[Qgis-user] Setting configuration of a field in a vector layer

[Etienne Trimaille]

Hi,
You should use the method in QgsVectorLayer, otherwise, you are updating a
"copy" of the QgsField :

for field in layer.fields():
     layer.setFieldConfigurationFlag(
        layer.fields().indexFromName(field.name()),
Qgis.FieldConfigurationFlag.HideFromWfs, True)

On GitHub.com, I often search for a piece of code to see existing plugin
how they deal with a piece of code :
https://github.com/search?q=FieldConfigurationFlag+language%3APython&type=code&l=Python
There is only one script, as this API is quite new, but still nice to know
for next time.


Le jeu. 1 août 2024 à 17:09, Roland Berger via QGIS-User <
qgis-user at lists.osgeo.org> a écrit :

> Hi
>
> I try to set the configuration for a vector layer with python.
> Below is one of the many ways I tried to do it.
> Now I'm of out of ideas (chatgpt, intellij ai assistent and google as
> well) and would be thankful for a working example.
>
> Thanks Roland
>
> Code you can use in a Python Console Editor. First it creates a layer to
> use for the test and then tries to set the field configuration.
>
> # =================
> # Setup Layer with field
> # =================
>
> # Create a vector layer
> layer = QgsVectorLayer("Point?crs=EPSG:4326", "MyLayer", "memory")
> if not layer.isValid():
>      print("Failed to create the layer!")
>      sys.exit(1)
>
> # Add fields to the layer
> layer_data_provider = layer.dataProvider()
> layer_data_provider.addAttributes([QgsField("field1", QVariant.String)])
> layer.updateFields()
>
> # Add a feature to the layer
> feature = QgsFeature(layer.fields())
> feature.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(0, 0)))
> feature.setAttribute("field1", "value1")
> layer_data_provider.addFeature(feature)
> layer.updateExtents()
>
> # Add the layer to the project
> project = QgsProject.instance()
> project.addMapLayer(layer)
>
> # =================
> # Try to set field configuration
> # =================
> layer.startEditing()
> for field in layer.fields():
>      config_flags = field.configurationFlags()
>      config_flags |= Qgis.FieldConfigurationFlag.HideFromWfs
>      field.setConfigurationFlags(config_flags)
> #layer.updateFields()
> layer.commitChanges()
>
>
>
>
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