context: add AllParams() (#187)

* add func AllParams() for Context

It is usefull with for-each.

* add unit test for AllParams()

add unit test for AllParams()

* Update context_test.go

* Update context_test.go

* Update context_test.go

* Update context_test.go

Co-authored-by: ᴜɴᴋɴᴡᴏɴ <u@gogs.io>

Author: xmh19936688

context.go

@@ -260,6 +260,11 @@ func (ctx *Context) Params(name string) string {
 	return ctx.params[name]
 }
 
+// AllParams returns all params.
+func (ctx *Context) AllParams() Params {
+	return ctx.params
+}
+
 // SetParams sets value of param with given name.
 func (ctx *Context) SetParams(name, val string) {
 	if name != "*" && !strings.HasPrefix(name, ":") {

context_test.go

@@ -20,6 +20,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
+	"sort"
 	"strings"
 	"testing"
 	"time"
@@ -171,6 +172,23 @@ func Test_Context(t *testing.T) {
 			So(resp.Body.String(), ShouldEqual, "user user 1 13 1.24 ")
 		})
 
+		Convey("Get all URL paramaters", func() {
+			m.Get("/:arg/:param/:flag", func(ctx *Context) string {
+				kvs := make([]string, 0, len(ctx.AllParams()))
+				for k, v := range ctx.AllParams() {
+					kvs = append(kvs, k + "=" + v)
+				}
+				sort.Strings(kvs)
+				return strings.Join(kvs, ",")
+			})
+			
+			resp := httptest.NewRecorder()
+			req, err := http.NewRequest("GET", "/1/2/3", nil)
+			So(err, ShouldBeNil)
+			m.ServeHTTP(resp,req)
+			So(resp.Body.String(), ShouldEqual, ":arg=1,:flag=3,:param=2")
+		})
+
 		Convey("Get file", func() {
 			m.Post("/getfile", func(ctx *Context) {
 				ctx.Query("")