3

我希望能够在使用 a 填充时设置itemDataa 。但是，我只能从模型的方法中返回一个字符串。comboboxQAbstractTableModeldata

通常，当不使用模型时，可以这样执行：

# Set text and data
combobox.addItem('Some text', 'some item data')

# Retrieve data from selected
item_data = combobox.itemData(combobox.currentIndex())

如何做到这一点，但使用QAbstractTableModel?

我有一个combobox，我将模型设置为：

model = ProjectTableModel(projects)
combobox.setModel(model)

我的模型：

class ProjectTableModel(QtCore.QAbstractTableModel):

    def __init__(self, projects=[], parent=None):
        QtCore.QAbstractTableModel.__init__(self, parent)
        self._projects = projects

    def rowCount(self, parent):
        return len(self._projects)

    def columnCount(self, parent):
        return 2

    def data(self, index, role):
        row = index.row()
        column = index.column()

        if role == QtCore.Qt.DisplayRole and column == 0:
            project = self._projects[row]
            name = project.name()
            id = project.id()  # <----- how to add this as itemData?
            return name
4

1 回答 1

2

AQComboBox 总是使用模型来存储其数据。如果您不自己设置模型，它将创建自己的QStandardItemModel. 诸如addItem和itemData简单地使用已设置的任何底层模型存储和检索值的方法。默认情况下，组合框使用Qt.UserRole将项目数据存储在模型中。所以你的模型只需要做这样的事情：

def data(self, index, role):
    row = index.row()
    column = index.column()

    if role == QtCore.Qt.DisplayRole and column == 0:
        project = self._projects[row]
        name = project.name()
        return name
    elif role == QtCore.Qt.UserRole and column == 0:
        project = self._projects[row]
        id = project.id()
        return id

def setData(self, index, value, role):
    row = index.row()
    column = index.column()

    if role == QtCore.Qt.UserData and column == 0:
        project = self._projects[row]
        project.setId(value) # or whatever
于 2017-10-07T23:01:27.977 回答