jinja 2 filter 使用

文档地址 http://jinja.pocoo.org/docs/templates/#builtin-filters

indent

indent(s, width=4, indentfirst=False)

Return a copy of the passed string, each line indented by 4 spaces. The first line is not indented. If you want to change the number of spaces or indent the first line too you can pass additional parameters to the filter:

{{ mytext|indent(2, true) }}
    indent by two spaces and indent the first line too.

返回字符串，缩进相应的宽度

如果mytext 是一个html 元素 比如 <p> indent by two spaces and indent the first line too.</p>

将会变成 “<p> indent by two spaces and indent the first line too.</p>”

这不是我们想要的，这种情况下应该写成

{{ mytext|indent(2, true)|safe }}
    <p>indent by two spaces and indent the first line too.</p>

safe(value)

Mark the value as safe which means that in an environment with automatic escaping enabled this variable will not be escaped.

safe 会将值自动转义成安全的值，但在

{{ mytext|indent(2, true)|safe }}

表示这个值是安全的，不需要转义，会将值 直接显示的模板中

。。。。。未完