不支持在未设置 SRID 的情况下调用 transform()

Question

在生产服务器上，我收到附加错误，但在开发服务器上没有出现。两种环境是相同的（相同的 Django 1.6 和 Python 2.7 版本，使用 virtualenvs 相同的 RDBMS 版本 - postgresql 9.1 服务器，在本地运行，配置与生产环境相当相似）。

我想，有问题的代码在views.py：

from djgeojson.views import GeoJSONLayerView

class FilteredMapLayer(GeoJSONLayerView):
    def get_queryset(self):
        qs = super(FilteredMapLayer, self).get_queryset()
        bbox_data = self.request.GET.get('bbox', None)
        if bbox_data is not None:
            bbox_data = ( x for x in map(float, bbox_data.split(',')))
            bbox = Polygon.from_bbox(bbox_data)
            features = qs.filter(geom__bboverlaps=bbox)
        else:
            features = qs
        return features

因为这是 urlpattern 定义，在请求时会触发错误

url(r'^data.geojson$', FilteredMapLayer.as_view(model=MyModelName, precision = 2, simplify = 0.5), name='myurl'),

这里是完整的回溯，它没有提供任何关于我做错了什么的信息......

Traceback (most recent call last):
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 29, in _wrapper
    return bound_func(*args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
    response = view_func(request, *args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/utils/decorators.py", line 25, in bound_func
    return func(self, *args2, **kwargs2)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/views.py", line 51, in dispatch
    return super(GeoJSONLayerView, self).dispatch(*args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/base.py", line 87, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/views/generic/list.py", line 153, in get
    return self.render_to_response(context)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/views.py", line 41, in render_to_response
    **options)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/serializers.py", line 335, in serialize
    self.serialize_queryset(queryset)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/serializers.py", line 277, in serialize_queryset
    self.handle_field(obj, self.geometry_field)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/serializers.py", line 177, in handle_field
    geometry = self._handle_geom(GEOSGeometry(value))
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/djgeojson/serializers.py", line 159, in _handle_geom
    geometry.transform(self.srid)
  File "/home/m2user/webapps/enea/local/lib/python2.7/site-packages/django/contrib/gis/geos/geometry.py", line 510, in transform
    raise GEOSException("Calling transform() with no SRID set is not supported")

.... 因为如果我检查存储在模型中的特征，它们都定义了一个 SRID (4326)，我不想调用任何转换 - 我想 - 因为我正在使用相同的 SRID。而且，我在这里重复一遍，开发服务器上的相同请求可以无缝运行。

到目前为止我已经尝试过：

• 从头开始重新创建数据库，重新加载所有数据。使用 Django admin 我可以查看/编辑存储的功能
• 检查所有软件依赖并更新来自https://github.com/makinacorpus/django-geojson主干的代码
• 检查模型定义：都有geom = models.MultiPolygonField(srid=4326) 字段
• 在 Google 和 SO 中搜索类似问题，但没有任何运气

我没有更多的想法。欢迎提出任何建议！

Answer 1

我能够通过卸载然后重新安装所有库（作为 ubuntu 包）、python 解释器、所有代码、重新生成数据库（包括重新安装 postgis）然后完全重启来解决我的问题nginx（因此是gunicorn）。但是，没有更新任何库，所以我仍然不明白到底发生了什么。