Python 如何将动态数据添加到 QML 表
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How to Add Dynamic Data to a QML Table
提问by Siecje
I'm trying to add rows to a table from Python. I'm using a TableView described with QML.
我正在尝试从 Python 向表中添加行。我正在使用 QML 描述的 TableView。
I can't figure out how to add a model to the table, unless the model is also in QML. But I can't figure out how to add values to the model.
我不知道如何将模型添加到表中，除非模型也在 QML 中。但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_())
users.qml
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
}
}
Edit
编辑
tableModel.append({'author': 'one', 'title': 'two'})
builtins.TypeError: unable to convert argument 0 of
QAbstractListModel.append from 'dict' to 'QQmlV4Function*'
采纳答案by Ford O.
Since nobody answered the question yet I will suggest you to use a workaround: Create a javascript function in qml with two arguments and add elements into to table right from QML file.
由于还没有人回答这个问题，我建议您使用一种解决方法：在 qml 中创建一个带有两个参数的 javascript 函数，然后直接从 QML 文件将元素添加到表中。
(Obviously you have to call the function from python first, but thats a piece of cake...)
（显然你必须先从 python 调用函数，但那是小菜一碟......）
P.S. If you wanna show example let me know in comment :]
PS如果你想展示例子，请在评论中告诉我：]
EDIT: code added
编辑：添加了代码
import QtQuick 2.3
import MyApplication 1.0
QPythonBinding{
id: binding
signal addElement(string param1, string param2)
onAddElement: {
myModel.append({"key1" : param1, "key2" : param2})
}
}
now python code
现在python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_()
