通过提交表单而不刷新/重定向当前页面python来保存数据

Can anybody help me ?? I want to find a way to submit a form without refreshing the current page at all using Python and jQuery. In the same page I have two forms.I created a forms using WTForms. The question is how can I save data on the first form without refreshing the page, that means that the fields should not become empty. I tried using the code below, but it save data from the first form, but it returns empty fields. Can anybody help me ?? I want to find a way to