[Qgis-user] Features geometry/attributes inconsistency ?

[Jésahel Benoist]

Hi,

I'm working with a lot of layers and need to copy/paste features with
attributes from source layers to destination layers, within a rectangle.

I'm using the "multiple selection by rectangle" plugin by Felipe Ferrari
and Luiz Andrade to make a selection on all my layers and looked for a
script but do not find something simple and easy.

So I've rapidly coded this :
---
def selectedFeaturesCopy(sourceLayerName, destLayerName):

    sourceLYR = QgsProject.instance().mapLayersByName(sourceLayerName)[0]
    destLYR = QgsProject.instance().mapLayersByName(destLayerName)[0]
    destLYR.startEditing()
    data_provider = destLYR.dataProvider()
    data_provider.addFeatures(sourceLYR.getSelectedFeatures())
    destLYR.commitChanges()

selectedFeaturesCopy('source layer', 'destination layer')
---
Badly, I see that, as I rode elsewhere, it only copies geometry, not
attributes. I'll have to parse every feature to add the attributes.

So far I understand that features are only geometries. Why is it called
features then ?

More than that, when I look at the QGIS code, I see that some functions
dedicated to features do work with attributes too ?! Isn't it inconsistent ?

Wouldn't it be more efficient that some methods, like addFeature(), have at
least a flag to add attributes too ? In the addFeature() code (
https://qgis.org/api/qgsvectorlayer_8cpp_source.html#l00993), the flag
seems unused.

Regards,

Jésahel
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