1 from django.db.models.manager import Manager

     2 from django.contrib.gis.db.models.query import GeoQuerySet

     3 

     4 class GeoManager(Manager):

     5     "Overrides Manager to return Geographic QuerySets."

     6 

     7     # This manager should be used for queries on related fields

     8     # so that geometry columns on Oracle and MySQL are selected

     9     # properly.

    10     use_for_related_fields = True

    11 

    12     def get_query_set(self):

    13         return GeoQuerySet(model=self.model)

    14 

    15     def area(self, *args, **kwargs):

    16         return self.get_query_set().area(*args, **kwargs)

    17 

    18     def centroid(self, *args, **kwargs):

    19         return self.get_query_set().centroid(*args, **kwargs)

    20 

    21     def difference(self, *args, **kwargs):

    22         return self.get_query_set().difference(*args, **kwargs)

    23 

    24     def distance(self, *args, **kwargs):

    25         return self.get_query_set().distance(*args, **kwargs)

    26 

    27     def envelope(self, *args, **kwargs):

    28         return self.get_query_set().envelope(*args, **kwargs)

    29 

    30     def extent(self, *args, **kwargs):

    31         return self.get_query_set().extent(*args, **kwargs)

    32 

    33     def gml(self, *args, **kwargs):

    34         return self.get_query_set().gml(*args, **kwargs)

    35 

    36     def intersection(self, *args, **kwargs):

    37         return self.get_query_set().intersection(*args, **kwargs)

    38 

    39     def kml(self, *args, **kwargs):

    40         return self.get_query_set().kml(*args, **kwargs)

    41 

    42     def length(self, *args, **kwargs):

    43         return self.get_query_set().length(*args, **kwargs)

    44 

    45     def make_line(self, *args, **kwargs):

    46         return self.get_query_set().make_line(*args, **kwargs)

    47     

    48     def mem_size(self, *args, **kwargs):

    49         return self.get_query_set().mem_size(*args, **kwargs)

    50 

    51     def num_geom(self, *args, **kwargs):

    52         return self.get_query_set().num_geom(*args, **kwargs)

    53 

    54     def num_points(self, *args, **kwargs):

    55         return self.get_query_set().num_points(*args, **kwargs)

    56 

    57     def perimeter(self, *args, **kwargs):

    58         return self.get_query_set().perimeter(*args, **kwargs)

    59 

    60     def point_on_surface(self, *args, **kwargs):

    61         return self.get_query_set().point_on_surface(*args, **kwargs)

    62 

    63     def scale(self, *args, **kwargs):

    64         return self.get_query_set().scale(*args, **kwargs)

    65 

    66     def svg(self, *args, **kwargs):

    67         return self.get_query_set().svg(*args, **kwargs)

    68 

    69     def sym_difference(self, *args, **kwargs):

    70         return self.get_query_set().sym_difference(*args, **kwargs)

    71 

    72     def transform(self, *args, **kwargs):

    73         return self.get_query_set().transform(*args, **kwargs)

    74 

    75     def translate(self, *args, **kwargs):

    76         return self.get_query_set().translate(*args, **kwargs)

    77 

    78     def union(self, *args, **kwargs):

    79         return self.get_query_set().union(*args, **kwargs)

    80 

    81     def unionagg(self, *args, **kwargs):

    82         return self.get_query_set().unionagg(*args, **kwargs)