Question

我有QTreeView QSortFilterProxyModel。当我单击视图的任何项目时，将从单击的行打印索引。在设置过滤器之前和之后，它会打印相同的索引。

我需要removeRow()这个，但是当我输入索引时，它会从列表中删除不正确的项目：/

如何删除正确的选定行？

示例：

未排序

 ITEM 1
 ITEM 2 -> Click: Print ITEM2 and this is removed
 ITEM 3
 ITEM 4

排序

ITEM 2
ITEM 4 -> Click: Print ITEM2 and ITEM2 is removed :/

init
    self.menuIndex = None

    self.mModelMenu = QtGui.QStandardItemModel(0, 4, self)
    self.mModelMenu.setHeaderData(0, QtCore.Qt.Horizontal, "Id")
    self.mModelMenu.setHeaderData(1, QtCore.Qt.Horizontal, "Descripcion")
    self.mModelMenu.setHeaderData(2, QtCore.Qt.Horizontal, "Categoria")
    self.mModelMenu.setHeaderData(3, QtCore.Qt.Horizontal, "Cantidad")

    self.mProxyModelMenu = QtGui.QSortFilterProxyModel()
    self.mProxyModelMenu.setDynamicSortFilter(True)
    self.mProxyModelMenu.setSourceModel(self.mModelMenu)

    self.mTreeView = QtGui.QTreeView()
    self.mTreeView.setRootIsDecorated(False)
    self.mTreeView.setAlternatingRowColors(True)
    self.mTreeView.setModel(self.mProxyModelMenu)
    self.mTreeView.setSortingEnabled(True)
    self.mTreeView.sortByColumn(0, QtCore.Qt.AscendingOrder)
    self.mTreeView.resizeColumnToContents(0)
    self.mTreeView.clicked.connect(self.getIndex)

    mPushButton1 = QtGui.QPushButton("Borrar")
    mPushButton1.clicked.connect(self.newInMenu)

def getIndex()
    print(index.row())
    self.menuIndex = index.data(index.row())
    print(index.data(index.row()))
    # print(index.data(QtCore.Qt.DisplayRole))

def removeFromMenu(self):
    toRemove = self.menuIndex
    self.mModelMenu.removeRow(0) #this delete the last row, but i need delete current selected row

Answer 1

使用代理模型的最简单方法是避免使用原始模型并尽可能使用QSortFilterProxyModel方法。

E.g。只需在代理模型上调用removeRow：

def removeFromMenu(self)
    selIndexes = self.mTreeView.selectedIndexes()
    if len(selIndexes):
        first = selIndexes[0]
        self.mProxyModelMenu.removeRow(first.row(), first.parent())

应该这样做。

Answer 2

使用QSortFilterProxyModel时，您有两种类型的索引：代理索引（您在视图中看到的顺序）和原始模型的源索引（QStandardItemModel中的顺序）

该视图将为您提供代理索引，您可以使用mapToSource返回源索引，如下所示：

#get first selected index
proxy_index = self.mTreeView.selectedIndexes()[0] 

#convert 
source_index=self.mProxyModelMenu.mapToSource(proxy_index)

#delete row in source model
self.mModelMenu.removeRow(source_index.row())

如何从QSortFilterProxyModel PyQt获取正确的数据

2 个答案: