使用 Jinja 过滤器创建内容片段 [英] Create content snippet with Jinja filter
问题描述
我想为我的主页创建内容片段.一个示例帖子看起来像
I want to create content snippets for my home page. An example post looks something like
<p>Your favorite Harry Potter characters enter the Game of Thrones
universe, and you'll never guess what happens!</p>
<readmore/>
<p>...they all die</p>
在主页上,我只希望显示
之前的内容.我在想我可以在 Jinja 过滤器中使用 Beautiful Soup 来删除 readmore 和它之后的所有内容.如果不存在
,它应该在第一个换行符或段落结尾处剪裁.
On the home page I only want the things before <readmore/>
to show up. I'm thinking the I can use Beautiful Soup in a Jinja filter to cut out the readmore and all the content after it. It should clip at the first newline or paragraph end if no <readmore/>
is present.
我该怎么做?
推荐答案
没有必要使用 Beautiful Soup.只需检查文本中是否存在 <readmore/>
或其他一些子字符串,并对其进行拆分,或者是否没有在换行符上拆分.
There's no need to use Beautiful Soup. Just check if <readmore/>
or some other substring is present in the text, and split on it, or if it's not there split on newline.
from markupsafe import Markup
@app.template_filter()
def snippet(value):
for sep in ('<readmore/>', '<br/>', '<br>', '</p>'):
if sep in value:
break
else:
sep = '
'
return Markup(value.split(sep, 1)[0])
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