Add BindUri (gin-gonic#1694)

* add BindUri

* fix bug

* fix code style

context.go

@@ -530,15 +530,25 @@ func (c *Context) BindYAML(obj interface{}) error {
 	return c.MustBindWith(obj, binding.YAML)
 }
 
+// BindUri binds the passed struct pointer using binding.Uri.
+// It will abort the request with HTTP 400 if any error occurs.
+func (c *Context) BindUri(obj interface{}) error {
+	if err := c.ShouldBindUri(obj); err != nil {
+		c.AbortWithError(http.StatusBadRequest, err).SetType(ErrorTypeBind)
+		return err
+	}
+	return nil
+}
+
 // MustBindWith binds the passed struct pointer using the specified binding engine.
 // It will abort the request with HTTP 400 if any error occurs.
 // See the binding package.
-func (c *Context) MustBindWith(obj interface{}, b binding.Binding) (err error) {
-	if err = c.ShouldBindWith(obj, b); err != nil {
+func (c *Context) MustBindWith(obj interface{}, b binding.Binding) error {
+	if err := c.ShouldBindWith(obj, b); err != nil {
 		c.AbortWithError(http.StatusBadRequest, err).SetType(ErrorTypeBind)
+		return err
 	}
-
-	return
+	return nil
 }
 
 // ShouldBind checks the Content-Type to select a binding engine automatically,

githubapi_test.go

@@ -290,8 +290,8 @@ func TestShouldBindUri(t *testing.T) {
 	router := Default()
 
 	type Person struct {
-		Name string `uri:"name"`
-		Id   string `uri:"id"`
+		Name string `uri:"name" binding:"required"`
+		Id   string `uri:"id" binding:"required"`
 	}
 	router.Handle("GET", "/rest/:name/:id", func(c *Context) {
 		var person Person
@@ -304,6 +304,46 @@ func TestShouldBindUri(t *testing.T) {
 	path, _ := exampleFromPath("/rest/:name/:id")
 	w := performRequest(router, "GET", path)
 	assert.Equal(t, "ShouldBindUri test OK", w.Body.String())
+	assert.Equal(t, http.StatusOK, w.Code)
+}
+
+func TestBindUri(t *testing.T) {
+	DefaultWriter = os.Stdout
+	router := Default()
+
+	type Person struct {
+		Name string `uri:"name" binding:"required"`
+		Id   string `uri:"id" binding:"required"`
+	}
+	router.Handle("GET", "/rest/:name/:id", func(c *Context) {
+		var person Person
+		assert.NoError(t, c.BindUri(&person))
+		assert.True(t, "" != person.Name)
+		assert.True(t, "" != person.Id)
+		c.String(http.StatusOK, "BindUri test OK")
+	})
+
+	path, _ := exampleFromPath("/rest/:name/:id")
+	w := performRequest(router, "GET", path)
+	assert.Equal(t, "BindUri test OK", w.Body.String())
+	assert.Equal(t, http.StatusOK, w.Code)
+}
+
+func TestBindUriError(t *testing.T) {
+	DefaultWriter = os.Stdout
+	router := Default()
+
+	type Member struct {
+		Number string `uri:"num" binding:"required,uuid"`
+	}
+	router.Handle("GET", "/new/rest/:num", func(c *Context) {
+		var m Member
+		c.BindUri(&m)
+	})
+
+	path1, _ := exampleFromPath("/new/rest/:num")
+	w1 := performRequest(router, "GET", path1)
+	assert.Equal(t, http.StatusBadRequest, w1.Code)
 }
 
 func githubConfigRouter(router *Engine) {