Django 'NoneType' 对象不可调用

Question

我尝试使用 BeautifulSoup 从 class、id 等中清除 html，然后保存它们。

清除 html 工作正常，但是当我尝试保存时，我得到：

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 754, in save
    force_update=force_update, update_fields=update_fields)
  File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 792, in save_base
    force_update, using, update_fields,
  File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 873, in _save_table
    forced_update)
  File "/usr/local/lib/python3.7/site-packages/django/db/models/base.py", line 926, in _do_update
    return filtered._update(values) > 0
  File "/usr/local/lib/python3.7/site-packages/django/db/models/query.py", line 799, in _update
    query.add_update_fields(values)
  File "/usr/local/lib/python3.7/site-packages/django/db/models/sql/subqueries.py", line 108, in add_update_fields
    val = val.resolve_expression(self, allow_joins=False, for_save=True)
TypeError: 'NoneType' object is not callable

我的代码：

@shared_task
def clean_article_html(article_id):
    try:
        article = Article.objects.get(id=article_id)
    except ObjectDoesNotExist:
        pass
    else:
        html = BeautifulSoup(article.body, 'html.parser')
        for tag in html():
            for attribute in ['class', 'id', 'name', 'style']:
                del tag[attribute]
        
        article.text = html
        article.save()

也许有人知道这段代码有什么问题。

解决方案：（感谢 AbdulAzizBarkat）

article.text = str(html)
article.save()

Answer 1

试试这个

@shared_task
def clean_article_html(article_id):
    try:
        article = Article.objects.get(id=article_id)
        html = BeautifulSoup(article.body, 'html.parser')
        for tag in html():
            for attribute in ['class', 'id', 'name', 'style']:
                del tag[attribute]
        
        article.text = html
        article.save()
    except ObjectDoesNotExist:
        pass