小贝子编程

Python CRUD实例函数导致pyqt5 GUI崩溃



我创建了一个简单的CRUD程序，需要将其转换为GUI。我的crud函数以前没有出现任何问题，但在删除qtableview中的相同项后调用它们时，软件崩溃了。我可以成功地创建一个新的记录对象，将其添加到表小部件、内存中的数组中，还可以更新我的数据库。我可以使用QTableWidget.currentRow((中的索引从qtableview中删除，但我不能使用相同的索引使用delete函数从数据库中删除记录，我可以使用QTableWidget.courrentRow(和QTableWidget.currentColumn((编辑特定字段，但不能使用相同值从内存列表或数据库中删除数据。

我的列表加载数据，但当尝试执行任何crud方法时，应用程序会停止。

LayoutManager.py

import pandas as pd
import numpy as np
import sqlite3
import csv
import CheeseRecord

class ListManager:
""" ListManagement class to perform function on the list of records """
cheese_list = []
target_database = 'database.sqlite'
cheese_frame = pd.DataFrame
def __init__(self, csv_location, database_location):
self.csv_location = csv_location
self.database_location = database_location
self.conn = sqlite3.connect(database_location)
""" constructor """
def csv_to_dataframe(self):
""" Function to parse csv file for desired columns, stores them in a Pandas Dataframe """
try:
self.cheese_frame = pd.read_csv(self.csv_location,
usecols=['CheeseId', 'CheeseNameEn', 'ManufacturerNameEn', 'ManufacturerProvCode',
'ManufacturingTypeEn', 'WebSiteEn', 'FatContentPercent',
'MoisturePercent',
'ParticularitiesEn', 'FlavourEn', 'CharacteristicsEn',
'RipeningEn',
'Organic',
'CategoryTypeEn', 'MilkTypeEn', 'MilkTreatmentTypeEn',
'RindTypeEn',
'LastUpdateDate'])
except IOError as e:
print(e)
print("CSV Loaded to Memory and Stored in a Pandas Dataframe")
def dataframe_to_list(self):
""" Function to create a list of cheeseRecord objects """
""" replace pandas null field (nan) with whitespace"""
self.cheese_frame.replace(np.nan, '', regex=True)
"""iterate over reach row and create CheeseRecord object using the csv fields """
for index, rows in self.cheese_frame.iterrows():
temp_record = CheeseRecord.CheeseRecord(rows[0], rows[1], rows[2], rows[3], rows[4], rows[5], rows[6],
rows[7],
rows[8],
rows[9], rows[10], rows[11], rows[12], rows[13], rows[14], rows[15],
rows[16],
rows[17])
self.cheese_list.append(temp_record)
"""add newly created record to the list"""
print("Pandas DataFrame converted to List of CheeseRecord Objects")
def dataframe_to_database_table(self):
"""function to dump the pandas dataframe into a table in my database, if the table already exists overwrite it"""
self.cheese_frame.to_sql(name='cheeseData', con=self.conn, if_exists='replace', index=False)
print("Database Created")
def add_record(self, cheese_record):
"""function to add a record"""
"""first add to list in memory"""
self.cheese_list.append(cheese_record)
print("record added to end of list")
"""then add to database table"""
self.add_database_record(cheese_record)
def return_list_object(self):
return self
def new_record(self, Cheese_id, CheeseNameEn, ManufacturerNameEn,
ManufacturerProvCode, ManufacturingTypeEn, WebSiteEn,
FatContentPercent, MoisturePercent, ParticularitiesEn, FlavourEn,
CharacteristicsEn, RipeningEn, Organic, CategoryTypeEn,
MilkTypeEn, MilkTreatmentTypeEn, RindTypeEn,
LastUpdateDate):
return CheeseRecord.CheeseRecord(Cheese_id, CheeseNameEn, ManufacturerNameEn,
ManufacturerProvCode, ManufacturingTypeEn, WebSiteEn,
FatContentPercent, MoisturePercent, ParticularitiesEn, FlavourEn,
CharacteristicsEn, RipeningEn, Organic, CategoryTypeEn,
MilkTypeEn, MilkTreatmentTypeEn, RindTypeEn,
LastUpdateDate)
def print_list(self):
"""function to print out list of cheese records"""
for index in self.cheese_list:
print(index.convert_to_string())
def print_at_index(self, index):
"""function to print cheese record at index"""
print(self.cheese_list[index].convert_to_string())
def delete_at_index(self, index):
"""function to delete cheese record at index"""
"""first delete from list in memory"""
self.cheese_list.pop(index)
print("item at index " + str(index) + " deleted")
"""then delete from database"""
