I need help making a menu bar in PyQt5

Question

I have been trying to implement a menu bar in my program for a few days now and i cant seem to get one running. I would like someone to look at my code and give me a template to follow to making a menu bar.

class MainWindow(QMainWindow):
    def __init__(self, databaseFilePath, userFilePath):
        super(MainWindow,self).__init__()
        self.moviesFilePath = moviesFilePath
        self.currentUserFilePath = currentUserFilePath
        self.createWindow()

    def changeFilePath(self):
        self.currentUserFilePath = functions_classes.changeFP()
        functions_classes.storeFP(self.currentUserFilePath, 1)

    def createWindow(self):
        self.setWindowTitle('Movies')
        #Menu Bar
        fileMenuBar = QMenuBar().addMenu('File')

The method changeFilePath is what I would like to be called when a menu option called 'Change user database location' is called from the menu bar File. I have read that actions are the key to this but when every i have tried to implement them they haven't worked.

Answer 1

The QMainWindow class already has a menu-bar.

So you just need to add a menu to it, and then add an action to that menu, like this:

    def createUI(self):
        ...
        menu = self.menuBar().addMenu('File')
        action = menu.addAction('Change File Path')
        action.triggered.connect(self.changeFilePath)

EDIT:

Here's a full, working example based on your example class:

from PyQt5 import QtWidgets

class MainWindow(QtWidgets.QMainWindow):
    def __init__(self, databaseFilePath, userFilePath):
        super(MainWindow,self).__init__()
        self.databaseFilePath = databaseFilePath
        self.userFilePath = userFilePath
        self.createUI()

    def changeFilePath(self):
        print('changeFilePath')
        # self.userFilePath = functions_classes.changeFilePath()
        # functions_classes.storeFilePath(self.userFilePath, 1)

    def createUI(self):
        self.setWindowTitle('Equipment Manager 0.3')
        menu = self.menuBar().addMenu('File')
        action = menu.addAction('Change File Path')
        action.triggered.connect(self.changeFilePath)   

if __name__ == '__main__':

    import sys
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow('some/path', 'some/other/path')
    window.show()
    window.setGeometry(500, 300, 300, 300)
    sys.exit(app.exec_())

Answer 2

The logic to add a Menubar with usable items is something like this

def createUI(self):
        self.setWindowTitle('Equipment Manager 0.3')
        #Menu Bar
        fileMenuBar = QMenuBar(self)
        menuFile = QMenu(fileMenuBar)
        actionChangePath = QAction(tr("Change Path"), self)
        fileMenuBar.addMenu(menuFile)
        menuFile.addAction(actionChangePath)

Then you just need to connect the action actionChangePath to the signal triggered() with something like

connect(actionChangePath,SIGNAL("triggered()"), changeFilePath)

Probably there are some better solution (but why did you not use the Designer ?), but this one should be work