Question

我正在尝试通过在Python中实现MVP来理解它。我通过以下链接在Java中翻译了示例：https://www.dreamincode.net/forums/topic/353210-swing-passive-model-view-presenter-in-5-minutes/

此程序检查密码是否正确。该模型从数据库获取密码（在本例中为简单的字符串，称为密码）。

我不确定主要方法。我的代码是面向桌面的，而不是基于Web的，因此，据我所知，视图应该优先。我想知道流程是否正确。我很难过，主要是因为View调用了Presenter，Presenter也调用了View，所以哪个先出现，谁初始化谁？

在原始文章中，方法View.createUI（）在View构造函数（初始化程序）中初始化。我必须在main（）中最后调用它，因为在视图内部还没有初始化Presenter类，所以self.Presenter.login（passwd）还不存在。

谢谢

./main.py

import modules
def main():
    View = modules.View()
    Model = modules.Model()
    Presenter = modules.Presenter(View, Model)

    View.setPresenter(Presenter)
    View.createUI()

if __name__ == "__main__":
    main()



./models/Model.py

class Model:
    def __init__(self):
        self.password = "password"

    def setPassword(self, password):
        self.password = password

    def getPassword(self):
        return self.password



./models/View.py

class View:
    def __init__(self ):
        self.Presenter = None
        #self.createUI()

    def createUI(self):
        passwd = "password"
        self.Presenter.login(passwd)

    def setPresenter(self, Presenter):
        self.Presenter = Presenter

    def updateStatusLabel(self, text):
        print(text)



./models/Presenter.py

class Presenter:
    def __init__(self, View, Model):
        self.View = View
        self.Model = Model

    def login(self, password):
        result = "incorrect password"

        if self.Model.getPassword() == password:
            result = "Correct password"

        self.View.updateStatusLabel(result)



./models/__init__.py

from modules.Model import Model
from modules.View import View
from modules.Presenter import Presenter

Python中的MVP实现

0 个答案: