如何使 pyqt5 多个输入小部件强制输入某些内容？

问题描述

我想在 pyqt5 中强制设置一些输入小部件。如果用户错过了强制性输入，我需要给出消息。在这种情况下，我想将强制性输入小部件设置为 self.comboComboBox and self.spinSpinBox 绝对是强制性的，而 self.plainTextEdit and self.doube_one_spinDoubleSpinBox or self.lineLineEdit and self.double_two_spinDoubleSpinBox 是强制性的。 以下是我尝试过的示例：

from PyQt5 import QtCore,QtGui,QtWidgets

class Ui_MainWindow(QtWidgets.QMainWindow):
    def setupUi(self,MainWindow):
        MainWindow.setobjectName("MainWindow")
        MainWindow.resize(334,417)
        MainWindow.setMinimumSize(QtCore.QSize(334,417))
        MainWindow.setMaximumSize(QtCore.QSize(334,417))
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setobjectName("centralwidget")
        self.frame = QtWidgets.qframe(self.centralwidget)
        self.frame.setGeometry(QtCore.QRect(20,10,291,351))
        self.frame.setFrameShape(QtWidgets.qframe.StyledPanel)
        self.frame.setFrameShadow(QtWidgets.qframe.Raised)
        self.frame.setobjectName("frame")
        self.pushButton = QtWidgets.QPushButton(self.frame)
        self.pushButton.setGeometry(QtCore.QRect(90,320,75,23))
        self.pushButton.setobjectName("pushButton")
        self.lineLabel = QtWidgets.QLabel(self.frame)
        self.lineLabel.setGeometry(QtCore.QRect(10,250,41,20))
        self.lineLabel.setobjectName("lineLabel")
        self.lineLineEdit = QtWidgets.QLineEdit(self.frame)
        self.lineLineEdit.setGeometry(QtCore.QRect(100,245,133,20))
        self.lineLineEdit.setobjectName("lineLineEdit")
        self.comboLabel = QtWidgets.QLabel(self.frame)
        self.comboLabel.setGeometry(QtCore.QRect(11,17,31,16))
        self.comboLabel.setobjectName("comboLabel")
        self.comboComboBox = QtWidgets.QComboBox(self.frame)
        self.comboComboBox.setGeometry(QtCore.QRect(98,121,20))
        self.comboComboBox.setobjectName("comboComboBox")
        self.spinLabel = QtWidgets.QLabel(self.frame)
        self.spinLabel.setGeometry(QtCore.QRect(11,43,19,16))
        self.spinLabel.setobjectName("spinLabel")
        self.spinSpinBox = QtWidgets.QSpinBox(self.frame)
        self.spinSpinBox.setGeometry(QtCore.QRect(98,20))
        self.spinSpinBox.setobjectName("spinSpinBox")
        self.doube_one_spinLabel = QtWidgets.QLabel(self.frame)
        self.doube_one_spinLabel.setGeometry(QtCore.QRect(13,180,79,21))
        self.doube_one_spinLabel.setobjectName("doube_one_spinLabel")
        self.doube_one_spinDoubleSpinBox = QtWidgets.QDoubleSpinBox(self.frame)
        self.doube_one_spinDoubleSpinBox.setGeometry(QtCore.QRect(100,131,20))
        self.doube_one_spinDoubleSpinBox.setobjectName("doube_one_spinDoubleSpinBox")
        self.double_two_spinLabel = QtWidgets.QLabel(self.frame)
        self.double_two_spinLabel.setGeometry(QtCore.QRect(10,275,81,16))
        self.double_two_spinLabel.setobjectName("double_two_spinLabel")
        self.double_two_spinDoubleSpinBox = QtWidgets.QDoubleSpinBox(self.frame)
        self.double_two_spinDoubleSpinBox.setGeometry(QtCore.QRect(100,20))
        self.double_two_spinDoubleSpinBox.setobjectName("double_two_spinDoubleSpinBox")
        self.plainTextEdit = QtWidgets.QPlainTextEdit(self.frame)
        self.plainTextEdit.setGeometry(QtCore.QRect(100,110,61))
        self.plainTextEdit.setobjectName("plainTextEdit")
        self.label = QtWidgets.QLabel(self.frame)
        self.label.setGeometry(QtCore.QRect(10,130,16))
        self.label.setobjectName("label")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0,334,21))
        self.menubar.setobjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setobjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)
        #
        self.pushButton.clicked.connect(self.okay)
        self.comboComboBox.addItems(["","One","Two"])

    def retranslateUi(self,MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setwindowTitle(_translate("MainWindow","MainWindow"))
        self.pushButton.setText(_translate("MainWindow","Okay"))
        self.lineLabel.setText(_translate("MainWindow","line"))
        self.comboLabel.setText(_translate("MainWindow","combo"))
        self.spinLabel.setText(_translate("MainWindow","spin"))
        self.doube_one_spinLabel.setText(_translate("MainWindow","doube_one_spin"))
        self.double_two_spinLabel.setText(_translate("MainWindow","double_two_spin"))
        self.label.setText(_translate("MainWindow","Plain Edit"))

    def okay(self):
        if self.comboComboBox.currentText() !='' and self.spinSpinBox.value() !=0 and\
           (self.plainTextEdit.toPlainText() !='' and self.doube_one_spinDoubleSpinBox.value() !=0.00) or\
           (self.lineLineEdit.text() !='' and self.double_two_spinDoubleSpinBox.value() != 0.00):
            QtWidgets.QMessageBox.about(self,"information","Done.")

        else:
            QtWidgets.QMessageBox.about(self,"required Fields are Mandatory.")


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

在我的示例中，如果我在 self.lineLineEdit 和 self.double_two_spinDoubleSpinBox 中填写了一些内容，即使 self.comboComboBox 和 self.spinSpinBox 为空，它也会打印“OKAY”。 如何解决这个问题？或者有什么办法吗？如果它简单易行，它非常有用。怎么办？

Update:

我的要求是我有 6 个小部件。 pair1(self.comboComboBox,self.spinSpinBox),pair2(self.plainTextEdit,self.doube_one_spinDoubleSpinBox),pair3(self.lineLineEdit,self.double_two_spinDoubleSpinBox)。我想将强制字段设置为 pair1 是强制性的。并且 (either pair2 or pair 3) 与 pair1 一起是必需的。

解决方法

根据评论，我得到了缺失的点并重新组合了组合。现在它的工作方式如下。

        if self.comboComboBox.currentText() !='' and self.spinSpinBox.value() !=0 and\
           ((self.plainTextEdit.toPlainText() !='' and self.doube_one_spinDoubleSpinBox.value() !=0.00) or\
           (self.lineLineEdit.text() !='' and self.double_two_spinDoubleSpinBox.value() != 0.00)):
            QtWidgets.QMessageBox.about(self,"Information","Done.")

        else:
            QtWidgets.QMessageBox.about(self,"Required Fields are Mandatory.")