Question

我有一个带分割器的窗口，在两个框架内有两个不同的表，产品类型与产品有关系，GUI运行并且工作正常但是当我在产品类型上更改名称时它没有更新产品表，为什么？但是一旦我重新开始改变了吗？有没有办法强制pyqt模型检查数据库的变化？

def initUI(self):

        self.connectDb()

        mainlayout = QtGui.QVBoxLayout(self)
        self.mode = QtGui.QAbstractItemView.SingleSelection

        self.topleft = QtGui.QFrame(self)
        self.topleft.setFrameShape(QtGui.QFrame.StyledPanel)
        self.topleftfill()
        self.topright = QtGui.QFrame(self)
        self.topright.setFrameShape(QtGui.QFrame.StyledPanel)
        self.toprightfill()

        splittertop = QtGui.QSplitter(QtCore.Qt.Horizontal)
        splittertop.addWidget(self.topleft)
        splittertop.addWidget(self.topright)
        mainlayout.addWidget(splittertop)
        self.setLayout(mainlayout)

def topleftfill(self):
    layout = QtGui.QVBoxLayout(self)
    model = QtSql.QSqlRelationalTableModel()
    model.setTable("Product")
    model.setRelation(6, QtSql.QSqlRelation("ProductType","ProductTypeID","Type"))
    model.select()
    model.setHeaderData(0, QtCore.Qt.Horizontal, "Product ID")
    model.setHeaderData(1, QtCore.Qt.Horizontal, "Product Name")
    model.setHeaderData(2, QtCore.Qt.Horizontal, "In Stock ")
    model.setHeaderData(3, QtCore.Qt.Horizontal, "Expiry Date")
    model.setHeaderData(4, QtCore.Qt.Horizontal, "Stock Alert")
    model.setHeaderData(5, QtCore.Qt.Horizontal, "Price")
    model.setHeaderData(6, QtCore.Qt.Horizontal, "Product Type")
    edit = QtSql.QSqlTableModel.OnFieldChange
    model.setEditStrategy(edit)
    view = QtGui.QTableView()
    view.setModel(model)
    view.setSelectionMode(self.mode)
    view.setItemDelegate(QtSql.QSqlRelationalDelegate(view))
    layout.addWidget(view)
    self.topleft.setLayout(layout)

def toprightfill(self):
    layout = QtGui.QVBoxLayout(self)
    model = QtSql.QSqlRelationalTableModel()
    model.setTable("ProductType")
    model.select()
    model.setHeaderData(0, QtCore.Qt.Horizontal, "Product Type ID")
    model.setHeaderData(1, QtCore.Qt.Horizontal, "Product Type")
    edit = QtSql.QSqlTableModel.OnFieldChange
    model.setEditStrategy(edit)
    view = QtGui.QTableView()
    view.setModel(model)
    view.setSelectionMode(self.mode)
    layout.addWidget(view)
    self.topright.setLayout(layout)


def connectDb(self):
    name = 'PostOffice.db'
    initDb.setup_database(name)
    db = QtSql.QSqlDatabase.addDatabase('QSQLITE')
    db.setDatabaseName(name)
    if not db.open():
        print("Cannot Connect")
        return False

Answer 1

问题是，如果您使用OnManualSubmit编辑策略按下按钮以编辑更改，则需要确保通过调用model.select()函数重新填充表格，否则程序将使用您的旧模型，直到你重新启动程序

更新外键时pyqt关系表不更新

1 个答案: