How to get the returned value?

_jao_victor_

Ok @jsulm and @JonB, so far I understood correctly, I did the tests and got the expected result, however, what if the buttons are not the ones from QDialog, but one that I implemented myself? The Cancel and OK buttons send the signals automatically when they are pressed, so how do I make my buttons (login and register) send their signals when they are pressed?

a

JonB

@_jao_victor_
Looks OK. Sorry, is there a question here?

_jao_victor_

@JonB yes i rewrote the text to explain it better, sorry.

JonB

@_jao_victor_

connect(loginButton, &QPushButton::clicked, accept);
connect(cancelButton, &QPushButton::clicked, reject);

You'll have to think a bit more carefully about the Register button. It does not do the same thing as the Login button, i.e. it does/should not cause the dialog to exit with "success" back to the main program for the user to continue into the main window.

That's for you to figure out what you want to do.

QDialog does not have to exit with only accept() or reject(). They use void QDialog::done(int r), and you can do the same with as many different r values as you please. That value is the return result when you go int result = dialog.exec().

_jao_victor_

@JonB I think I'm almost there :). I've been researching more and seeing the differences between
Build Time and Runtime and more, The single inheritance approach and The multiple inheritance approach however, as I am still a beginner I was a bit in doubt in which my app fits, I think in Compilation time and multiple inheritance, right?

This is my current code:

from PyQt5 import uic, QtWidgets
from PyQt5.QtWidgets import QDialog
from views.ui.login.telaLogin import Ui_Dialog
import sys
from control.exception_login import verification_login_user

class ViewLogin(QDialog):
    def __init__(self):
        super().__init__()
        self.viewlogin = Ui_Dialog()
        self.viewlogin.setupUi(self)

        self.viewlogin.button_login.clicked.connect(self.login)

    def login(self):

        self.login = self.viewlogin.login_login.text() 
        self.password = self.viewlogin.login_password.text()

        erro =  verification_login_user(self.login, self.password)
    
        if (erro == False):
            self.close()
            sessao_user = (self.login, self.senha) 
            #self.done(r) # I understand its functionality # PROBLEM
            #return (sessao_user) # PROBLEM
            self.accept() # The problem would end here if I didn't need the variable sessao_user
             
        elif(erro == True):
            self.viewlogin.login_login.setText('')
            self.viewlogin.login_password.setText('')
            

app = QtWidgets.QApplication([])

w = ViewLogin()
result = w.exec_()

print(result)  # desired result = (' login', 'password') 
# real result = 1 

sys.exit(app.exec_())

But unfortunately I saw that done () only takes numbers as a parameter and does not allow another type, and the return doesn't work here either, so I still don't have the sessao_user variable in main.py because I need to pass it to the main window.

JonB

@_jao_victor_
Indeed the accept/reject/done() only tell the caller what button the user to exit the modal dialog. That is all you actually return from it. But there is nothing to stop the caller still querying what is in the dialog's widgets:

result = viewlogin.exec()
if not result:
    sys.exit(1)
username = viewlogin.login_login.text()

If you want to do it via your sessao_user you will have to use Python's global to access that. Or, you could wrap it up with some method from the dialog:

class ViewLogin(QDialog):
    def sessao_user(self):
        return (self.login, self.senha)

result = viewlogin.exec()
if not result:
    sys.exit(1)
sessao_user = viewlogin.sessao_user()

In your def login() do not do self.close(). self.accept/reject/done() close the dialog.

_jao_victor_

@JonB Fiddled, thank you. And thanks to @jsulm too. But clarify one last question, as the documentation is in C ++, I didn't understand it very well, but is my app running time? Do you use the multiple or single inheritance approach?

JonB

@_jao_victor_ said in How to get the returned value?:

I didn't understand it very well, but is my app running time?

I don't know what this means :)

Do you use the multiple or single inheritance approach?

Neither of these seems to be relevant to what you have been asking about :)

_jao_victor_

@JonB sorry, I don't speak your language, but the question is does my app followBuild Time or Runtime?

JonB

@_jao_victor_

viewlogin = uic.loadUi('./views/ui/login/viewLogin.ui') 
mainview =  uic.loadUi('./views/ui/main/mainview.ui')

Since you are loading a .ui file at runtime you are following the pattern from Run Time Form Processing.