我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用django.contrib.gis.db.models.GeometryField()。
def formfield_for_dbfield(self, db_field, request, **kwargs): """ Overloaded from ModelAdmin so that an OpenLayersWidget is used for viewing/editing 2D GeometryFields (OpenLayers 2 does not support 3D editing). """ if isinstance(db_field, models.GeometryField) and db_field.dim < 3: if not HAS_GDAL and db_field.srid != self.map_srid: raise ImproperlyConfigured( "Map SRID is %s and SRID of `%s` is %s. GDAL must be " "installed to perform the transformation." % (self.map_srid, db_field, db_field.srid) ) # Setting the widget with the newly defined widget. kwargs['widget'] = self.get_map_widget(db_field) return db_field.formfield(**kwargs) else: return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, request, **kwargs)
def feature_kwargs(self, feat): """ Given an OGR Feature, this will return a dictionary of keyword arguments for constructing the mapped model. """ # The keyword arguments for model construction. kwargs = {} # Incrementing through each model field and OGR field in the # dictionary mapping. for field_name, ogr_name in self.mapping.items(): model_field = self.fields[field_name] if isinstance(model_field, GeometryField): # Verify OGR geometry. try: val = self.verify_geom(feat.geom, model_field) except GDALException: raise LayerMapError('Could not retrieve geometry from feature.') elif isinstance(model_field, models.base.ModelBase): # The related _model_, not a field was passed in -- indicating # another mapping for the related Model. val = self.verify_fk(feat, model_field, ogr_name) else: # Otherwise, verify OGR Field type. val = self.verify_ogr_field(feat[ogr_name], model_field) # Setting the keyword arguments for the field name with the # value obtained above. kwargs[field_name] = val return kwargs
def geometry_field(self): "Returns the GeometryField instance associated with the geographic column." # Use `get_field()` on the model's options so that we # get the correct field instance if there's model inheritance. opts = self.model._meta return opts.get_field(self.geom_field)
def make_multi(self, geom_type, model_field): """ Given the OGRGeomType for a geometry and its associated GeometryField, determine whether the geometry should be turned into a GeometryCollection. """ return (geom_type.num in self.MULTI_TYPES and model_field.__class__.__name__ == 'Multi%s' % geom_type.django)
def formfield_for_dbfield(self, db_field, **kwargs): """ Overloaded from ModelAdmin so that an OpenLayersWidget is used for viewing/editing 2D GeometryFields (OpenLayers 2 does not support 3D editing). """ if isinstance(db_field, models.GeometryField) and db_field.dim < 3: kwargs.pop('request', None) # Setting the widget with the newly defined widget. kwargs['widget'] = self.get_map_widget(db_field) return db_field.formfield(**kwargs) else: return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, **kwargs)
def get_db_converters(self, expression): converters = super(MySQLOperations, self).get_db_converters(expression) if isinstance(expression.output_field, GeometryField) and self.uses_invalid_empty_geometry_collection: converters.append(self.convert_invalid_empty_geometry_collection) return converters # https://dev.mysql.com/doc/refman/en/spatial-function-argument-handling.html # MySQL 5.7.5 adds support for the empty geometry collections, but they are represented with invalid WKT.
def formfield_for_dbfield(self, db_field, request, **kwargs): """ Overloaded from ModelAdmin so that an OpenLayersWidget is used for viewing/editing 2D GeometryFields (OpenLayers 2 does not support 3D editing). """ if isinstance(db_field, models.GeometryField) and db_field.dim < 3: # Setting the widget with the newly defined widget. kwargs['widget'] = self.get_map_widget(db_field) return db_field.formfield(**kwargs) else: return super(GeoModelAdmin, self).formfield_for_dbfield(db_field, request, **kwargs)
def contribute_to_class(self, cls, name, **kwargs): super(GeometryField, self).contribute_to_class(cls, name, **kwargs)
def formfield(self, **kwargs): defaults = { 'form_class': GoogleCoordsFormsField, 'zoom': self.zoom, } defaults.update(kwargs) return super(GeometryField, self).formfield(**defaults)
