在 PyQt 中从 SQLite 数据库填充组合框

Question

我试图从 SQLite 数据库填充组合框，但没有提取任何内容。

我的代码

import sys
from PyQt6 import QtWidgets
from PyQt6.QtSql import QSqlTableModel
import sqlite3
from test_rt_sql import Ui_MainWindow

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
    super().__init__()

    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)

    self.model = QSqlTableModel()
    self.model.setTable('user')
    self.model.select()
    self.ui.comboBox.setModel(self.model)
    self.ui.comboBox.currentIndexChanged.connect(self.comboBox_val)

    self.show()

def comboBox_val(self):
    conn = sqlite3.connect('C:/sqlite/test.db')
    c = conn.cursor()
    c.execute('SELECT name FROM user')
    rows = c.fetchall()

    for row in rows:
        self.ui.comboBox.addItems(row)

    conn.close()


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec())

我尝试在

addItems

中向其返回列表，但出现错误

self.ui.comboBox.addItems(self.comboBox_val)
TypeError: addItems(self, texts: Iterable[Optional[str]]): argument 1 has unexpected type 'method'

据我了解，它不喜欢论点

addItems 

，即没有具体指数据，而是指方法。

返回列表的代码：

from PyQt6 import QtWidgets
from PyQt6.QtSql import QSqlTableModel
import sqlite3
from test_rt_sql import Ui_MainWindow

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
        super().__init__()

        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        self.model = QSqlTableModel()
        self.model.setTable('user')
        self.model.select()
        self.ui.comboBox.setModel(self.model)
        self.ui.comboBox.addItems(self.comboBox_val)

        self.show()

    def comboBox_val(self):
        global data1
        conn = sqlite3.connect('C:/sqlite/test.db')
        c = conn.cursor()
        c.execute('SELECT name FROM user')
        data1 = []

        for row in c.fetchall():
            data1.append(str(row))

        return data1



if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec()

数据库肯定连接好了，数据给定了。我是这样查的。

import sqlite3

def comboBox_val():
conn = sqlite3.connect('C:/sqlite/test.db')
c = conn.cursor()
c.execute('SELECT name FROM user')
rows = c.fetchall()

for row in rows:
    print(row)

comboBox_val()

Answer 1

我一开始走错地方了。

连接到基础

create_connection

，然后已经

QSqlTableModel

，查询本身在

setQuery

中指定

import sys
from PyQt6 import QtWidgets
from PyQt6.QtSql import QSqlTableModel, QSqlDatabase
from test_rt_sql import Ui_MainWindow

def create_connection():
    db = QSqlDatabase.addDatabase("QSQLITE")
    db.setDatabaseName("C:/sqlite/test.db")
    return True

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def __init__(self):
    super().__init__()

    self.ui = Ui_MainWindow()
    self.ui.setupUi(self)

    create_connection()

    self.model = QSqlTableModel()
    self.model.setTable('user')
    self.model.setQuery('SELECT name FROM user')
    self.model.select()
    self.ui.comboBox.setModel(self.model)

    self.show()


if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec())