PyQt 与 Sqlalchemy 的集成
PyQt integration with Sqlalchemy
我正在尝试通过 Sqlalchemy 将我使用 PyQt 创建的表单添加到数据库中，但我想我的 code.I 出现了这个错误
le "/Users/tunji/Desktop/employee.py", line 57, in AddEmployee
session = session.add(Employee(self.name,self.email))
AttributeError: 'bool' object has no attribute 'name'.
任何人都可以帮助提供一个代码片段，该代码片段可以通过使用 Sqlalchemy 创建到数据库中的表单添加信息吗？
from PyQt4 import QtCore, QtGui
import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
# My base structure
Base = declarative_base()
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Employee(Base):
__tablename__ = 'employees'
employee_id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
name = sqlalchemy.Column(sqlalchemy.String, nullable=False)
email = sqlalchemy.Column(sqlalchemy.String)
def __repr__(self):
return "<User(name='%s', email='%s')>" % (self.name, self.email)
engine = sqlalchemy.create_engine("sqlite:///my_db.db", echo='debug')
Base.metadata.create_all(engine)
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
class Ui_Dialog(object):
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
def AddEmployee(Base,self):
session = DBsession()
session = session.add(Employee(self.name,self.email))
session.commit()
def setupUi(self, Dialog):
Dialog.setObjectName(_fromUtf8("Dialog"))
Dialog.resize(400, 276)
self.name_lineEdit = QtGui.QLineEdit(Dialog)
self.name_lineEdit.setGeometry(QtCore.QRect(180, 30, 113, 21))
self.name_lineEdit.setObjectName(_fromUtf8("name_lineEdit"))
self.email_lineEdit = QtGui.QLineEdit(Dialog)
self.email_lineEdit.setGeometry(QtCore.QRect(180, 90, 113, 21))
self.email_lineEdit.setObjectName(_fromUtf8("email_lineEdit"))
self.name_label = QtGui.QLabel(Dialog)
self.name_label.setGeometry(QtCore.QRect(80, 30, 60, 16))
self.name_label.setObjectName(_fromUtf8("name_label"))
self.email_label = QtGui.QLabel(Dialog)
self.email_label.setGeometry(QtCore.QRect(80, 90, 60, 16))
self.email_label.setObjectName(_fromUtf8("email_label"))
self.add_employee_btn = QtGui.QPushButton(Dialog)
self.add_employee_btn.setGeometry(QtCore.QRect(180, 170, 113, 32))
self.add_employee_btn.setObjectName(_fromUtf8("add_employee_btn"))
self.add_employee_btn.clicked.connect(self.AddEmployee)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(_translate("Dialog", "Add Employee", None))
self.name_label.setText(_translate("Dialog", "Name", None))
self.email_label.setText(_translate("Dialog", "email", None))
self.add_employee_btn.setText(_translate("Dialog", "AddEmployee", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
Dialog = QtGui.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())
首先你必须了解 self 的目标是什么，它在方法中的位置不仅仅是任何人（因为它读取 What is the purpose of self?），例如在 def AddEmployee(Base, self)，另一方面，为什么你认为 AddEmployee 传递 Base？，这没有意义，self 必须是第一个参数，你添加另一个参数这将是一个布尔值因为点击默认那个参数。
另一方面，PyQt 建议不要修改设计，而是创建另一个 class 继承适当的小部件并用设计填充它（有关更多信息，请阅读 http://pyqt.sourceforge.net/Docs/PyQt5/designer.html）。
另一个错误是你必须学会重用而不是无谓地创造。另一个错误是 session.add() 没有 return 任何东西。
考虑并更正上述错误，得出以下结论：
from PyQt4 import QtCore, QtGui
import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName(_fromUtf8("Dialog"))
Dialog.resize(400, 276)
self.name_lineEdit = QtGui.QLineEdit(Dialog)
self.name_lineEdit.setGeometry(QtCore.QRect(180, 30, 113, 21))
self.name_lineEdit.setObjectName(_fromUtf8("name_lineEdit"))
self.email_lineEdit = QtGui.QLineEdit(Dialog)
self.email_lineEdit.setGeometry(QtCore.QRect(180, 90, 113, 21))
self.email_lineEdit.setObjectName(_fromUtf8("email_lineEdit"))
self.name_label = QtGui.QLabel(Dialog)
self.name_label.setGeometry(QtCore.QRect(80, 30, 60, 16))
