'HttpResponse' 没有属性 '_get_content

Question

我正在使用 Django 1.5.1 和 Piston 来支持 MongoDB 数据库。

在尝试测试其余 url 以检索数据时，我收到以下错误。

type object 'HttpResponse' has no attribute '_get_content'
Request Method: GET
Request URL:    http://127.0.0.1:8000/annotation/search?limit=20&uri=/document
Django Version: 1.5.1
Exception Type: AttributeError
Exception Value:    
type object 'HttpResponse' has no attribute '_get_content'
Exception Location: /home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/utils.py in HttpResponseWrapper, line 72
Python Executable:  /home/tank/sites/python/env.example/bin/python
Python Version: 2.7.4

问题是在活塞代码中产生的，不知道是什么原因。这是完整的回溯

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/annotations/search?limit=20&uri=/templates

Django Version: 1.5.1
Python Version: 2.7.4
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.flatpages',
 'app.modules.members',
 'app.modules.cms',
 'app.modules.annotator',
 'debug_toolbar')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'debug_toolbar.middleware.DebugToolbarMiddleware')


Traceback:
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/django/views/decorators/vary.py" in inner_func
  19.             response = func(*args, **kwargs)
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/resource.py" in __call__
  166.             result = self.error_handler(e, request, meth, em_format)
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/resource.py" in error_handler
  257.             result = rc.BAD_REQUEST
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/utils.py" in __getattr__
  51.         class HttpResponseWrapper(HttpResponse):
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/utils.py" in HttpResponseWrapper
  72.             content = property(HttpResponse._get_content, _set_content)            

Exception Type: AttributeError at /annotations/search
Exception Value: type object 'HttpResponse' has no attribute '_get_content'

/谢谢

“HttpResponseWrapper”对象的新错误引用没有属性“_is_string”：

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/annotations/search?limit=20&uri=

Django Version: 1.5.1
Python Version: 2.7.4
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.flatpages',
 'app.modules.members',
 'app.modules.cms',
 'app.modules.annotator',
 'debug_toolbar')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'debug_toolbar.middleware.DebugToolbarMiddleware')


Traceback:
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  115.                         response = callback(request, *callback_args, **callback_kwargs)
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/django/views/decorators/vary.py" in inner_func
  19.             response = func(*args, **kwargs)
File "/home/tank/sites/python/env.example/lib/python2.7/site-packages/piston/resource.py" in __call__
  184.         if isinstance(result, HttpResponse) and not result._is_string:

Exception Type: AttributeError at /annotations/search
Exception Value: 'HttpResponseWrapper' object has no attribute '_is_string'

Answer 1

在 Django 1.5 中，此代码：

def _get_content(self):
    # do some stuff

def _set_content(self):
    # do some stuff

content = property(_get_content, _set_content)

改为：

@property
def content(self):
    # do some stuff

@content.setter
def content(self, value):
    # do some stuff

所以，Django 1.5 没有_get_content 功能。您应该将 piston/utils.py 中的 HttpResponseWrapper 更改为如下内容：

class HttpResponseWrapper(HttpResponse):
    """
    Wrap HttpResponse and make sure that the internal
    _is_string/_base_content_is_iter flag is updated when the
    _set_content method (via the content property) is called
    """

    def _set_content(self, content):
        """
        Set the _container and _is_string /
        _base_content_is_iter properties based on the type of
        the value parameter. This logic is in the construtor
        for HttpResponse, but doesn't get repeated when
        setting HttpResponse.content although this bug report
        (feature request) suggests that it should:
        http://code.djangoproject.com/ticket/9403
        """
        is_string = False
        if not isinstance(content, basestring) and hasattr(content, '__iter__'):
            self._container = content
        else:
            self._container = [content]
            is_string = True
        if django.VERSION >= (1, 4):
            self._base_content_is_iter = not is_string
        else:
            self._is_string = is_string

    try:
        # Django versoin is older than 1.5

        content = property(HttpResponse._get_content, _set_content)

    except:
        # Django version 1.5

        @HttpResponse.content.setter
        def content(self, content):
            self._set_content(content)

让我知道它是否有效，我会将其提交给piston 代码。

---

关于第二个问题：也许你的版本太旧了。这个问题已经在thiscommit 中解决了。

Answer 2

您可以通过更新到此活塞前叉的最新版本来解决此问题： https://github.com/marcio0/django-piston/