self.delete_database_record(index)
def write_to_csv(self):
"""function to write list from memory to data.csv"""
with open('data.csv', 'w', ) as csvfile:
writer = csv.writer(csvfile)
writer.writerow(['cheese_id', 'CheeseNameEn', 'ManufacturerNameEn',
'ManufacturerProvCode', 'ManufacturingTypeEn', 'WebSiteEn',
'FatContentPercent', 'MoisturePercent', 'ParticularitiesEn', 'FlavourEn',
'CharacteristicsEn', 'RipeningEn', 'Organic', 'CategoryTypeEn',
'MilkTypeEn', 'MilkTreatmentTypeEn', 'RindTypeEn',
'LastUpdateDate'])
for index in self.cheese_list:
writer.writerow(
[str(index.CheeseId), index.CheeseNameEn, index.ManufacturerNameEn, index.ManufacturerProvCode,
index.ManufacturingTypeEn, index.WebSiteEn, index.FatContentPercent, index.MoisturePercent,
index.ParticularitiesEn, index.FlavourEn, index.CharacteristicsEn, index.RipeningEn, index.Organic,
index.CategoryTypeEn, index.MilkTypeEn, index.MilkTreatmentTypeEn, index.RindTypeEn,
index.LastUpdateDate])
print("Dataset written to data.csvn")
def edit_at_index(self, index: int, row: int, value: str):
"""function to edit cheese record instance field at index, row"""
if row == 0:
self.cheese_list[index].CheeseId = value
elif row == 1:
self.cheese_list[index].CheeseNameEn = value
elif row == 2:
self.cheese_list[index].ManufacturerNameEn = value
elif row == 3:
self.cheese_list[index].ManufacturerProvCode = value
elif row == 4:
self.cheese_list[index].ManufacturingTypeEn = value
elif row == 5:
self.cheese_list[index].WebSiteEn = value
elif row == 6:
self.cheese_list[index].FatContentPercent = value
elif row == 7:
self.cheese_list[index].MoisturePercent = value
elif row == 8:
self.cheese_list[index].ParticularitiesEn = value
elif row == 9:
self.cheese_list[index].FlavourEn = value
elif row == 10:
self.cheese_list[index].CharacteristicsEn = value
elif row == 11:
self.cheese_list[index].RipeningEn = value
elif row == 12:
self.cheese_list[index].Organic = value
elif row == 13:
self.cheese_list[index].CategoryTypeEn = value
elif row == 14:
self.cheese_list[index].MilkTypeEn = value
elif row == 15:
self.cheese_list[index].MilkTreatmentTypeEn = value
elif row == 16:
self.cheese_list[index].RindTypeEn = value
elif row == 17:
self.cheese_list[index].LastUpdateDate = value
print("Value Updatedn")
print(self.cheese_list[index].convert_to_string())
def add_database_record(self, cheese_record):
"""function to add a new record to the database"""
cursor = self.conn.cursor()
sql_insert_query = '''INSERT INTO cheeseData(CheeseId, CheeseNameEn, ManufacturerNameEn,
ManufacturerProvCode, ManufacturingTypeEn, WebSiteEn,
FatContentPercent, MoisturePercent, ParticularitiesEn, FlavourEn,
CharacteristicsEn, RipeningEn, Organic, CategoryTypeEn,
MilkTypeEn, MilkTreatmentTypeEn, RindTypeEn,
LastUpdateDate)VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'''
row_data = (cheese_record.CheeseId, cheese_record.CheeseNameEn, cheese_record.ManufacturerNameEn,
cheese_record.ManufacturerProvCode, cheese_record.ManufacturingTypeEn, cheese_record.WebSiteEn,
cheese_record.FatContentPercent, cheese_record.MoisturePercent, cheese_record.ParticularitiesEn,
cheese_record.FlavourEn, cheese_record.CharacteristicsEn, cheese_record.RipeningEn,
cheese_record.Organic, cheese_record.CategoryTypeEn, cheese_record.MilkTypeEn,
cheese_record.MilkTreatmentTypeEn, cheese_record.RindTypeEn, cheese_record.LastUpdateDate)
cursor.execute(sql_insert_query, row_data)
self.conn.commit()
cursor.close()
def delete_database_record(self, index):
"""function to delete a database record at index"""
delete_cursor = self.conn.cursor()
delete_cursor.execute('''DELETE from cheeseData where rowid=?''', (index,))
print("Record deleted at rowid = " + str(index))
delete_cursor.close()
def commit_and_close(self):
self.conn.commit()
self.conn.close()
print("Connection Closed")

