I am trying to add new rows to QSqlRelationalModel which is represented in QTableView.
I have set proper QSqlRelationalDelegate and proper QSqlRelations in the model. Displaying existing data from the database works fine. Columns with related data change to Comboboxes and I can choose options from the related tables.
However, when I try to create a new record by adding a row to the model, Comboboxes allow me to choose the proper value from the dropdown list, but after choosing it, the value changes to the ID of the related record as if no relational delegate was set.
main.py:
import sys
from PyQt6 import QtCore, QtWidgets
from PyQt6.QtCore import QModelIndex, Qt
from PyQt6.QtSql import QSqlDatabase, QSqlTableModel, QSqlRelationalTableModel, QSqlRelation, QSqlQuery, \
QSqlRelationalDelegate
from PyQt6.QtWidgets import QPushButton
class Ui_main(object):
def setupUi(self, main):
main.setObjectName("main")
main.resize(781, 652)
self.verticalLayoutWidget = QtWidgets.QWidget(main)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(10, 10, 761, 631))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
# Replace values with your database configurations
database = QSqlDatabase.addDatabase('QSQLITE')
database.setDatabaseName('accounting.db')
database.open()
button_add = QPushButton("AddRow")
button_add.clicked.connect(self.addRow)
self.verticalLayout.addWidget(button_add)
self.tableView = QtWidgets.QTableView(self.verticalLayoutWidget)
self.tableView.setObjectName("tableView")
self.tableView.verticalHeader().setVisible(False)
self.verticalLayout.addWidget(self.tableView)
self.table_model = QSqlRelationalTableModel(main, database)
self.table_model.setJoinMode(QSqlRelationalTableModel.JoinMode.LeftJoin)
self.table_model.setEditStrategy(QSqlTableModel.EditStrategy.OnFieldChange)
self.table_model.setTable('book_of_accounts')
self.table_model.setRelation(4, QSqlRelation('account_type', 'id', 'name'))
self.table_model.setRelation(7, QSqlRelation('subconto1', 'id', 'name'))
self.table_model.setRelation(8, QSqlRelation('subconto2', 'id', 'name'))
self.table_model.setRelation(9, QSqlRelation('subconto3', 'id', 'name'))
self.table_model.select()
self.tableView.setModel(self.table_model)
self.tableView.setItemDelegate(QSqlRelationalDelegate(self.tableView))
self.tableView.hideColumn(0)
QtCore.QMetaObject.connectSlotsByName(main)
def addRow(self):
self.tableView.sortByColumn(-1, Qt.SortOrder.AscendingOrder)
count = self.table_model.rowCount(QModelIndex())
self.table_model.insertRows(count, 1)
self.tableView.scrollToBottom()
self.tableView.updateGeometry()
self.tableView.selectRow(count)
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
main_window = QtWidgets.QWidget()
window = Ui_main()
window.setupUi(main_window)
main_window.show()
sys.exit(app.exec())
Database:
BEGIN TRANSACTION;
CREATE TABLE IF NOT EXISTS "book_of_accounts" (
"id" INTEGER PRIMARY KEY AUTOINCREMENT,
"code" varchar(4) NOT NULL,
"belongs_to_id" bigint,
"name" varchar(1024) NOT NULL,
"account_type_id" bigint NOT NULL,
"quantitative" boolean NOT NULL,
"monetary" boolean NOT NULL,
"subconto_1_id" bigint,
"subconto_2_id" bigint,
"subconto_3_id" bigint,
CONSTRAINT "book_of_accounts_subconoto_3_id_fkey" FOREIGN KEY("subconto_3_id") REFERENCES "subconto3" on delete cascade,
CONSTRAINT "book_of_accounts_subconoto_2_id_fkey" FOREIGN KEY("subconto_2_id") REFERENCES "subconto2" on delete cascade,
CONSTRAINT "book_of_accounts_subconoto_1_id_fkey" FOREIGN KEY("subconto_1_id") REFERENCES "subconto1" on delete cascade,
CONSTRAINT "book_of_accounts_account_type_id_fkey" FOREIGN KEY("account_type_id") REFERENCES "account_type",
CONSTRAINT "book_of_accounts_belongs_to_id_fkey" FOREIGN KEY("belongs_to_id") REFERENCES "book_of_accounts"
);
CREATE TABLE IF NOT EXISTS "subconto3" (
"id" bigserial,
"name" varchar(1024) NOT NULL,
CONSTRAINT "subconto3_pkey" PRIMARY KEY("id")
);
CREATE TABLE IF NOT EXISTS "subconto2" (
"id" bigserial,
"name" varchar(1024) NOT NULL,
CONSTRAINT "subconto2_pkey" PRIMARY KEY("id")
);
CREATE TABLE IF NOT EXISTS "subconto1" (
"id" bigserial,
"name" varchar(1024) NOT NULL,
CONSTRAINT "subconto1_pkey" PRIMARY KEY("id")
);
CREATE TABLE IF NOT EXISTS "account_type" (
"id" bigserial,
