我在QTableview上使用QDateTimeEdit作为委托来显示开始日期和结束日期。 当我尝试填充从数据库收到的数据时,QDateTimeEdit委托不会显示它。
这是我的代码:
班级DateDelegate
:
class DateDelegate(QtGui.QItemDelegate):
def __init__(self, parent):
QtGui.QItemDelegate.__init__(self, parent)
def createEditor(self, parent, option, index):
self.dateEdit = QtGui.QDateTimeEdit(parent)
self.dateEdit.setCalendarPopup(True)
self.dateEdit.setMinimumDate(QtCore.QDate(2014, 03, 01))
self.dateEdit.setDisplayFormat(_translate("Form", "dd/mm/yyyy", None))
return self.dateEdit
def setModelData(self, editor, model, index):
value = self.dateEdit.dateTime().toPyDateTime()
strDate = value.strftime('%d/%m/%Y')
model.setData(index, strDate, QtCore.Qt.EditRole)
班级AssetTableModel
:
class AssetTableModel(QtCore.QAbstractTableModel):
def __init__(self, assets = [], headers = [], parent = None):
QtCore.QAbstractTableModel.__init__(self, parent)
self.__assets = assets
self.__headers = headers
def rowCount(self, parent):
return len(self.__assets)
def columnCount(self, parent):
return len(self.__assets[0])
def flags(self, index):
return QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsEditable
def data(self, index, role):
row = index.row()
column = index.column()
if role == QtCore.Qt.EditRole:
return self.__assets[row][column]
if role == QtCore.Qt.DisplayRole:
print self.__assets[row][column]
return self.__assets[row][column]
def setData(self, index, value, role = QtCore.Qt.EditRole):
if role == QtCore.Qt.EditRole:
row = index.row()
column = index.column()
self.__assets[row][column] = value
self.dataChanged.emit(index, index)
return True
return False
def headerData(self, section, orientation, role):
if role == QtCore.Qt.DisplayRole:
if orientation == QtCore.Qt.Horizontal:
if section < len(self.__headers):
return self.__headers[section]
else:
return "not implimented"
else:
return "verticle not implimented"
def insertRows(self, position, rows, parent = QtCore.QModelIndex()):
self.beginInsertRows( parent, position, position + rows - 1 )
for i in range(rows):
defaultValues = [ "" for c in range( self.columnCount( None ) ) ]
self.__assets.insert( position, defaultValues )
self.endInsertRows()
return True
班级AssetWidget
:
class AssetWidget(QtGui.QDialog):
def __init__(self, parent = None):
super(AssetWidget, self).__init__(parent)
uic.loadUi(uipath+'/AssetTable.ui', self)
# DB call here
self.loadAssetData()
# db call ends here
self.model = None
self.fillCombo(self.assetType)
self.cellDelegate = CellDelegate(self)
for i in range(10):
self.assetTV.setItemDelegateForColumn(i, self.cellDelegate)
self.sDateDelegate = DateDelegate(self)
self.assetTV.setItemDelegateForColumn(10, self.sDateDelegate )
self.assetTV.setItemDelegateForColumn(11, self.sDateDelegate)
self.connect(self.assettypeCB, QtCore.SIGNAL("currentIndexChanged(int)"), self.loadAssets )
self.connect(self.closeBTN , QtCore.SIGNAL("clicked()"), self.close )
self.connect(self.addRowBTN, QtCore.SIGNAL("clicked()"), self.addRow )
self.connect(self.assetTV, QtCore.SIGNAL("doubleClicked(QModelIndex)"), self.tableEdited )
self.show()
答案 0 :(得分:2)
我认为你错过了ItemDelegate中的setEditorData()
方法。
从您附带的源代码中,我假设您将日期存储为字符串?在我看来,最好使用QDateTime对象来存储您的日期/时间。如果这样做,则不需要ItemDelegate来提供适当的编辑器,因为Qt知道它需要为这种数据类型提供哪个编辑器。 (见Qt Documentation - Standard Editing Widgets。
但是,如果您仍想将日期存储为字符串,请参阅下面的示例程序,了解如何使用委托。
from PyQt4 import QtCore
from PyQt4 import QtGui
import sys
class myModel(QtCore.QAbstractTableModel):
def __init__(self, parent):
QtCore.QAbstractTableModel.__init__(self, parent)
self.lst = []
#populate with a few dummy dates
#store dates as str values
dateTime = QtCore.QDateTime.currentDateTime()
for i in range(10):
strDate = dateTime.toString("dd/mm/yyyy")
self.lst.append([strDate])
dateTime = dateTime.addDays(1)
def rowCount(self, parent = QtCore.QModelIndex()):
return len(self.lst)
def columnCount(self, parent = QtCore.QModelIndex()):
return 1
def data(self, index, role = QtCore.Qt.DisplayRole):
row = index.row()
col = index.column()
if role == QtCore.Qt.DisplayRole:
return self.lst[row][col]
if role == QtCore.Qt.EditRole:
return self.lst[row][col]
def setData(self, index, value, role = QtCore.Qt.EditRole):
row = index.row()
col = index.column()
self.lst[row][col] = value
def flags(self, index):
return (QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable)
class DateDelegate(QtGui.QItemDelegate):
def __init__(self, parent):
QtGui.QItemDelegate.__init__(self, parent)
def createEditor(self, parent, option, index):
dateTimeEdit = QtGui.QDateTimeEdit(parent) #create new editor
#set properties of editor
dateTimeEdit.setDisplayFormat("dd/mm/yyyy")
dateTimeEdit.setCalendarPopup(True)
return dateTimeEdit
def setModelData(self, editor, model, index):
value = editor.dateTime().toString("dd/mm/yyyy")
model.setData(index, value)
def setEditorData(self, editor, index):
value = index.model().data(index, QtCore.Qt.EditRole)
qdate = QtCore.QDateTime().fromString(value, "dd/mm/yyyy")
editor.setDateTime(qdate)
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
table = QtGui.QTableView()
data = myModel(table)
table.setModel(data)
d = DateDelegate(table)
table.setItemDelegateForColumn(0, d)
table.resize(800, 600)
table.show()
sys.exit(app.exec_())