Hi,
I found the "QgsValueRelationSearchWidgetWrapper" class, which seems to
have a "setExpression" method - but I don't know how I can access and
change the QgsValueRelationSearchWidgetWrapper of an existing ComboBox
in the attribute form.
Andreas
On 2023-02-13 11:31, Andreas Neumann via QGIS-Developer wrote:
Hi,
I am looking for a code snippet in PyQGIS: how can I change the filter
expression for a value relation widget?
Technically, the widget seems to be a QComboBox. I can get access to
the combobox, e.g. to get the current value - but how can I access the
QGIS related functionality, like changing programmatically settings of
the value relation widget , such as the filter expression? I found the
QgsValueRelationFieldFormatter object, but it doesn't allow me to
change the filter expression. Any idea how I would change the filter
expression using Python?
Thank you for any hints,
Andreas
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