Main.py

from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QInputDialog, QLineEdit
import ListManager

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.cheese_list = ListManager.ListManager('canadianCheeseDirectory.csv', 'canadianCheeseDirectory.sqlite')
self.input_CheeseId = QLineEdit(MainWindow)
self.input_CheeseNameEn = QLineEdit(MainWindow)
self.input_ManufacturerNameEn = QLineEdit(MainWindow)
self.input_ManufacturerProvCode = QLineEdit(MainWindow)
self.input_ManufacturingTypeEn = QLineEdit(MainWindow)
self.input_WebSiteEn = QLineEdit(MainWindow)
self.input_FatContentPercent = QLineEdit(MainWindow)
self.input_MoisturePercent = QLineEdit(MainWindow)
self.input_ParticularitiesEn = QLineEdit(MainWindow)
self.input_FlavourEn = QLineEdit(MainWindow)
self.input_CharacteristicsEn = QLineEdit(MainWindow)
self.input_RipeningEn = QLineEdit(MainWindow)
self.input_Organic = QLineEdit(MainWindow)
self.input_CategoryTypeEn = QLineEdit(MainWindow)
self.input_MilkTypeEn = QLineEdit(MainWindow)
self.input_MilkTreatmentTypeEn = QLineEdit(MainWindow)
self.input_RindTypeEn = QLineEdit(MainWindow)
self.input_LastUpdateDate = QLineEdit(MainWindow)
self.input_editInput = QLineEdit(MainWindow)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.delete_button = QtWidgets.QPushButton(self.centralwidget)
self.delete_button.setGeometry(QtCore.QRect(710, 180, 75, 23))
self.delete_button.setObjectName("delete_button")
self.delete_button.clicked.connect(self.deleteRecord)
self.create_button = QtWidgets.QPushButton(self.centralwidget)
self.create_button.setGeometry(QtCore.QRect(710, 120, 75, 23))
self.create_button.setObjectName("create_button")
self.create_button.clicked.connect(self.showDialogAdd)
self.edit_button = QtWidgets.QPushButton(self.centralwidget)
self.edit_button.setGeometry(QtCore.QRect(710, 150, 75, 23))
self.edit_button.setObjectName("edit_button")
self.edit_button.clicked.connect(self.showDialogEdit)
self.close_button = QtWidgets.QPushButton(self.centralwidget)
self.close_button.setGeometry(QtCore.QRect(710, 550, 75, 23))
self.close_button.setObjectName("close_button")
self.load_button = QtWidgets.QPushButton(self.centralwidget)
self.load_button.setGeometry(QtCore.QRect(710, 10, 75, 23))
self.load_button.setObjectName("load_button")
self.load_button.clicked.connect(self.loadData)
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setGeometry(QtCore.QRect(0, 0, 701, 591))
self.tableWidget.setColumnCount(19)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setRowCount(0)
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setText("")
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.delete_button.setText(_translate("MainWindow", "Delete"))
self.create_button.setText(_translate("MainWindow", "Create"))
self.edit_button.setText(_translate("MainWindow", "Edit"))
self.close_button.setText(_translate("MainWindow", "Close"))
self.load_button.setText(_translate("MainWindow", "Load"))
def loadData(self):
self.cheese_list.csv_to_dataframe()
self.cheese_list.dataframe_to_database_table()
results = self.cheese_list.conn.execute("SELECT * FROM cheeseData")
for row_number, row_data in enumerate(results):
self.tableWidget.insertRow(row_number)
for column_number, data in enumerate(row_data):
self.tableWidget.setItem(row_number, column_number, QtWidgets.QTableWidgetItem(str(data)))
def deleteRecord(self):
row = self.tableWidget.currentRow()
column = self.tableWidget.currentColumn()
self.tableWidget.removeRow(row)


