如何将动态数据添加到 QML 表

Question

我正在尝试从 Python 向表中添加行。我正在使用用QML描述的TableView。

我不知道如何将模型添加到表中，除非模型也在 QML 中。但是我不知道如何向模型添加值。

import sys
from PyQt5.QtCore import QAbstractTableModel, QObject, QUrl
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtQuick import QQuickView
from PyQt5.QtWidgets import QApplication

myApp = QApplication(sys.argv)
engine = QQmlApplicationEngine()
context = engine.rootContext()
context.setContextProperty("main", engine)
engine.load('users.qml')
mainWin = engine.rootObjects()[0]
# Add items
userTable = mainWin.findChild(QObject, "userTable")
tableModel = mainWin.findChild(QObject, "libraryModel")
tableModel.setData(tableModel.index(0), "one")
tableModel.setData(tableModel.index(1), "one")
mainWin.show()
sys.exit(myApp.exec_())

用户.qml

import QtQuick 2.3
import QtQuick.Controls 1.2
ApplicationWindow {
    ListModel {
        id: libraryModel
        objectName: "libraryModel"
        ListElement {
            title: "A Masterpiece"
            author: "Gabriel"
        }
        ListElement {
            title: "Brilliance"
            author: "Jens"
        }
        ListElement {
            title: "Outstanding"
            author: "Frederik"
        }
    }
    TableView {
        objectName: "userTable"
        anchors.fill: parent
        TableViewColumn {
            role: "title"
            title: "Title"
        }
        TableViewColumn {
            role: "author"
            title: "Author"
        }
        model: libraryModel
    }
}

编辑

tableModel.append({'author': 'one', 'title': 'two'})
builtins.TypeError: unable to convert argument 0 of 
QAbstractListModel.append from 'dict' to 'QQmlV4Function*'

Answer 1

由于还没有人回答这个问题，我建议您使用解决方法：在 qml 中创建一个带有两个参数的 javascript 函数，并直接从 QML 文件将元素添加到表中。

（显然你必须首先从python调用函数，但这是小菜一碟......

附言如果您想展示示例，请在评论中告诉我：]

编辑：添加代码

import QtQuick 2.3
import MyApplication 1.0
QPythonBinding{
id: binding
signal addElement(string param1, string param2)
    onAddElement: {
        myModel.append({"key1" : param1, "key2" : param2})
    }
}

现在蟒蛇代码

class QPythonBinding(QQuickItem):
    def __init__(self, parent=None):
        super(QPythonBinding, self).__init__(parent)
    addElement = pyqtSignal(str, str)   #you call it like this  - addElement.emit("name", "value")

if __name__ == '__main__':
    import sys
    app = QGuiApplication(sys.argv)
    qmlRegisterType(QPythonBinding, "MyApplication", 1, 0, "QPythonBinding")
    view = QQuickView()
    view.show()
    app.exec_()