更改Model数据后,我无法更新QTableView的布局。
我尝试使用dataChanged.emit(index,index),layoutChanged.emit()以及最后一次使用reset()的方法。没有一个起作用。
我的代码:
class SettingsDialog(QDialog, settings_design.Ui_settingsDialog):
def __init__(self):
super(self.__class__, self).__init__()
self.setupUi(self)
self.weekdayTable = QTableView(self.weekdayPage)
weekdayModel = self.loadMeetingData(self.meetingsData['weekdayList'])
#weekdayModel.dataChanged.connect(self.updateTable)
self.weekdayTable.setModel(weekdayModel)
def updateTable(self):
self.weekdayTable.repaint()
class MeetingsModel(QStandardItemModel):
def __init__(self, data, columns):
QStandardItemModel.__init__(self, data, columns)
with open('meetings.config.json') as f:
self.meetingsData = json.load(f)
def setData(self, index, value, other):
self.meetingsData['weekdayList'][int(index.row())][index.column()] = value
with open('meetings.config.json', 'w+') as f:
f.write(json.dumps(self.meetingsData))
self.dataChanged.emit(index, index)
# self.layoutChanged.emit(index, index)
return True
我究竟做错了什么?
最佳答案
我终于通过其他方法解决了这个问题。
旧方法(优雅的方法):
我扩展了QStandardModelItem
的setData
方法,该函数具有将修改后的数据保存到文件中的功能。
新的方法:
当dataChanged
发出QStandarItemModel
信号时,连接的插槽(writeChangedData
)会将更改后的数据写入文件。换句话说,我将功能从setData
移到了插槽。
代码:
class SettingsDialog(QDialog, settings_design.Ui_settingsDialog):
def __init__(self):
super(self.__class__, self).__init__()
self.setupUi(self)
self.weekdayTable = QTableView(self.weekdayPage)
self.weekdayModel = self.loadMeetingData(self.meetingsData['weekdayList'])
self.weekdayModel.dataChanged.connect(self.writeModifiedData)
self.weekdayTable.setModel(self.weekdayModel)
def writeModifiedData(self, topLeft, bottomRight):
self.weekdayModel['weekdayList'][int(topLeft.row())][topLeft.column()] = value
with open('meetings.config.json', 'w+') as f:
f.write(json.dumps(self.weekdayModel))
f.close()