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Thread: How can I get data from the hidden column in a QTreeView?

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    Default How can I get data from the hidden column in a QTreeView?

    Hi, everyone! I have a qtreeview, that displays some information from the sqlite database. When I click on the item in the tree, I go to the DB and trying to find details about selected item... The trouble is that i need to search information in the DB by ID, not by displayed name.. So, I decided to draw additional column in the tree that will hold the ID. When I click on the row, I take element's ID with help of self.ui.treeView.selectedIndexes()[1] (0 column is a name)
    But. When I am trying to hide column using hideColumn(), i get an "index is out of bounds" error... In the description of selectedIndexes() I read that "This convenience function returns a list of all selected and non-hidden item indexes in the view."... So, is there another way to tackle with my problem?

    Thanks!

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    Default Re: How can I get data from the hidden column in a QTreeView?

    You take the index for the first column and then ask the model for the index of the second column, using the parent index and row of the index you have.

    Cheers,
    _

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    Default Re: How can I get data from the hidden column in a QTreeView?

    Alternatively, you can store the ID as Qt::UserRole data for the model index: QAbstractItemModel::setData(). When you get notified of the selected index, you ask it for the UserRole data, which is returned as a QVariant.

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    Default Re: How can I get data from the hidden column in a QTreeView?

    Oh, I tried to do what you described.. It works only while my column is visible...

    hm... I'll try it, thanks!

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    Default Re: How can I get data from the hidden column in a QTreeView?

    Are you using a proxy model to convert the DB result into something to display in the tree?

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    Default Re: How can I get data from the hidden column in a QTreeView?

    I am creating QStandardItem and recursively appending rows..

    child_node = QtGui.QStandardItem("ITEM TEXT")
    root.appendRow(child_node)

    "ITEM TEXT" - is getting directly from sqlite...for each iteration...

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    Default Re: How can I get data from the hidden column in a QTreeView?

    Well then it is easy - when you create the QStandardItem, just call
    Qt Code:
    1. child_node.setData( QVariant( ID ), Qt::UserRole )
    To copy to clipboard, switch view to plain text mode 
    When you get the selected item, then it is just
    Qt Code:
    1. ID = selected_node.data( Qt::UserRole )
    To copy to clipboard, switch view to plain text mode 
    (or whatever the appropriate syntax is - I'm not a python programmer).

  8. The following user says thank you to d_stranz for this useful post:

    serj (4th April 2015)

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    Default Re: How can I get data from the hidden column in a QTreeView?

    It works! Thanks! This is exactly what I need..

    child_node.setData(QtCore.QVariant(str(chld["ID"]))) #setting data

    selected_id = str(index.model().itemFromIndex(index).data().toSt ring()) #getting data

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