Add PureJSON for rendering unescaped json data

context.go

@@ -421,6 +421,12 @@ func (c *Context) JSON(code int, obj interface{}) {
 	}
 }
 
+// PureJSON serializes the given struct as JSON into the response body.
+// PureJSON, unlike JSON, does not replace special html characters with their unicode entities.
+func (c *Context) PureJSON(code int, obj interface{}) {
+	c.Render(code, render.PureJSON{Data: obj})
+}
+
 // XML serializes the given struct as XML into the response body.
 // It also sets the Content-Type as "application/xml".
 func (c *Context) XML(code int, obj interface{}) {

context_test.go

@@ -330,6 +330,21 @@ func TestContextRenderJSON(t *testing.T) {
 	assert.Equal(t, w.HeaderMap.Get("Content-Type"), "application/json; charset=utf-8")
 }
 
+// Tests that the response is serialized as JSON
+// and Content-Type is set to application/json
+// and special HTML characters are preserved
+func TestContextRenderPureJSON(t *testing.T) {
+	c, w, _ := CreateTestContext()
+	c.PureJSON(201, H{"foo": "bar", "html": "<b>"})
+
+	assert.Equal(t, w.Code, 201)
+	assert.Equal(
+		t,
+		w.Body.String(),
+		"{\"foo\":\"bar\",\"html\":\"<b>\"}\n")
+	assert.Equal(t, w.HeaderMap.Get("Content-Type"), "application/json; charset=utf-8")
+}
+
 // Tests that the response is serialized as JSON
 // we change the content-type before
 func TestContextRenderAPIJSON(t *testing.T) {

render/json.go

@@ -14,6 +14,10 @@ type (
 		Data interface{}
 	}
 
+	PureJSON struct {
+		Data interface{}
+	}
+
 	IndentedJSON struct {
 		Data interface{}
 	}
@@ -25,6 +29,13 @@ func (r JSON) Render(w http.ResponseWriter) error {
 	return WriteJSON(w, r.Data)
 }
 
+func (r PureJSON) Render(w http.ResponseWriter) error {
+	writeContentType(w, jsonContentType)
+	encoder := json.NewEncoder(w)
+	encoder.SetEscapeHTML(false)
+	return encoder.Encode(r.Data)
+}
+
 func (r IndentedJSON) Render(w http.ResponseWriter) error {
 	writeContentType(w, jsonContentType)
 	jsonBytes, err := json.MarshalIndent(r.Data, "", "    ")

render/render_test.go

@@ -33,6 +33,23 @@ func TestRenderJSON(t *testing.T) {
 	assert.Equal(t, w.Header().Get("Content-Type"), "application/json; charset=utf-8")
 }
 
+func TestRenderPureJSON(t *testing.T) {
+	w := httptest.NewRecorder()
+	data := map[string]interface{}{
+		"foo":  "bar",
+		"html": "<b>",
+	}
+
+	err := (PureJSON{data}).Render(w)
+
+	assert.NoError(t, err)
+	assert.Equal(
+		t,
+		w.Body.String(),
+		"{\"foo\":\"bar\",\"html\":\"<b>\"}\n")
+	assert.Equal(t, w.Header().Get("Content-Type"), "application/json; charset=utf-8")
+}
+
 func TestRenderIndentedJSON(t *testing.T) {
 	w := httptest.NewRecorder()
 	data := map[string]interface{}{