Django中文字符截取

Django里有 truncatewordsslice 两个模板过滤器可用于字符截取。truncatewords 不支持中文,所以一般情况下,中文字符截取用 slice 即可。但两者还是有区别的,比如有开发者提及后面的点点点。那么,就有了下面的解决方案,放这里备份。

以下代码来源点这里,2009年的资源)

#coding=utf8
from django.template import Library
from django.template.defaultfilters import stringfilter 

register = Library() 

@stringfilter
def truncatehanzi(value, arg):    
    """    
    Truncates a string after a certain number of words including    
    alphanumeric and CJK characters.     
    Argument: Number of words to truncate after.    
    """    
    try:
        bits = []
        for x in arg.split(u':'):
            if len(x) == 0:
                bits.append(None)
            else:
                bits.append(int(x))
        if int(x) < len(value):
            return value[slice(*bits)] + '...'
        return value[slice(*bits)]

    except (ValueError, TypeError):
        return value # Fail silently.
   
register.filter('truncatehanzi', truncatehanzi)
    原文作者:fgxs
    原文地址: https://segmentfault.com/a/1190000007482261
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