SpatialProxy

This class acts as a descriptor for spatial fields, providing lazy loading and initialization for geometry and raster objects. It handles the retrieval and conversion of field data into specific spatial types like GEOS, OGR, or GDALRaster instances. Additionally, it manages type validation and SRID assignment when setting spatial values on model instances.

Attributes

Attribute	Type	Description
_klass	class	The Geometry or Raster class used to instantiate or validate spatial objects retrieved from the database.
_load_func	callable	The callable used to transform raw field data into a spatial object, defaulting to the class specified in _klass.

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Constructor

Signature

def SpatialProxy(
    klass: class,
    field: [Field](../../../../../forms/fields/field.md?sid=django_forms_fields_field),
    load_func: callable = None
)

Parameters

Name	Type	Description
klass	class	The Geometry or Raster class to be used for the proxy.
field	[Field](../../../../../forms/fields/field.md?sid=django_forms_fields_field)	The corresponding field instance.
load_func	callable = None	An optional function used to load the spatial data; defaults to the provided klass if not specified.

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Signature

def SpatialProxy(
    klass: type,
    field: [Field](../../../../../forms/fields/field.md?sid=django_forms_fields_field),
    load_func: callable = None
) - > null

Parameters

Name	Type	Description
klass	type	The Geometry or Raster class used to instantiate spatial objects.
field	[Field](../../../../../forms/fields/field.md?sid=django_forms_fields_field)	The model field instance associated with this proxy.
load_func	callable = None	An optional factory function used to load the spatial data; defaults to the provided class.

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