Python 不支持在未设置SRID的情况下调用transform（）

在生产服务器上，我收到附加的错误，而不是出现在开发服务器上。这两个环境都是相同的（相同的Django 1.6和Python 2.7版本，使用virtualenvs相同的RDBMS版本—一台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

视图中。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'),

这是一个完整的回溯，它没有给我提供任何关于我哪里做错了的信息

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），我不会尝试调用任何转换——我想——因为我使用相同的SRID渲染视图。我在这里重复一下，dev服务器上的相同请求可以无缝工作

到目前为止，我所尝试的：

• 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
• 已检查所有软件依赖项，并从的主干更新代码
• 检查模型定义：所有模型都有

  geom=models.MultiPolygonField（srid=4326）

  字段
• 在谷歌等网站上搜索类似的问题却没有任何运气

---

我没有更多的想法。欢迎任何建议

我可以通过卸载然后重新安装所有库（作为ubuntu包）、python解释器和所有代码，通过重新生成数据库（包括重新安装postgis），然后完全重新启动nginx（从而重新启动gunicorn），来解决我的问题。然而，没有更新任何库，所以我仍然不明白到底发生了什么