map{
+		"name": "fiber",
+	})
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/user/fiber", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
+// go test -run Test_Ctx_RedirectToRouteWithOptionalParamsWithoutValue
+func Test_Ctx_RedirectToRouteWithOptionalParamsWithoutValue(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/user/:name?", func(c *Ctx) error {
+		return c.JSON(c.Params("name"))
+	}).Name("user")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+
+	c.RedirectToRoute("user", Map{})
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/user/", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
+// go test -run Test_Ctx_RedirectToRouteWithGreedyParameters
+func Test_Ctx_RedirectToRouteWithGreedyParameters(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/user/+", func(c *Ctx) error {
+		return c.JSON(c.Params("+"))
+	}).Name("user")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+
+	c.RedirectToRoute("user", Map{
+		"+": "test/routes",
+	})
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/user/test/routes", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
+// go test -run Test_Ctx_RedirectBack
+func Test_Ctx_RedirectBack(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/", func(c *Ctx) error {
+		return c.JSON("Home")
+	}).Name("home")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+	c.RedirectBack("/")
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
+// go test -run Test_Ctx_RedirectBackWithReferer
+func Test_Ctx_RedirectBackWithReferer(t *testing.T) {
+	t.Parallel()
+	app := New()
+	app.Get("/", func(c *Ctx) error {
+		return c.JSON("Home")
+	}).Name("home")
+	app.Get("/back", func(c *Ctx) error {
+		return c.JSON("Back")
+	}).Name("back")
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+	c.Request().Header.Set(HeaderReferer, "/back")
+	c.RedirectBack("/")
+	utils.AssertEqual(t, 302, c.Response().StatusCode())
+	utils.AssertEqual(t, "/back", c.Get(HeaderReferer))
+	utils.AssertEqual(t, "/back", string(c.Response().Header.Peek(HeaderLocation)))
+}
+
 // go test -run Test_Ctx_Render
 func Test_Ctx_Render(t *testing.T) {
 	t.Parallel()
@@ -2300,6 +2399,19 @@ func Benchmark_Ctx_Render_Engine(b *testing.B) {
 	utils.AssertEqual(b, "<h1>Hello, World!</h1>", string(c.Response().Body()))
 }
 
+// go test -v -run=^$ -bench=Benchmark_Ctx_Get_Location_From_Route -benchmem -count=4
+func Benchmark_Ctx_Get_Location_From_Route(b *testing.B) {
+	app := New()
+	c := app.AcquireCtx(&fasthttp.RequestCtx{})
+	defer app.ReleaseCtx(c)
+	app.Get("/user/:name", func(c *Ctx) error {
+		return c.SendString(c.Params("name"))
+	}).Name("User")
+	for n := 0; n < b.N; n++ {
+		c.getLocationFromRoute(app.GetRoute("User"), Map{"name": "fiber"})
+	}
+}
+
 type errorTemplateEngine struct{}
 
 func (t errorTemplateEngine) Render(w io.Writer, name string, bind interface{}, layout ...string) error {

utils/convert.go

@@ -5,9 +5,11 @@
 package utils
 
 import (
+	"fmt"
 	"reflect"
 	"strconv"
 	"strings"
+	"time"
 	"unsafe"
 )
 
@@ -83,3 +85,51 @@ func ByteSize(bytes uint64) string {
 	result = strings.TrimSuffix(result, ".0")
 	return result + unit
 }
+
+// ToString Change arg to string
+func ToString(arg interface{}, timeFormat ...string) string {
+	var tmp = reflect.Indirect(reflect.ValueOf(arg)).Interface()
+	switch v := tmp.(type) {
+	case int:
+		return strconv.Itoa(v)
+	case int8:
+		return strconv.FormatInt(int64(v), 10)
+	case int16:
+		return strconv.FormatInt(int64(v), 10)
+	case int32:
+		return strconv.FormatInt(int64(v), 10)
+	case int64:
+		return strconv.FormatInt(v, 10)
+	case uint:
+		return strconv.Itoa(int(v))
+	case uint8:
+		return strconv.FormatInt(int64(v), 10)
+	case uint16:
+		return strconv.FormatInt(int64(v), 10)
+	case uint32:
+		return strconv.FormatInt(int64(v), 10)
+	case uint64:
+		return strconv.FormatInt(int64(v), 10)
+	case string:
+		return v
+	case []byte:
+		return string(v)
+	case bool:
+		return strconv.FormatBool(v)
+	case float32:
+		return strconv.FormatFloat(float64(v), 'f', -1, 32)
+	case float64:
+		return strconv.FormatFloat(v, 'f', -1, 64)
+	case time.Time:
+		if len(timeFormat) > 0 {
+			return v.Format(timeFormat[0])
+		}
+		return v.Format("2006-01-02 15:04:05")
+	case reflect.Value:
+		return ToString(v.Interface(), timeFormat...)
+	case fmt.Stringer:
+		return v.String()
+	default:
+		return ""
+	}
+}

utils/convert_test.go

@@ -61,3 +61,21 @@ func Test_CopyString(t *testing.T) {
 	res := CopyString("Hello, World!")
 	AssertEqual(t, "Hello, World!", res)
 }
+
+func Test_ToString(t *testing.T) {
+	t.Parallel()
+	res := ToString([]byte("Hello, World!"))
+	AssertEqual(t, "Hello, World!", res)
+	res = ToString(true)
+	AssertEqual(t, "true", res)
+	res = ToString(uint(100))
+	AssertEqual(t, "100", res)
+}
+
+// go test -v -run=^$ -bench=ToString -benchmem -count=2
+func Benchmark_ToString(b *testing.B) {
+	hello := []byte("Hello, World!")
+	for n := 0; n < b.N; n++ {
+		ToString(hello)
+	}
+}