PyQt5.如何更改表格的内容？

Question

我正在开发一个客户记录程序，该程序将用于美容院。

我的对话框窗口很好地填充了表格小部件，但数据只附加到确切的时间，而不是日期。我的表格中只有一页。所以我需要我的表格小部件与日历连接，这样我就可以通过单击日历中的数字来选择日期，表格中会填充该确切日期的数据。当我在“setDateTime”小部件中选择对话框中的日期时，应该将那一天的数据放在表格中。甚至可以使用表格小部件来完成它吗？也许我在对话窗口中创建的数据应该被保存，然后由 tablewidget 使用。

所以我有我的主窗口 这是它的完整代码

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
    MainWindow.setObjectName("MainWindow")
    MainWindow.resize(860, 803)
    self.centralwidget = QtWidgets.QWidget(MainWindow)
    self.centralwidget.setObjectName("centralwidget")
    self.calendarWidget = QtWidgets.QCalendarWidget(self.centralwidget)
    self.calendarWidget.setGeometry(QtCore.QRect(0, 0, 331, 191))
    self.calendarWidget.setObjectName("calendarWidget")
    self.addclient = QtWidgets.QPushButton(self.centralwidget)
    self.addclient.setGeometry(QtCore.QRect(0, 350, 331, 81))
    font = QtGui.QFont()
    font.setFamily("Verdana")
    font.setPointSize(10)
    self.addclient.setFont(font)
    self.addclient.setObjectName("addclient")
    self.uslugi = QtWidgets.QPushButton(self.centralwidget)
    self.uslugi.setEnabled(True)
    self.uslugi.setGeometry(QtCore.QRect(0, 270, 331, 81))
    font = QtGui.QFont()
    font.setFamily("Verdana")
    font.setPointSize(10)
    self.uslugi.setFont(font)
    self.uslugi.setObjectName("uslugi")
    self.mastera = QtWidgets.QPushButton(self.centralwidget)
    self.mastera.setGeometry(QtCore.QRect(0, 190, 331, 81))
    font = QtGui.QFont()
    font.setFamily("Verdana")
    font.setPointSize(10)
    self.mastera.setFont(font)
    self.mastera.setObjectName("mastera")
    self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
    self.tableWidget.setGeometry(QtCore.QRect(330, 0, 521, 781))
    self.tableWidget.setObjectName("tableWidget")
    self.tableWidget.setColumnCount(5)
    self.tableWidget.setRowCount(25)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(0, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(1, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(2, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(3, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(4, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(5, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(6, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(7, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(8, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(9, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(10, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(11, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(12, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(13, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(14, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(15, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(16, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(17, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(18, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(19, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(20, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(21, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(22, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(23, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setVerticalHeaderItem(24, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    font = QtGui.QFont()
    font.setStyleStrategy(QtGui.QFont.PreferAntialias)
    item.setFont(font)
    self.tableWidget.setHorizontalHeaderItem(0, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setHorizontalHeaderItem(1, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setHorizontalHeaderItem(2, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setHorizontalHeaderItem(3, item)
    item = QtWidgets.QTableWidgetItem()
    self.tableWidget.setHorizontalHeaderItem(4, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(0, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(1, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(2, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(3, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(4, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(5, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(6, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(7, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(8, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(9, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(10, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(11, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(12, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(13, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(14, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(15, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(16, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(17, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(18, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(19, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(20, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(21, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(22, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(23, 0, item)
    item = QtWidgets.QTableWidgetItem()
    item.setTextAlignment(QtCore.Qt.AlignCenter)
    self.tableWidget.setItem(24, 0, item)
    MainWindow.setCentralWidget(self.centralwidget)
    self.statusbar = QtWidgets.QStatusBar(MainWindow)
    self.statusbar.setObjectName("statusbar")
    MainWindow.setStatusBar(self.statusbar)

    self.retranslateUi(MainWindow)
    QtCore.QMetaObject.connectSlotsByName(MainWindow)

