在pyside中使用QWizard的下一个插槽

from PySide2.QtWidgets import QApplication, QWizard, QWizardPage, QLabel, QVBoxLayout, QLineEdit

class MyWizard(QWizard):
    def __init__(self):
        super().__init__()
        self.addPage(FirstPage())
        self.addPage(SecondPage())
        self.addPage(ThirdPage())

    def nextId(self):
        current_id = self.currentId()
        if current_id == FirstPage.Id:
            # 根据用户的输入决定下一个页面
            if self.field("name") == "admin":
                return SecondPage.Id
            else:
                return ThirdPage.Id
        elif current_id == SecondPage.Id:
            # 根据用户的输入决定下一个页面
            if self.field("age") >= 18:
                return ThirdPage.Id
            else:
                return FirstPage.Id
        else:
            return -1

class FirstPage(QWizardPage):
    Id = 1

    def __init__(self):
        super().__init__()
        self.setTitle("First Page")
        layout = QVBoxLayout()
        label = QLabel("Enter your name:")
        self.name_edit = QLineEdit()
        layout.addWidget(label)
        layout.addWidget(self.name_edit)
        self.setLayout(layout)

    def nextId(self):
        return MyWizard.nextId(self)

class SecondPage(QWizardPage):
    Id = 2

    def __init__(self):
        super().__init__()
        self.setTitle("Second Page")
        layout = QVBoxLayout()
        label = QLabel("Enter your age:")
        self.age_edit = QLineEdit()
        layout.addWidget(label)
        layout.addWidget(self.age_edit)
        self.setLayout(layout)

    def nextId(self):
        return MyWizard.nextId(self)

class ThirdPage(QWizardPage):
    Id = 3

    def __init__(self):
        super().__init__()
        self.setTitle("Third Page")
        layout = QVBoxLayout()
        label = QLabel("Thank you for completing the wizard!")
        layout.addWidget(label)
        self.setLayout(layout)

    def nextId(self):
        return MyWizard.nextId(self)

if __name__ == "__main__":
    app = QApplication([])
    wizard = MyWizard()
    wizard.show()
    app.exec_()