PyQt中的String String列：QTableWidget基于非字符串值

Question

我正在尝试对数字（float＆amp; int）进行排序，这些数字被格式化为添加$和逗号等，并在添加到QTableWidgetItem之前转换为QString。但是对这些列进行排序不起作用，因为排序基于字符串数据。有没有办法将数据显示为String，但基于底层整数/浮点值对其进行排序。我正在做如下的事情：

self.constituentsTableWidget.setSortingEnabled(False)
for i in xrange(p.getNumInstruments()):
   employee = p.getEmployee(i)

   item = QTableWidgetItem(QString(unicode('{}'.format(re.sub("(\d)(?=(\d{3})+(?!\d))", r"\1,", "%.2f" % employee.WorkDays)))))
   self.constituentsTableWidget.setItem(i, cols['WorkDays'], item)

self.constituentsTableWidget.setSortingEnabled(True) 

非常感谢任何帮助。

由于 拉胡

Answer 1

我只是这样做，继承QtGui.QTableWidgetItem并创建自己的。接下来，覆盖方法bool QTableWidgetItem.lt (self, QTableWidgetItem other)以比较您自己的情况;

示例

import re
import sys
import random
from PyQt4 import QtCore, QtGui

class QCustomTableWidgetItem (QtGui.QTableWidgetItem):
    def __init__ (self, value):
        super(QCustomTableWidgetItem, self).__init__(QtCore.QString('%.2f $' % value))

    def __lt__ (self, other):
        if (isinstance(other, QCustomTableWidgetItem)):
            selfDataValue  = float(re.sub(r'[ $]', '', str(self.data(QtCore.Qt.EditRole).toString())))
            otherDataValue = float(re.sub(r'[ $]', '', str(other.data(QtCore.Qt.EditRole).toString())))
            return selfDataValue < otherDataValue
        else:
            return QtGui.QTableWidgetItem.__lt__(self, other)

class QCustomTableWidget (QtGui.QTableWidget):
    def __init__ (self, parent = None):
        super(QCustomTableWidget, self).__init__(parent)
        self.setColumnCount(2)
        self.setRowCount(5)
        for row in range(self.rowCount()):
            self.setItem(row, 0, QCustomTableWidgetItem(random.random() * 1e4))
            self.setItem(row, 1, QtGui.QTableWidgetItem(QtCore.QString(65 + row)))
        self.setSortingEnabled(True)

myQApplication = QtGui.QApplication([])
myQCustomTableWidget = QCustomTableWidget()
myQCustomTableWidget.show()
sys.exit(myQApplication.exec_())

希望是有帮助的;