self.load_from_json(filename)
def load_from_json(self,filename):
"""Load list of cities from given file"""
with open(filename,encoding="utf-8") as f:
self.city_list = json.load(f)
def rowCount(self, parent:QtCore.QModelIndex=...) -> int:
""" Return number of cities in the list"""
return len(self.city_list)
def data(self, index:QtCore.QModelIndex, role:int=...) -> typing.Any:
""" For given index and DisplayRole return name of the selected city"""
# Return None if the index is not valid
if not index.isValid():
return None
# If the role is the DisplayRole, return name of the city
if role == QtCore.Qt.DisplayRole:
return self.city_list[index.row()]["muniLabel"]
app = QGuiApplication(sys.argv)
view = QQuickView()
url = QUrl(VIEW_URL)
citylist_model = CityListModel(CITY_LIST_FILE)
ctxt = view.rootContext()
ctxt.setContextProperty('cityListModel',citylist_model)
view.setSource(url)
view.show()
app.exec_()
return d['name']
elif role == Qt.DecorationRole:
return Qt.black
elif role == PersonModel.MyRole:
return d['myrole']
return None
def populate(self):
self._data.append({'name':'Qt', 'myrole':'role1'})
self._data.append({'name':'PySide', 'myrole':'role2'})
if __name__ == '__main__':
app = QGuiApplication(sys.argv)
view = QQuickView()
view.setResizeMode(QQuickView.SizeRootObjectToView)
myModel = PersonModel()
myModel.populate()
view.rootContext().setContextProperty("myModel", myModel)
qmlFile = os.path.join(os.path.dirname(__file__), 'view.qml')
view.setSource(QUrl.fromLocalFile(os.path.abspath(qmlFile)))
if view.status() == QQuickView.Error:
sys.exit(-1)
view.show()
app.exec_()
# Deleting the view before it goes out of scope is required to make sure all child QML instances
# are destroyed in the correct order.
del view