"name" varchar(1024) NOT NULL,
CONSTRAINT "account_type_pkey" PRIMARY KEY("id")
);
INSERT INTO "subconto3" ("id","name") VALUES (1,'< Ничего >');
INSERT INTO "subconto3" ("id","name") VALUES (2,'Цены');
INSERT INTO "subconto3" ("id","name") VALUES (3,'Подразделения');
INSERT INTO "subconto2" ("id","name") VALUES (1,'< Ничего >');
INSERT INTO "subconto2" ("id","name") VALUES (2,'Места хранения');
INSERT INTO "subconto2" ("id","name") VALUES (3,'Статьи затрат');
INSERT INTO "subconto2" ("id","name") VALUES (4,'Договора');
INSERT INTO "subconto2" ("id","name") VALUES (5,'Виды налогооблагаемого дохода');
INSERT INTO "subconto2" ("id","name") VALUES (6,'Движение денежных средств');
INSERT INTO "subconto2" ("id","name") VALUES (7,'Виды выбытия');
INSERT INTO "subconto1" ("id","name") VALUES (1,'< Ничего >');
INSERT INTO "subconto1" ("id","name") VALUES (2,'Основные средства');
INSERT INTO "subconto1" ("id","name") VALUES (3,'Нематериальные активы');
INSERT INTO "subconto1" ("id","name") VALUES (4,'Товаро-материальные запасы');
INSERT INTO "subconto1" ("id","name") VALUES (5,'Статьи затрат');
INSERT INTO "subconto1" ("id","name") VALUES (6,'Расходы будущих периодов');
INSERT INTO "subconto1" ("id","name") VALUES (7,'Контрагенты');
INSERT INTO "subconto1" ("id","name") VALUES (8,'Сотрудники');
INSERT INTO "subconto1" ("id","name") VALUES (9,'Налоги и отчисления');
INSERT INTO "subconto1" ("id","name") VALUES (10,'Движение денежных средств');
INSERT INTO "subconto1" ("id","name") VALUES (11,'Расчетные счета наши');
INSERT INTO "subconto1" ("id","name") VALUES (12,'Контрагенты и Сотрудники');
INSERT INTO "account_type" ("id","name") VALUES (1,'Активный');
INSERT INTO "account_type" ("id","name") VALUES (2,'Забалансовый');
INSERT INTO "account_type" ("id","name") VALUES (3,'Контр. Активный');
INSERT INTO "account_type" ("id","name") VALUES (4,'Контр. Пассивный');
INSERT INTO "account_type" ("id","name") VALUES (5,'Пассивный');
INSERT INTO "account_type" ("id","name") VALUES (6,'Транзитный');
INSERT INTO "book_of_accounts" ("id","code","belongs_to_id","name","account_type_id","quantitative","monetary","subconto_1_id","subconto_2_id","subconto_3_id") VALUES (1,'0000',NULL,'Остатки',5,0,0,1,1,1);
INSERT INTO "book_of_accounts" ("id","code","belongs_to_id","name","account_type_id","quantitative","monetary","subconto_1_id","subconto_2_id","subconto_3_id") VALUES (2,'0100',NULL,'СЧЕТА УЧЕТА ОСНОВНЫХ СРЕДСТВ',3,0,0,2,2,1);
INSERT INTO "book_of_accounts" ("id","code","belongs_to_id","name","account_type_id","quantitative","monetary","subconto_1_id","subconto_2_id","subconto_3_id") VALUES (3,'0110',2,'Земля',3,0,0,2,2,1);
INSERT INTO "book_of_accounts" ("id","code","belongs_to_id","name","account_type_id","quantitative","monetary","subconto_1_id","subconto_2_id","subconto_3_id") VALUES (4,'0111',2,'Благоустройство земли',1,0,0,2,2,1);
INSERT INTO "book_of_accounts" ("id","code","belongs_to_id","name","account_type_id","quantitative","monetary","subconto_1_id","subconto_2_id","subconto_3_id") VALUES (5,'0112',2,'Благоустройство основных средств, полученных по договору долгосрочной аренды',1,0,0,2,2,1);
CREATE UNIQUE INDEX IF NOT EXISTS "bookofaccounts_code" ON "book_of_accounts" (
"code"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_belongs_to_id" ON "book_of_accounts" (
"belongs_to_id"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_name" ON "book_of_accounts" (
"name"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_account_type_id" ON "book_of_accounts" (
"account_type_id"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_subconoto_1_id" ON "book_of_accounts" (
"subconto_1_id"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_subconoto_2_id" ON "book_of_accounts" (
"subconto_2_id"
);
CREATE INDEX IF NOT EXISTS "bookofaccounts_subconoto_3_id" ON "book_of_accounts" (
"subconto_3_id"
);
CREATE INDEX IF NOT EXISTS "subconto3_name" ON "subconto3" (
"name"
);
CREATE INDEX IF NOT EXISTS "subconto2_name" ON "subconto2" (
"name"
);
CREATE INDEX IF NOT EXISTS "subconto1_name" ON "subconto1" (
"name"
);
CREATE INDEX IF NOT EXISTS "accounttype_name" ON "account_type" (
"name"
);
COMMIT;
This problem might be related to an unanswered 6-years-old so question.
