使用Django将Unicode字符存储到MySQL时出现问题

Question

我有字符串

 u"Played Mirror's Edge\u2122"

哪个应该显示为

 Played Mirror's Edge™

但这是另一个问题.我的问题在于我将它放在模型中,然后尝试将其保存到数据库中.又名:

a = models.Achievement(name=u"Played Mirror's Edge\u2122")
a.save()

我得到了:

'ascii' codec can't encode character u'\u2122' in position 13: ordinal not in range(128)

完整堆栈跟踪(根据要求):

Traceback:
File "/var/home/ptarjan/django/mysite/django/core/handlers/base.py" in get_response
  86.                 response = callback(request, *callback_args, **callback_kwargs)
File "/var/home/ptarjan/django/mysite/yourock/views/alias.py" in import_all
  161.     types.import_all(type, alias)
File "/var/home/ptarjan/django/mysite/yourock/types/types.py" in import_all
  52.     return modules[type].import_all(siteAlias, alias)
File "/var/home/ptarjan/django/mysite/yourock/types/xbox.py" in import_all
  117.             achiever = self.add_achievement(dict, siteAlias, alias)
File "/var/home/ptarjan/django/mysite/yourock/types/base_profile.py" in add_achievement
  130.                 owner       = siteAlias,
File "/var/home/ptarjan/django/mysite/django/db/models/query.py" in get
  304.         num = len(clone)
File "/var/home/ptarjan/django/mysite/django/db/models/query.py" in __len__
  160.                 self._result_cache = list(self.iterator())
File "/var/home/ptarjan/django/mysite/django/db/models/query.py" in iterator
  275.         for row in self.query.results_iter():
File "/var/home/ptarjan/django/mysite/django/db/models/sql/query.py" in results_iter
  206.         for rows in self.execute_sql(MULTI):
File "/var/home/ptarjan/django/mysite/django/db/models/sql/query.py" in execute_sql
  1734.         cursor.execute(sql, params)
File "/var/home/ptarjan/django/mysite/django/db/backends/util.py" in execute
  19.             return self.cursor.execute(sql, params)
File "/var/home/ptarjan/django/mysite/django/db/backends/mysql/base.py" in execute
  83.             return self.cursor.execute(query, args)
File "/usr/lib/pymodules/python2.5/MySQLdb/cursors.py" in execute
  151.             query = query % db.literal(args)
File "/usr/lib/pymodules/python2.5/MySQLdb/connections.py" in literal
  247.         return self.escape(o, self.encoders)
File "/usr/lib/pymodules/python2.5/MySQLdb/connections.py" in string_literal
  180.                 return db.string_literal(obj)

Exception Type: UnicodeEncodeError at /import/xbox:bob
Exception Value: 'ascii' codec can't encode character u'\u2122' in position 13: ordinal not in range(128)

以及该模型的关键部分:

class Achievement(MyBaseModel):
    name = models.CharField(max_length=100, help_text="A human readable achievement name")

我在settings.py中使用了MySQL后端

DEFAULT_CHARSET = 'utf-8'

所以基本上,我应该如何处理所有这些unicode的东西？如果我远离有趣的角色并坚持使用UTF8,我希望它能"正常工作".唉,似乎并不那么容易.

Answer 1

感谢在此发帖的所有人.它确实有助于我的unicode知识(以及其他人学到的东西).

因为我试图简化我的问题并且没有提供所有信息,所以我们似乎都在咆哮错误的树.似乎我没有使用"REAL"unicode字符串,而是使用BeautifulSoup.NavigableString将其自身重命名为unicode字符串.因此所有的打印输出看起来像unicode,但它们不是.

在MySQLDB库的某个深处,他们无法处理这些字符串.

这有效:

>>> Achievement.objects.get(name = u"Mirror's Edge\u2122")
<Achievement: Mirror's Edge™>

另一方面 :

>>> b = BeautifulSoup(u"<span>Mirror's Edge\u2122</span>").span.string
>>> Achievement.objects.get(name = b)
... Exceptoins ...
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2122' in position 13: ordinal not in range(128)

但这有效:

>>> Achievement.objects.get(name = unicode(b))
<Achievement: Mirror's Edge™>

所以,再次感谢所有unicode的帮助,我相信它会派上用场.但现在 ...

警告:BeautifulSoup不会返回REAL unicode字符串,应该在执行任何有意义的操作之前强制使用unicode().