Hiding column using PyQGIS

Question

How can I hide a column in QGIS 3 using PyQGIS:

In QGIS 2 it was quite simple:

editFormConf = layer.editFormConfig()
idx = layer.fields().indexFromName(columnName)
editFormConf.setWidgetType(idx, "Hidden")

I investigated, and now in QGIS 3 it has changed to something like

idx = layer.fields().indexFromName(columnName)
editor_widget_setup = QgsEditorWidgetSetup(...)
layer.setEditorWidgetSetup(idx, editor_widget_setup)
 

The problem is the use of the constructor QgsEditorWidgetSetup(...)

How to tell the constructor that this field is hidden?

Answer 1

In QGIS 3 is necessary to use QgsEditorWidgetSetup in order to define the widget type and configuration for the field.

The following is minimal working example in Python Console which set a widget of type 'TextEdit' with MultiLine property set to True:

vl = iface.activeLayer()
idx = vl.fields().indexFromName('field')

setup = QgsEditorWidgetSetup('TextEdit', {'IsMultiline': 'True'})
vl.setEditorWidgetSetup(idx, setup)

So, to hide your column it is enough to do:

setup = QgsEditorWidgetSetup('Hidden', {})
vl.setEditorWidgetSetup(idx, setup)