如何從 pyqt5 中的 QListView 獲取項目值？

Question

連接到我的數據庫后，我嘗試從 QListView 獲取所有項目值，但它沒有 text() 方法或任何其他我嘗試使用 model.data() 但它返回以下錯誤的東西：

文件“c:\Users\inter\Desktop\neosun\main copy 9.py”，第 88 行，在 addToPlaylist 項 = model.data(index, 1, Qt.DisplayRole) TypeError: data(self, QModelIndex, role: int = Qt.DisplayRole)：參數 1 具有意外類型“int”

class MainWindow(QMainWindow):
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)
        self.setGeometry(900,180,800,600)
        self.setWindowTitle("Media Display")
        self.setWindowIcon(QIcon('favicon.png'))
        self.model = QSqlQueryModel()
        self.model.setQuery("SELECT path FROM files")
        
        self.listview = QListView()
        self.listview.setModel(self.model)
        self.listview.setModelColumn(1)    
        self.getData()

    
    def getData(self):
        model = self.listview.model()
        for index in range(model.rowCount()):
            # item = model.data(index)
            item = model.data(index, 1, Qt.DisplayRole)
            print(item)
    
 

Answer 1

Qt uses the QModelIndex class to locate data within any model, so you cannot just use integers to access them, but model.index(row, column, parent=None) must be used instead (the optional parent argument is for multidimensional models, like樹模型）。

    def getData(self):
        model = self.listview.model()
        for row in range(model.rowCount()):
            index = model.index(row, 1)
            item = model.data(index, Qt.DisplayRole)
            print(item)