base.py 文件源码

def __init__(self, *args, **kwargs):
        # Before we get too far, make sure pysqlite 2.5+ is installed.
        if Database.version_info < (2, 5, 0):
            raise ImproperlyConfigured('Only versions of pysqlite 2.5+ are '
                                       'compatible with SpatiaLite and GeoDjango.')

        # Trying to find the location of the SpatiaLite library.
        # Here we are figuring out the path to the SpatiaLite library
        # (`libspatialite`). If it's not in the system library path (e.g., it
        # cannot be found by `ctypes.util.find_library`), then it may be set
        # manually in the settings via the `SPATIALITE_LIBRARY_PATH` setting.
        self.spatialite_lib = getattr(settings, 'SPATIALITE_LIBRARY_PATH',
                                      find_library('spatialite'))
        if not self.spatialite_lib:
            raise ImproperlyConfigured('Unable to locate the SpatiaLite library. '
                                       'Make sure it is in your library path, or set '
                                       'SPATIALITE_LIBRARY_PATH in your settings.'
                                       )
        super(DatabaseWrapper, self).__init__(*args, **kwargs)
        self.features = DatabaseFeatures(self)
        self.ops = SpatiaLiteOperations(self)
        self.client = SpatiaLiteClient(self)
        self.introspection = SpatiaLiteIntrospection(self)