def createRecord(self):
self.tableWidget.setRowCount(self.tableWidget.rowCount() + 1)
tempObject = self.cheese_list.new_record(self.input_CheeseId, self.input_CheeseNameEn,
self.input_ManufacturerNameEn,
self.input_ManufacturerProvCode, self.input_ManufacturingTypeEn,
self.input_WebSiteEn, self.input_FatContentPercent,
self.input_MoisturePercent, self.input_ParticularitiesEn,
self.input_FlavourEn, self.input_CharacteristicsEn,
self.input_RipeningEn, self.input_Organic, self.input_CategoryTypeEn,
self.input_MilkTypeEn, self.input_MilkTreatmentTypeEn,
self.input_RindTypeEn, self.input_LastUpdateDate)
self.cheese_list.add_record(tempObject)
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 0,
QtWidgets.QTableWidgetItem(str(self.input_CheeseId)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 1,
QtWidgets.QTableWidgetItem(str(self.input_CheeseNameEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 2,
QtWidgets.QTableWidgetItem(str(self.input_ManufacturerNameEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 3,
QtWidgets.QTableWidgetItem(str(self.input_ManufacturerProvCode)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 4,
QtWidgets.QTableWidgetItem(str(self.input_ManufacturingTypeEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 5,
QtWidgets.QTableWidgetItem(str(self.input_WebSiteEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 6,
QtWidgets.QTableWidgetItem(str(self.input_FatContentPercent)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 7,
QtWidgets.QTableWidgetItem(str(self.input_MoisturePercent)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 8,
QtWidgets.QTableWidgetItem(str(self.input_ParticularitiesEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 9,
QtWidgets.QTableWidgetItem(str(self.input_FlavourEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 10,
QtWidgets.QTableWidgetItem(str(self.input_CharacteristicsEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 11,
QtWidgets.QTableWidgetItem(str(self.input_RipeningEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 12,
QtWidgets.QTableWidgetItem(str(self.input_Organic)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 13,
QtWidgets.QTableWidgetItem(str(self.input_CategoryTypeEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 14,
QtWidgets.QTableWidgetItem(str(self.input_MilkTypeEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 15,
QtWidgets.QTableWidgetItem(str(self.input_MilkTreatmentTypeEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 16,
QtWidgets.QTableWidgetItem(str(self.input_RindTypeEn)))
self.tableWidget.setItem(self.tableWidget.rowCount() - 1, 17,
QtWidgets.QTableWidgetItem(str(self.input_LastUpdateDate)))
def editRecord(self):
row = self.tableWidget.currentRow()
column = self.tableWidget.currentColumn()
self.tableWidget.setItem(row, column,
QtWidgets.QTableWidgetItem(str(self.input_editInput)))