对话窗口

class Ui_Dialog(object):
def setupUi(self, Dialog):
    Dialog.setObjectName("Dialog")
    Dialog.resize(281, 176)
    self.comboBox = QtWidgets.QComboBox(Dialog)
    self.comboBox.setGeometry(QtCore.QRect(90, 10, 71, 22))
    self.comboBox.setObjectName("comboBox")
    self.comboBox.addItem("")
    self.comboBox_2 = QtWidgets.QComboBox(Dialog)
    self.comboBox_2.setGeometry(QtCore.QRect(10, 10, 71, 22))
    self.comboBox_2.setObjectName("comboBox_2")
    self.comboBox_2.addItem("")
    self.dateTimeEdit = QtWidgets.QDateTimeEdit(Dialog)
    self.dateTimeEdit.setGeometry(QtCore.QRect(10, 60, 194, 22))
    self.dateTimeEdit.setObjectName("dateTimeEdit")
    self.label_2 = QtWidgets.QLabel(Dialog)
    self.label_2.setGeometry(QtCore.QRect(10, 40, 91, 16))
    self.label_2.setObjectName("label_2")
    self.lineEdit = QtWidgets.QLineEdit(Dialog)
    self.lineEdit.setGeometry(QtCore.QRect(150, 110, 113, 20))
    self.lineEdit.setObjectName("lineEdit")
    self.label_3 = QtWidgets.QLabel(Dialog)
    self.label_3.setGeometry(QtCore.QRect(150, 90, 121, 16))
    self.label_3.setObjectName("label_3")
    self.lineEdit_2 = QtWidgets.QLineEdit(Dialog)
    self.lineEdit_2.setGeometry(QtCore.QRect(10, 110, 113, 20))
    self.lineEdit_2.setObjectName("lineEdit_2")
    self.label_4 = QtWidgets.QLabel(Dialog)
    self.label_4.setGeometry(QtCore.QRect(10, 90, 111, 16))
    self.label_4.setObjectName("label_4")
    self.pushButton = QtWidgets.QPushButton(Dialog)
    self.pushButton.setGeometry(QtCore.QRect(150, 140, 111, 23))
    self.pushButton.setObjectName("pushButton")
    self.pushButton_2 = QtWidgets.QPushButton(Dialog)
    self.pushButton_2.setGeometry(QtCore.QRect(10, 140, 111, 23))
    self.pushButton_2.setObjectName("pushButton_2")

    self.retranslateUi(Dialog)
    QtCore.QMetaObject.connectSlotsByName(Dialog)

def retranslateUi(self, Dialog):
    _translate = QtCore.QCoreApplication.translate
    Dialog.setWindowTitle(_translate("Dialog", "Новый клиент"))
    self.comboBox.setItemText(0, _translate("Dialog", "Услуга"))
    self.comboBox_2.setItemText(0, _translate("Dialog", "Мастер"))
    self.label_2.setText(_translate("Dialog", "Дата и время:"))
    self.label_3.setText(_translate("Dialog", "Контактный номер:"))
    self.label_4.setText(_translate("Dialog", "Имя клиента"))
    self.pushButton.setText(_translate("Dialog", "Добавить клиента"))
    self.pushButton_2.setText(_translate("Dialog", "Отмена записи"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())

这里是所有功能

import sys
from interface import *
from dialog import *
from Services import *
from MastersList import *

from PyQt5 import QtCore, QtGui, QtWidgets

class Dialog(QtWidgets.QDialog, Ui_Dialog):
    def __init__(self, parent=None):
        QtWidgets.QDialog.__init__(self, parent)
        self.setupUi(self)
        # cancel
        self.pushButton_2.clicked.connect(self.reject)
        # accept
        self.pushButton.clicked.connect(self.accept)
        self.dateTimeEdit.setDisplayFormat("d/M/yy hh:mm")

    def data(self):
        master = self.comboBox_2.currentText()
        service = self.comboBox.currentText()
        name = self.lineEdit_2.text()
        contact_number = self.lineEdit.text()
        time = self.dateTimeEdit.time()
        return master, service, name, contact_number, time

class Services(QtWidgets.QDialog,Ui_SForm):
    def __init__(self, parent=None):
        QtWidgets.QDialog.__init__(self, parent)
        self.setupUi(self)

class Masters(QtWidgets.QDialog,Ui_Form):
    def __init__(self, parent=None):
        QtWidgets.QDialog.__init__(self, parent)
        self.setupUi(self)

