def connect_features(self, source, target):
"""
Connects the source feature with the target feature.
@param source: A QgsPointLocator.Match object. Its foreign key will be updated.
A dialog will be opened which asks the user for which foreign key(s) he wants to update.
@param target: A QgsPointLocator.Match object. This feature will be used as link target.
Its obj_id attribute will be used as primary key.
"""
dlg = QDialog(self.iface.mainWindow())
dlg.setWindowTitle(self.tr('Select properties to connect'))
dlg.setLayout(QFormLayout())
properties = list()
for prop in self.network_element_sources[source.layer()]['fields']:
if 'filter' in prop.keys():
if not prop['filter'](source, target):
continue
cbx = QCheckBox(prop['name'])
cbx.setObjectName(prop['id'])
if 'is_checked' in prop.keys():
cbx.setChecked(prop['is_checked'](source, target))
properties.append(cbx)
dlg.layout().addWidget(cbx)
btn_box = QDialogButtonBox(
QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
dlg.layout().addWidget(btn_box)
btn_box.accepted.connect(dlg.accept)
btn_box.rejected.connect(dlg.reject)
source_feature = self.get_feature_for_match(source)
target_feature = self.get_feature_for_match(target)
if dlg.exec_():
for cbx in properties:
if cbx.isChecked():
source_feature[cbx.objectName()] = target_feature['obj_id']
if not source.layer().isEditable():
self.iface.messageBar().pushMessage('QGEP', self.tr('Layer "{layername}" is not in edit mode').format(
layername=source.layer().name()), Qgis.Warning, 5)
elif source.layer().updateFeature(source_feature):
self.iface.messageBar().pushMessage('QGEP',
self.tr('Connected {} to {}').format(
source_feature['identifier'],
target_feature['identifier']),
Qgis.Info, 5)
else:
self.iface.messageBar().pushMessage('QGEP',
self.tr(
'Error connecting features'),
Qgis.Warning, 5)
self.reset()