def showDialogAdd(self):
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog',
'Enter your name:', QLineEdit.Normal)
if okPressed:
self.input_CheeseId = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_CheeseNameEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_ManufacturerNameEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_ManufacturerProvCode = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_ManufacturingTypeEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_WebSiteEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_FatContentPercent = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_MoisturePercent = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_ParticularitiesEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_FlavourEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_CharacteristicsEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_RipeningEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_Organic = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_CategoryTypeEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_MilkTypeEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_MilkTreatmentTypeEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_RindTypeEn = text
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog', 'Enter your name', QLineEdit.Normal)
if okPressed:
self.input_LastUpdateDate = text
self.createRecord()
def showDialogEdit(self):
text, okPressed = QInputDialog.getText(MainWindow, 'Input Dialog',
'Enter your name:', QLineEdit.Normal)
if okPressed:
self.input_editInput = text
self.editRecord()

if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())

奶酪唱片.py导入csv#Sean Di Rienzo

class CheeseRecord:
""" CheeseRecord object """
def __init__(self, cheese_id, CheeseNameEn, ManufacturerNameEn,
ManufacturerProvCode, ManufacturingTypeEn, WebSiteEn,
FatContentPercent, MoisturePercent, ParticularitiesEn, FlavourEn,
CharacteristicsEn, RipeningEn, Organic, CategoryTypeEn,
MilkTypeEn, MilkTreatmentTypeEn, RindTypeEn,
LastUpdateDate):
"""Constructor , taking in parameters for the desired fields from the csv"""
self.CheeseId = cheese_id
self.CheeseNameEn = CheeseNameEn
self.ManufacturerNameEn = ManufacturerNameEn
self.ManufacturerProvCode = ManufacturerProvCode
self.ManufacturingTypeEn = ManufacturingTypeEn
self.WebSiteEn = WebSiteEn
self.FatContentPercent = FatContentPercent
self.MoisturePercent = MoisturePercent
self.ParticularitiesEn = ParticularitiesEn
self.FlavourEn = FlavourEn
self.CharacteristicsEn = CharacteristicsEn
self.RipeningEn = RipeningEn
self.Organic = Organic
self.CategoryTypeEn = CategoryTypeEn
self.MilkTypeEn = MilkTypeEn
self.MilkTreatmentTypeEn = MilkTreatmentTypeEn
self.RindTypeEn = RindTypeEn
self.LastUpdateDate = LastUpdateDate

def convert_to_string(self):
""" Returns a string with the CheeseObject's data """
cheese_record_string = " "
cheese_record_string += str(self.CheeseId) + " | "
cheese_record_string += str(self.CheeseNameEn) + " | "
cheese_record_string += str(self.ManufacturerNameEn) + " | "
cheese_record_string += str(self.ManufacturerProvCode) + " | "
cheese_record_string += str(self.ManufacturingTypeEn) + " | "
cheese_record_string += str(self.WebSiteEn) + " | "
cheese_record_string += str(self.FatContentPercent) + " | "
cheese_record_string += str(self.MoisturePercent) + " | "
cheese_record_string += str(self.ParticularitiesEn) + " | "
cheese_record_string += str(self.FlavourEn) + " | "
cheese_record_string += str(self.CharacteristicsEn) + " | "
cheese_record_string += str(self.RipeningEn) + " | "
cheese_record_string += str(self.Organic) + " | "
cheese_record_string += str(self.CategoryTypeEn) + " | "
cheese_record_string += str(self.MilkTypeEn) + " | "
cheese_record_string += str(self.MilkTreatmentTypeEn) + " | "
cheese_record_string += str(self.RindTypeEn) + " | "
cheese_record_string += str(self.LastUpdateDate)
return cheese_record_string

