Creating GeoPackage file with one layer (or more) named different from file name using PyQGIS

Question

I want to create geopackage file using PyQGIS (for example database.gpkg) with one layer (named "myLayer"). I've tried this

from qgis.core import QgsVectorFileWriter
writer = QgsVectorFileWriter(fileName, 'UTF-8', layerFields, QgsWkbTypes.Unknown, QgsProject.instance().crs(), 'GPKG', newLayer='myLayer')

but got an error:

('newLayer' is an unknown keyword argument)

I can't use writeAsVectorFormatV2 because I need to create file first and than add it to QGIS.

@JGH no, this answer for saving exiting layers to geopackage and i know how to do this. But i need to create a geopackage first and then add it to Qgis. — BlackTesta, Jun 10 '21 at 16:57
Germán Carrillo's answer does just that: in a single step, it creates the geopackage and saves the layer — JGH, Jun 10 '21 at 17:24

score 2 · Accepted Answer · edited Aug 26 '23 at 09:21

2

Finally I found solution. It works for me:

from qgis.core import QgsVectorFileWriter, QgsCoordinateTransformContext
options = QgsVectorFileWriter.SaveVectorOptions()
options.layerName = 'myLayer'
transformContext = QgsCoordinateTransformContext()
writer = QgsVectorFileWriter.create(fileName, layerFields, QgsWkbTypes.Unknown, QgsProject.instance().crs(), transformContext, options)

edited Aug 26 '23 at 09:21

Taras

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answered Jun 10 '21 at 17:45

BlackTesta

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Creating GeoPackage file with one layer (or more) named different from file name using PyQGIS

1 Answers1