CODEWITHSUNDEEP
qtpython-3.xpyqtqt4.8
Mehraban
Mehraban

Reputation: 3334

Unable to use QFileSystemModel along custom QSortFilterProxy

I'm new to qt and trying to hide some directories in a QTreeView. I'm trying to hide some folders based on their names using a custom QSortFilterProxy named CacheFilterProxy.

I setup the tree view this way:

fileModel = QtGui.QFileSystemModel()
rootIndex = fileModel.setRootPath(rootDir)
fileModel.setFilter(QtCore.QDir.Dirs | QtCore.QDir.NoDotAndDotDot)
fileModel.setNameFilters([patternString])
model = CacheFilterProxy()
model.setSourceModel(fileModel)
self.fileTreeView.setModel(model)
self.fileTreeView.setRootIndex(model.mapFromSource(rootIndex))
self.fileTreeView.clicked.connect(self.selectedFileChanged)

and then, in self.selectedFileChanged I try to extract fileName and filePath of currently selected item in tree view. Name of the file will be easily retrieved, but retrieving file path causes the whole program to stop working and then quit.

def selectedFileChanged(self, index):
    fileModel = self.fileTreeView.model().sourceModel()
    indexItem = self.fileTreeView.model().index(index.row(), 0, index.parent())
    # this works normal
    fileName = fileModel.fileName(indexItem)
    # this breaks the entire program
    filePath = fileModel.filePath(indexItem)

Upvotes: 0

Views: 78

Answers (1)

titusjan
titusjan

Reputation: 5556

This seems wrong. Your fileModelis the source but I think index is a proxy index. I think you must map it to the source model before using it in the fileModel.

def selectedFileChanged(self, proxyIndex):
    sourceModel = self.fileTreeView.model().sourceModel()
    sourceIndex = self.fileTreeView.model().mapToSource(proxyIndex)
    sourceIndexCol0 = sourceModel.index(sourceIndex.row(), 0, sourceIndex.parent())

    # this works normal
    fileName = sourceModel.fileName(sourceIndexCol0)
    # this breaks the entire program
    filePath = sourceModel.filePath(sourceIndexCol0)

Note that I renamed indexItem to sourceIndexCol0 as it is an index and not an item. It was a bit confusing at first glance.

I could not test the code above. If it doesn't work, verify that the indexes are valid before using them and check their model class.

Upvotes: 1

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