options.py 文件源码

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)