self.name_label.setObjectName(_fromUtf8("name_label"))
self.email_label = QtGui.QLabel(Dialog)
self.email_label.setGeometry(QtCore.QRect(80, 90, 60, 16))
self.email_label.setObjectName(_fromUtf8("email_label"))
self.add_employee_btn = QtGui.QPushButton(Dialog)
self.add_employee_btn.setGeometry(QtCore.QRect(180, 170, 113, 32))
self.add_employee_btn.setObjectName(_fromUtf8("add_employee_btn"))
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(_translate("Dialog", "Add Employee", None))
self.name_label.setText(_translate("Dialog", "Name", None))
self.email_label.setText(_translate("Dialog", "email", None))
self.add_employee_btn.setText(_translate("Dialog", "AddEmployee", None))
Base = declarative_base()
class Employee(Base):
__tablename__ = 'employees'
employee_id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
name = sqlalchemy.Column(sqlalchemy.String, nullable=False)
email = sqlalchemy.Column(sqlalchemy.String)
def __repr__(self):
return "<User(name='%s', email='%s')>" % (self.name, self.email)
engine = sqlalchemy.create_engine("sqlite:///my_db.db", echo='debug')
Base.metadata.create_all(engine)
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
class Dialog(QtGui.QDialog, Ui_Dialog):
def __init__(self, parent=None):
super(Dialog, self).__init__(parent)
self.setupUi(self)
self.add_employee_btn.clicked.connect(self.addEmployee)
@QtCore.pyqtSlot()
def addEmployee(self):
name = str(self.name_lineEdit.text())
email = str(self.email_lineEdit.text())
session.add(Employee(name=name, email=email))
session.commit()
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
w = Dialog()
w.show()
sys.exit(app.exec_())
我正在尝试通过 Sqlalchemy 将我使用 PyQt 创建的表单添加到数据库中，但我想我的 code.I 出现了这个错误
le "/Users/tunji/Desktop/employee.py", line 57, in AddEmployee
session = session.add(Employee(self.name,self.email))
AttributeError: 'bool' object has no attribute 'name'.
任何人都可以帮助提供一个代码片段，该代码片段可以通过使用 Sqlalchemy 创建到数据库中的表单添加信息吗？
from PyQt4 import QtCore, QtGui
import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
# My base structure
Base = declarative_base()
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Employee(Base):
__tablename__ = 'employees'
employee_id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
name = sqlalchemy.Column(sqlalchemy.String, nullable=False)
email = sqlalchemy.Column(sqlalchemy.String)
def __repr__(self):
return "<User(name='%s', email='%s')>" % (self.name, self.email)
engine = sqlalchemy.create_engine("sqlite:///my_db.db", echo='debug')
Base.metadata.create_all(engine)
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
class Ui_Dialog(object):
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
def AddEmployee(Base,self):
session = DBsession()
session = session.add(Employee(self.name,self.email))
session.commit()
def setupUi(self, Dialog):
Dialog.setObjectName(_fromUtf8("Dialog"))
Dialog.resize(400, 276)
self.name_lineEdit = QtGui.QLineEdit(Dialog)
self.name_lineEdit.setGeometry(QtCore.QRect(180, 30, 113, 21))
self.name_lineEdit.setObjectName(_fromUtf8("name_lineEdit"))
self.email_lineEdit = QtGui.QLineEdit(Dialog)
self.email_lineEdit.setGeometry(QtCore.QRect(180, 90, 113, 21))
self.email_lineEdit.setObjectName(_fromUtf8("email_lineEdit"))
self.name_label = QtGui.QLabel(Dialog)
self.name_label.setGeometry(QtCore.QRect(80, 30, 60, 16))
self.name_label.setObjectName(_fromUtf8("name_label"))
self.email_label = QtGui.QLabel(Dialog)
self.email_label.setGeometry(QtCore.QRect(80, 90, 60, 16))
self.email_label.setObjectName(_fromUtf8("email_label"))
