JSON 数据未出现在 QTableModel 中

Question

我使用 qml 创建了一个 table，我想在 table 中添加 JSON 数据。问题是我只能看到最后一行 json 数据，例如如果我添加了一个新条目，那么我只能看到该条目，而看不到之前的条目。

main.qml

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtQuick.Controls 1.4 as OldControls
import QtQml.Models 2.15
import TbModel 1.0


OldControls.ApplicationWindow {
id: window
visible: true
width: 1900
height: 600

OldControls.TableView
{
    id: idtable
    width: parent.width
    height: parent.height
    model: TbModel{ }
    OldControls.TableViewColumn {
        role: "customer_id"
        title: "customer_id"
    }
    OldControls.TableViewColumn {
        role: "customer_code"
        title: "customer_code"
    }
    OldControls.TableViewColumn {
        role: "customer_name"
        title: "customer_name"
    }

    OldControls.TableViewColumn {
        role: "contact"
        title: "contact"
    }

    OldControls.TableViewColumn {
        role: "address"
        title: "address"
    }
}
}

Table.py

from PySide2.QtCore import QAbstractListModel, QModelIndex, QObject, Qt, Slot
import requests
import json

class TbModel(QAbstractListModel):
    def __init__(self, parent: QObject = None) -> None:
        super().__init__(parent)
        self.headers = ["customer_id", "customer_code", "customer_name", "contact", "address"] 
        r = requests.get("http://192.168.10.5:8085/api/customer") # api I created 
        x = r.json()
        for i in x:
            self.rows = [
               (i["customer_id"], i["customer_code"], i["customer_name"], i["contact"], 
   i["address"]),
               (i["customer_id"], i["customer_code"], i["customer_name"], i["contact"], 
   i["address"])

    ]

def rowCount(self, parent=QModelIndex()):
    return len(self.rows)

def data(self, index, role=Qt.DisplayRole):
    row = index.row()
    if 0 <= row < self.rowCount():
        if role in self.roleNames():
            name_role = self.roleNames()[role].decode()
            col = self.headers.index(name_role)
            return self.rows[row][col]

def headerData(self, section, orientation, role):
    if role == Qt.DisplayRole and 0 <= section < len(self.headers):
        return self.headers[section]

def roleNames(self):
    roles = {}
    for i, header in enumerate(self.headers):
        roles[Qt.UserRole + i + 1] = header.encode()
    return roles

@Slot(result="QVariantList")
def roleNameArray(self):
    return self.headers

main.py

import os
import sys
from PySide2 import QtCore, QtGui, QtSql, QtQml
from Table import TbModel
from PySide2.QtWidgets import QApplication
from PySide2.QtQml import QQmlApplicationEngine

if __name__ == "__main__":
    app = QApplication(sys.argv)
    engine = QQmlApplicationEngine()
    QtQml.qmlRegisterType(TbModel, "TbModel", 1, 0, "TbModel")

    engine.load(os.path.join(os.path.dirname(__file__), "main.qml"))

    if not engine.rootObjects():
        sys.exit(-1)
    sys.exit(app.exec_())

我不知道为什么它只显示最近的结果，如果它显示第一个结果我能理解（这很可能表明我需要使用循环）。任何帮助将不胜感激。

Answer 1

回复有点晚。我想通了这个问题，基本上我是在循环的每次迭代中覆盖 self.rows 的内容。我需要追加而不是替换。

JSON 数据未出现在 QTableModel 中

JSON data not appearing in QTableModel

python

json

qml