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self, parent=None):
        QtWidgets.QMainWindow.__init__(self, parent)
        self.setupUi(self)
        self.addclient.clicked.connect(self.onAddClient)
        self.mastera.clicked.connect(self.AddMaster)
        self.uslugi.clicked.connect(self.AddService)
        self.masters = Masters(self)
        self.services = Services(self)
        self.dialog = Dialog(self)

        proxy = QtCore.QSortFilterProxyModel()
        proxy.setSourceModel(self.masters.tableWidget.model())
        proxy.setFilterRegExp(".*\S.*")
        self.dialog.comboBox_2.setModel(proxy)

        proxy2 = QtCore.QSortFilterProxyModel()
        proxy2.setFilterRegExp(".*\S.*")
        proxy2.setSourceModel(self.services.tableWidget.model())
        self.dialog.comboBox.setModel(proxy2)
        self.dialog.comboBox.setModelColumn(0)

    def AddService(self):
        self.services.show()

    def AddMaster(self):
        self.masters.show()

    def onAddClient(self):
        if self.dialog.exec_() == QtWidgets.QDialog.Accepted:
            master, service, name, contact_number, time = self.dialog.data()
            row = int(QtCore.QTime(8, 0).secsTo(time) / (30 * 60))
            if row >= 0:
                for k, text in enumerate([master, service, name, contact_number]):
                    self.tableWidget.setItem(row, k + 1, QtWidgets.QTableWidgetItem(text))


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())

Answer 1

用QTableWidget提供的模型是不可能实现逻辑的，因为每次添加一个term都会增加应用程序的内存。在您的评论中您说您要更改项目，如果您这样做会删除以前的数据，因此您无法再次使用它。

正确的做法是将信息保存在可以是 .xml、.csv 等的文件中，然后使用某种方法过滤并显示信息，此外还要创建更新数据的方法。实现上述的一种简单方法是使用数据库，在这种情况下一个不错的选择是使用 sqlite，您必须在其中创建表：

def createConnection():
    db = QSqlDatabase.addDatabase("QSQLITE")
    db.setDatabaseName(QDir.current().filePath("data.db"))
    if not db.open():
        QMessageBox.critical(None, "Cannot open database",
                             "Unable to establish a database connection.\n"
                             "This example needs SQLite support. Please read "
                             "the Qt SQL driver documentation for information how "
                             "to build it.\n\n"
                             "Click Cancel to exit.",
                             QMessageBox.Cancel)
        return False

    query = QSqlQuery()
    query.exec("create table IF NOT EXISTS product(id INTEGER PRIMARY KEY AUTOINCREMENT, "
               "date_and_time DATETIME, master VARCHAR(140), service VARCHAR(140), name VARCHAR(140),"
               "Contact_Number VARCHAR(140))")

    return True

然后创建一个处理该类型数据的模型，Qt 提供了处理该类型数据的QSqlTableModel 类。但是要使其正常工作，您必须具有预设的日期格式，并且在您的情况下，观察到它是 8:00、8:30、...、20:00，即从 8:00 到 20 的时间： 00 每半小时间隔一次，为此我们必须验证条目并将其四舍五入到正确的值，此外如果只有数据必须更新但必须创建。

self.model = QSqlTableModel()
self.model.setTable("product")

