Hi,
thanks for the answer. I did other tests But without success.
I tried this code:
def formOpen(dialog, layerid, featureid):
widg = dialog.findChild(QgsRelationReferenceWidget, 'fk_via_cod');
msgBox = QMessageBox()
msgBox.setText(str(widg))
msgBox.exec_()
And the message box returns None as widget type
Then I tried this:
def formOpen(dialog, layerid, featureid):
widg = dialog.findChild(QgsRelationReferenceWidget(), 'fk_via_cod');
msgBox = QMessageBox()
msgBox.setText(str(widg.foregeinKey()))
msgBox.exec_()
it returns:
TypeError: QgsRelationReferenceWidget(QWidget): not enough arguments
Then I tried to specified the widget as QWidget o QComboBox:
def formOpen(dialog, layerid, featureid):
widg = dialog.findChild(QgsRelationReferenceWidget(QWidget),
'fk_via_cod');
msgBox = QMessageBox()
msgBox.setText(str(widg.foregeinKey()))
msgBox.exec_()
It returns:
TypeError: QgsRelationReferenceWidget(QWidget): argument 1 has unexpected type
'PyQt4.QtCore.pyqtWrapperType'
So I tried to use QgsRelationReferenceWidgetWrapper() instead of
QgsRelationReferenceWidget():
def formOpen(dialog, layerid, featureid):
widg = dialog.findChild(QgsRelationReferenceWidget(QWidget),
'fk_via_cod');
msgBox = QMessageBox()
msgBox.setText(str(widg.foregeinKey()))
msgBox.exec_()
It returns:
TypeError: QgsRelationReferenceWidgetWrapper(QgsVectorLayer, int, QWidget,
QgsMapCanvas, QgsMessageBar, QWidget parent=None): argument 1 has unexpected
type 'PyQt4.QtCore.pyqtWrapperType'
I don't understand how get the widget type. Where is the mistake?
If I change the edit widget properties for the field in "relation value"
instead of "Relation Reference", so I can use this code to recover the foregien
key:
def formOpen(dialog, layerid, featureid):
widg = dialog.findChild(QCombobox, 'fk_via_cod');
msgBox = QMessageBox()
msgBox.setText(str(widg.itemData(widg.currentIndex())))
msgBox.exec_()
Regards
Enrico Fiore
----Messaggio originale----
Da: [email protected]
Data: 07/04/2015 17.52
A: <[email protected]>
Ogg: Re: [Qgis-developer] Access to the value in a Relation reference wiget
You try get a QgsRelationReferenceWidget (in qgis.gui) (not sure though if
specifying this explicitly makes any difference in python though, it should
determine the real type anyway).
The methods you are looking for are then
setForeignKey()
http://qgis.org/api/classQgsRelationReferenceWidget.
html#a2e9fb74545d2bb4b697a88ca4e434600
and
foreignKey()
http://qgis.org/api/classQgsRelationReferenceWidget.
html#af1765af438f3dd4e642334a338a03ca4
Best,
Matthias
On 04/07/2015 10:47 AM, Enrico Fiore wrote:
Hi,
I am trying to acces to the value stored in a field defined as Relation
Reference widget, I tried this code:
dialog.findChild(QWidget,"fk_via_cod")
so I access to the object but not to the value.
I need to do something like this
nameFieldDir = dialog.findChild(QLineEdit,"cod_direzione")
How I can perform this?
Regards
Enrico Fiore
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