1 from django.db.models.manager import Manager

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

     3 from django.contrib.gis.db.models.sql.subqueries import insert_query

     4 

     5 class GeoManager(Manager):

     6     "Overrides Manager to return Geographic QuerySets."

     7 

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

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

    10     # properly.

    11     use_for_related_fields = True

    12 

    13     def get_query_set(self):

    14         return GeoQuerySet(model=self.model)

    15 

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

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

    18 

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

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

    21 

    22     def collect(self, *args, **kwargs):

    23         return self.get_query_set().collect(*args, **kwargs)

    24 

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

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

    27 

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

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

    30 

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

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

    33 

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

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

    36 

    37     def geojson(self, *args, **kwargs):

    38         return self.get_query_set().geojson(*args, **kwargs)

    39 

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

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

    42 

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

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

    45 

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

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

    48 

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

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

    51 

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

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

    54     

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

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

    57 

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

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

    60 

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

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

    63 

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

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

    66 

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

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

    69 

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

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

    72 

    73     def snap_to_grid(self, *args, **kwargs):

    74         return self.get_query_set().snap_to_grid(*args, **kwargs)

    75 

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

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

    78 

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

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

    81 

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

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

    84 

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

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

    87 

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

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

    90 

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

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

    93 

    94     def _insert(self, values, **kwargs):

    95         return insert_query(self.model, values, **kwargs)