---

def onAddClient(self):
    client = ClientDialog(self)
    proxy = QSortFilterProxyModel()
    proxy.setSourceModel(self.view.model())
    proxy.setFilterRegExp(".*\S.*")
    client.masterCombo.setModel(proxy)
    client.masterCombo.setModelColumn(2)
    client.serviceCombo.setModel(proxy)
    client.serviceCombo.setModelColumn(3)

    if client.exec_() == ClientDialog.Accepted:
        master, service, name, contact_number, datetime = client.data()
        time = datetime.time()
        if QTime(8, 0) > time or QTime(20, 0) < time:
            return
        datetime = QDateTime(datetime.date(), QTime(8, 0).addSecs(30*60*int(QTime(8, 0).secsTo(time)/(30*60))))
        print(datetime)
        query = QSqlQuery()
        query.prepare("SELECT * FROM product WHERE date_and_time=:date_and_time")
        query.bindValue(":date_and_time", datetime)
        query.exec_()
        if query.next():
            id = query.value(0)
            query.prepare("UPDATE product SET master= :master, service=:service, name=:name, "
                          "Contact_Number=:contact_number where id = :id")
            query.bindValue(":id", id)
        else:
            query.prepare("INSERT INTO product(date_and_time, master, service, name, Contact_Number)"
                          "VALUES (:date_and_time, :master, :service, :name, :contact_number)")
            query.bindValue(":date_and_time", datetime)
        query.bindValue(":master", master)
        query.bindValue(":service", service)
        query.bindValue(":name", name)
        query.bindValue(":contact_number", contact_number)
        if not query.exec_():
            query.lastError().text()
        self.onSelectDay(self.calendarWidget.selectedDate())

使用以前的模型只会填充有数据的框，但在您的情况下，您希望所有 25 行的表都创建以下代理：

class CustomProxyModel(QIdentityProxyModel):
    def __init__(self, c, *args, **kwargs):
        QIdentityProxyModel.__init__(self, *args, **kwargs)
        self.mapping = [None] * 25
        self.c = c

    def rowCount(self, parent=QModelIndex()):
        return 25

    def index(self, row, column, parent=QModelIndex()):
        return self.createIndex(row, column)

    def mapToSource(self, proxyIndex):
        if proxyIndex.isValid():
            r = self.mapping[proxyIndex.row()]
            if r is not None:
                return self.sourceModel().index(r, proxyIndex.column())
        return QModelIndex()

    def mapFromSource(self, sourceIndex):
        if sourceIndex.isValid():
            return self.createIndex(self.mapping.index(sourceIndex.row()), sourceIndex.column())
        return QModelIndex()

    def data(self, proxyIndex, role=Qt.DisplayRole):
        if not proxyIndex.isValid():
            return QVariant()

        val = QIdentityProxyModel.data(self, proxyIndex, role)
        if proxyIndex.column() == self.c:
            if role == Qt.DisplayRole:
                return QTime(8, 0).addSecs(30 * 60 * proxyIndex.row()).toString("h:mm")
        return val

    def flags(self, index):
        return QIdentityProxyModel.flags(self, index) | Qt.ItemIsEnabled

    def fixModel(self):
        self.layoutAboutToBeChanged.emit()
        self.mapping = [None] * 25
        for r in range(self.sourceModel().rowCount()):
            ix = self.sourceModel().index(r, self.c)
            data = self.sourceModel().data(ix)
            self.mapping[
                QTime(8, 0).secsTo(QDateTime.fromString(data.replace("T", " "), "yyyy-MM-dd hh:mm:ss.zzz").time()) // (
                    30 * 60)] = r
        self.layoutChanged.emit()

每次单击日期时都必须更新此表，以便连接单击的信号并过滤数据：

self.calendarWidget.clicked.connect(self.onSelectDay)

---

def onSelectDay(self, date):
    start = QDateTime(date)
    stop = start.addDays(1)
    self.model.setFilter("date_and_time BETWEEN DATETIME('{}') AND DATETIME('{}')".
                         format(start.toString("yyyy-MM-dd hh:mm:ss.zzz"),
                                stop.toString("yyyy-MM-dd hh:mm:ss.zzz")))
    self.model.select()
    self.proxy.fixModel()

由于 QTableWidget 无法实现逻辑，我从头开始创建 GUI，除了 Master 和 Service 的对话框之外，它具有与您放置的相同的功能。

完整代码可以在以下link找到