self.add_employee_btn = QtGui.QPushButton(Dialog)
self.add_employee_btn.setGeometry(QtCore.QRect(180, 170, 113, 32))
self.add_employee_btn.setObjectName(_fromUtf8("add_employee_btn"))
self.add_employee_btn.clicked.connect(self.AddEmployee)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(_translate("Dialog", "Add Employee", None))
self.name_label.setText(_translate("Dialog", "Name", None))
self.email_label.setText(_translate("Dialog", "email", None))
self.add_employee_btn.setText(_translate("Dialog", "AddEmployee", None))
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
Dialog = QtGui.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())
首先你必须了解 self 的目标是什么，它在方法中的位置不仅仅是任何人（因为它读取 What is the purpose of self?），例如在 def AddEmployee(Base, self)，另一方面，为什么你认为 AddEmployee 传递 Base？，这没有意义，self 必须是第一个参数，你添加另一个参数这将是一个布尔值因为点击默认那个参数。
另一方面，PyQt 建议不要修改设计，而是创建另一个 class 继承适当的小部件并用设计填充它（有关更多信息，请阅读 http://pyqt.sourceforge.net/Docs/PyQt5/designer.html）。
另一个错误是你必须学会重用而不是无谓地创造。另一个错误是 session.add() 没有 return 任何东西。
考虑并更正上述错误，得出以下结论：
from PyQt4 import QtCore, QtGui
import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
def _fromUtf8(s):
return s
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def _translate(context, text, disambig):
return QtGui.QApplication.translate(context, text, disambig)
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName(_fromUtf8("Dialog"))
Dialog.resize(400, 276)
self.name_lineEdit = QtGui.QLineEdit(Dialog)
self.name_lineEdit.setGeometry(QtCore.QRect(180, 30, 113, 21))
self.name_lineEdit.setObjectName(_fromUtf8("name_lineEdit"))
self.email_lineEdit = QtGui.QLineEdit(Dialog)
self.email_lineEdit.setGeometry(QtCore.QRect(180, 90, 113, 21))
self.email_lineEdit.setObjectName(_fromUtf8("email_lineEdit"))
self.name_label = QtGui.QLabel(Dialog)
self.name_label.setGeometry(QtCore.QRect(80, 30, 60, 16))
self.name_label.setObjectName(_fromUtf8("name_label"))
self.email_label = QtGui.QLabel(Dialog)
self.email_label.setGeometry(QtCore.QRect(80, 90, 60, 16))
self.email_label.setObjectName(_fromUtf8("email_label"))
self.add_employee_btn = QtGui.QPushButton(Dialog)
self.add_employee_btn.setGeometry(QtCore.QRect(180, 170, 113, 32))
self.add_employee_btn.setObjectName(_fromUtf8("add_employee_btn"))
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(_translate("Dialog", "Add Employee", None))
self.name_label.setText(_translate("Dialog", "Name", None))
self.email_label.setText(_translate("Dialog", "email", None))
self.add_employee_btn.setText(_translate("Dialog", "AddEmployee", None))
Base = declarative_base()
class Employee(Base):
__tablename__ = 'employees'
employee_id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
name = sqlalchemy.Column(sqlalchemy.String, nullable=False)
email = sqlalchemy.Column(sqlalchemy.String)
def __repr__(self):
return "<User(name='%s', email='%s')>" % (self.name, self.email)
engine = sqlalchemy.create_engine("sqlite:///my_db.db", echo='debug')
Base.metadata.create_all(engine)
DBsession = sqlalchemy.orm.sessionmaker(bind=engine)
session = DBsession()
class Dialog(QtGui.QDialog, Ui_Dialog):
def __init__(self, parent=None):
super(Dialog, self).__init__(parent)
self.setupUi(self)
self.add_employee_btn.clicked.connect(self.addEmployee)
@QtCore.pyqtSlot()
def addEmployee(self):
name = str(self.name_lineEdit.text())
email = str(self.email_lineEdit.text())
session.add(Employee(name=name, email=email))
session.commit()
if __name__ == "__main__":
import sys
app = QtGui.QApplication(sys.argv)
w = Dialog()
w.show()
sys.exit(app.exec_())