语法

1. 变量 {{var}} , render _ template("index.html", title = 'Home', user = user)

2. 控制

   {% if title %}
   <title>{{title}} - microblog</title>
   {% else %}
   <title>Welcome to microblog</title>
   {% endif %}
   

3. 循环

   {% for post in posts %}
   <p>{{post.author.nickname}} says: <b>{{post.body}}</b></p>
   {% endfor %}
   

4. 模板继承

   1. super(base.html):
      其他内容 ＋ {% block content %}{% endblock %} 如base 里面定义导航栏， 其他页面用 block content 扩展其他内容
   2. sub(index.html):
      {% extends "base.html" %} {% block content %}

      Hi, {{user.nickname}}!

      {% for post in posts %}

      {{post.author.nickname}} says: {{post.body}}

      {% endfor %}