我写了一个将数据输入到sql表中的函数。理论上，按我的理解，这个数据应该显示在TableView中，但是他们没有显示，尽管数据被输入到表中。我尝试了reset(), update() 方法来更新表，没有用，反正表是空的。应用重启后显示内容
class NewTransaction(QDialog):
def __init__(self):
super(NewTransaction, self).__init__()
self.ui = Ui_Dialog()
self.ui.setupUi(self)
self.db = DataBase()
self.et = ExpensesTracker()
self.ui.button_new_transaction.clicked.connect(self.add_new_transaction)
def add_new_transaction(self):
self.index = self.ui.cb_category.currentIndex()
self.item = self.ui.cb_category.itemText(self.index)
self.data = self.ui.data.text()
self.ld = self.ui.le_description.text()
self.lb = self.ui.le_balance.text()
self.status_index = self.ui.comboBox_2.currentIndex()
self.status = self.ui.comboBox_2.itemText(self.status_index)
self.et.rec.setValue('category', self.item)
self.et.rec.setValue('date', self.data)
self.et.rec.setValue('descriptions', self.ld)
self.et.rec.setValue('balance', self.lb)
self.et.rec.setValue('status', self.status)
self.et.transactions.insertRecord(-1, self.et.rec)
self.et.ui.tableView.reset()
self.ui.btn_add.clicked.connect(self.add_new_transaction)
self.transactions = QSqlTableModel()
self.transactions.setTable('transactions')
self.transactions.editStrategy()
self.transactions.select()
self.rec = connect_db('transactions.db').record('transactions')
self.ui.tableView.setModel(self.transactions)
def add_new_transaction(self):
self.other_window = NewTransaction()
self.other_window.exec_()
def connect_db(db_name):
con = QSqlDatabase.addDatabase('QSQLITE')
con.setDatabaseName(db_name)
if not con.open():
return False
return con
if not connect_db('transactions.db'):
sys.exit(-1)