.model()에서 데이터를 저장하고 가져 오는 방법

Question

아래의 코드는 QListView을 .model()으로 만듭니다. itemClicked에서 self.setData(index, QtCore.QVariant(inst))으로 이전에 저장된 값을 얻으려고 index.data()에 액세스하려고합니다. 그러나 저장된 값 (예 : ['Bison','Panther','Elephant'], ['Duck','Hawk','Pigeon'])을 반환하는 대신 키 이름 (예 : 'Animals', 'Birds' 또는 'Fish')을 반환합니다. 의도 한대로 작동하도록 코드에서 변경해야하는 항목은 무엇입니까?

from PyQt4 import QtCore, QtGui 
app=QtGui.QApplication(sys.argv) 

class Model(QtCore.QAbstractListModel): 
    def __init__(self, *args): 
     QtCore.QAbstractListModel.__init__(self, *args) 
     self.items=[]  
    def rowCount(self, parent=QtCore.QModelIndex()): 
     return len(self.items)  
    def data(self, index, role=QtCore.Qt.DisplayRole): 
     if index.isValid(): 
      if role == QtCore.Qt.ItemDataRole: 
       return self.data(index) 
      elif role==QtCore.Qt.DisplayRole:     
       return QtCore.QVariant(self.items[index.row()]) 

    def addItems(self, instDict): 
     for key in instDict: 
      inst=instDict.get(key) 
      index=QtCore.QModelIndex() 
      self.beginInsertRows(index, 0, 0) 
      self.setData(index, QtCore.QVariant(inst))  
     self.items.extend(instDict) 
     self.endInsertRows() 

class ListView(QtGui.QListView): 
    def __init__(self): 
     super(ListView, self).__init__() 
     self.model= Model() 
     self.model.addItems({'Animals':['Bison','Panther','Elephant'],'Birds':['Duck','Hawk','Pigeon'],'Fish':['Shark','Salmon','Piranha']}) 
     self.setModel(self.model) 
     self.clicked.connect(self.itemClicked) 
     self.show() 
    def itemClicked(self, index): 
     print 'self.data(index).toString(): %s'%index.data().toString() 
     print 'self.model.data(index).toString(): %s'%self.model.data(index).toString() 

window=ListView() 
sys.exit(app.exec_()) 

나중에 편집 :

여기

데이터 인수 중첩 사전 함께 완전히 동작 예이다.

from PyQt4 import QtCore, QtGui 
app=QtGui.QApplication(sys.argv) 
elements={'Animals':{1:'Bison',2:'Panther',3:'Elephant'},'Birds':{1:'Duck',2:'Hawk',3:'Pigeon'},'Fish':{1:'Shark',2:'Salmon',3:'Piranha'}} 

class Model(QtCore.QAbstractListModel): 
    def __init__(self): 
     QtCore.QAbstractListModel.__init__(self) 
     self.items=[] 
     self.modelDict={}  

    def rowCount(self, parent=QtCore.QModelIndex()): 
     return len(self.modelDict) 

    def data(self, index, role): 
     if index.isValid(): 
      if role==QtCore.Qt.ItemDataRole: 
       key=str(index.data().toString()) 
       returnedValue=self.modelDict.get(key) 
       return QtCore.QVariant(returnedValue) 

      elif role==QtCore.Qt.DisplayRole: 
       return QtCore.QVariant(self.items[index.row()]) 

    def addItems(self): 
     for key in self.modelDict: 
      index=QtCore.QModelIndex() 
      self.beginInsertRows(index, 0, 0) 
      self.items.append(key) 

      inst=self.modelDict.get(key) 
      self.setData(index, QtCore.QVariant(inst), QtCore.Qt.DisplayRole)    

     self.endInsertRows()   

class ListView(QtGui.QListView): 
    def __init__(self): 
     super(ListView, self).__init__() 
     self.model= Model() 
     self.model.modelDict=elements 
     self.model.addItems() 
     self.setModel(self.model) 
     self.clicked.connect(self.itemClicked) 
     self.show() 

    def itemClicked(self, index): 
     itemTitle=self.model.data(index, QtCore.Qt.DisplayRole).toString() 
     itemData=self.model.data(index, QtCore.Qt.ItemDataRole).toPyObject() 
     print 'itemTitle: "%s" itemData: %s'%(itemTitle,itemData) 

window=ListView() 
sys.exit(app.exec_()) 

Answer 1

from PyQt4 import QtCore, QtGui 
app=QtGui.QApplication(sys.argv) 

class Model(QtCore.QAbstractListModel): 
    def __init__(self, *args): 
     QtCore.QAbstractListModel.__init__(self, *args) 
     self.items=[] 
     self.modelDict = None 

    def rowCount(self, parent=QtCore.QModelIndex()): 
     return len(self.items) 

    def data(self, index, role=QtCore.Qt.DisplayRole): 
     if index.isValid(): 
      if role == QtCore.Qt.ItemDataRole: 
       return self.data(index) 
      elif role==QtCore.Qt.DisplayRole: 
       return QtCore.QVariant(self.items[index.row()]) 

    def getData(self, data): 
     return self.modelDict[str(data)] 

    def addItems(self, instDict): 
     for key in instDict: 
      inst=instDict.get(key) 
      index=QtCore.QModelIndex() 
      self.beginInsertRows(index, 0, 0) 
      self.setData(index, QtCore.QVariant(inst), QtCore.Qt.DisplayRole) 
     self.items.extend(instDict) 
     self.endInsertRows() 
     self.modelDict = instDict 

class ListView(QtGui.QListView): 
    def __init__(self): 
     super(ListView, self).__init__() 
     self.model= Model() 
     self.model.addItems({'Animals':['Bison','Panther','Elephant'],'Birds':['Duck','Hawk','Pigeon'],'Fish':['Shark','Salmon','Piranha']}) 
     self.setModel(self.model) 
     self.clicked.connect(self.itemClicked) 
     self.show() 

    def itemClicked(self, index): 
     print 'self.data(index).toString(): %s'%index.data().toString() 
     print 'self.model.data(index).toString(): %s'%self.model.getData(index.data().toString()) 

window=ListView() 
sys.exit(app.exec_()) 

나는이 오른쪽 방법입니다 확실하지 오전하지만,이 작품 : 마법처럼