django自定义过滤器AttributeError

Question

我正在使用safe过滤器，我想要转义为<code></code>标记中的HTML标记，这意味着<b>Hello</b>将呈现为 Hello 但<code><b>Hello</b></code>将呈现为<b>Hello</b>。所以我写自定义过滤器，但我得到这个错误：

Exception Type: AttributeError
Exception Value:'ResultSet' object has no attribute 'replace'
Exception Location: G:\python\Python\python practice\python website\firstpage\custom_filters\templatetags\custom_filters.py in code_escape, line 10

我的代码是：

from bs4 import BeautifulSoup

from django import template
register = template.Library()

@register.filter
def code_escape(value):
    soup = BeautifulSoup(value)
    response = soup.find_all('code')
    string = response.replace('<', '&lt;')
    string = string.replace('>', '&gt;')
    string = string.replace("'", '&#39')
    string = string.replace('"', '&quot')
    final_string = string.replace('&', '&amp')
    return final_string

template.html

.......

{% load sanitizer %}
{% load custom_filters %}

......

{{ content|escape_html|safe|linebreaks|code_escape }}

.......

Answer 1

find_all返回可迭代的ResultSet。我相信您可以编辑代码的.string值。尝试这样的事情：

soup = BeautifulSoup(value)
for code_tag in soup.find_all('code'):
    code_tag.string = code_tag.string.replace('<', '&lt;')
    code_tag.string = code_tag.string.replace('>', '&gt;')
    code_tag.string = code_tag.string.replace("'", '&#39')
    code_tag.string = code_tag.string.replace('"', '&quot')
    code_tag.string = code_tag.string.replace('&', '&amp')
return str(soup)