========safe==============
|safe 可以当作html的tag渲染
====in view:
context['user_content1']="<b>Hello</b>"
context['user_content2']="<b>Hello</b>"
return render(request, template_name , context)
====in form.html
user_content1:{{ user_content1 }}
<br>
user_content2:{{ user_content2 | safe }}