您有以下错误：

  • 您可以使用名称来分配一个不同的值，例如input_CheeseId是QLineEdit，但随后使用input_Cheese Id来存储文本，下次您希望使用input_CeeseId获取QLineEdit的文本，但这已经是一个生成错误的文本。

  • 另一个更琐碎的错误是PyQt建议不要修改Qt设计器生成的类，而是创建一个从适当的小部件继承的类，并使用初始类来填充小部件(有关更多信息，请参阅此(。

考虑到上述情况，解决方案为：

# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.13.1
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QInputDialog, QLineEdit
import ListManager

class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.input_CheeseId = QLineEdit(MainWindow)
self.input_CheeseNameEn = QLineEdit(MainWindow)
self.input_ManufacturerNameEn = QLineEdit(MainWindow)
self.input_ManufacturerProvCode = QLineEdit(MainWindow)
self.input_ManufacturingTypeEn = QLineEdit(MainWindow)
self.input_WebSiteEn = QLineEdit(MainWindow)
self.input_FatContentPercent = QLineEdit(MainWindow)
self.input_MoisturePercent = QLineEdit(MainWindow)
self.input_ParticularitiesEn = QLineEdit(MainWindow)
self.input_FlavourEn = QLineEdit(MainWindow)
self.input_CharacteristicsEn = QLineEdit(MainWindow)
self.input_RipeningEn = QLineEdit(MainWindow)
self.input_Organic = QLineEdit(MainWindow)
self.input_CategoryTypeEn = QLineEdit(MainWindow)
self.input_MilkTypeEn = QLineEdit(MainWindow)
self.input_MilkTreatmentTypeEn = QLineEdit(MainWindow)
self.input_RindTypeEn = QLineEdit(MainWindow)
self.input_LastUpdateDate = QLineEdit(MainWindow)
self.input_editInput = QLineEdit(MainWindow)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.delete_button = QtWidgets.QPushButton(self.centralwidget)
self.delete_button.setGeometry(QtCore.QRect(710, 180, 75, 23))
self.delete_button.setObjectName("delete_button")
self.create_button = QtWidgets.QPushButton(self.centralwidget)
self.create_button.setGeometry(QtCore.QRect(710, 120, 75, 23))
self.create_button.setObjectName("create_button")
self.edit_button = QtWidgets.QPushButton(self.centralwidget)
self.edit_button.setGeometry(QtCore.QRect(710, 150, 75, 23))
self.edit_button.setObjectName("edit_button")
self.close_button = QtWidgets.QPushButton(self.centralwidget)
self.close_button.setGeometry(QtCore.QRect(710, 550, 75, 23))
self.close_button.setObjectName("close_button")
self.load_button = QtWidgets.QPushButton(self.centralwidget)
self.load_button.setGeometry(QtCore.QRect(710, 10, 75, 23))
self.load_button.setObjectName("load_button")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setGeometry(QtCore.QRect(0, 0, 701, 591))
self.tableWidget.setColumnCount(19)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setRowCount(0)
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setText("")
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.delete_button.setText(_translate("MainWindow", "Delete"))
self.create_button.setText(_translate("MainWindow", "Create"))
self.edit_button.setText(_translate("MainWindow", "Edit"))
self.close_button.setText(_translate("MainWindow", "Close"))
self.load_button.setText(_translate("MainWindow", "Load"))

class Dialog(QtWidgets.QDialog):
def __init__(self, names, parent=None):
super().__init__(parent)
self.line_edits = []
scrollarea = QtWidgets.QScrollArea(widgetResizable=True)
widget = QtWidgets.QWidget()
scrollarea.setWidget(widget)
flay = QtWidgets.QFormLayout(widget)
for name in names:
le = QtWidgets.QLineEdit()
flay.addRow(name, le)
self.line_edits.append(le)
buttonBox = QtWidgets.QDialogButtonBox()
buttonBox.setOrientation(QtCore.Qt.Horizontal)
buttonBox.setStandardButtons(
QtWidgets.QDialogButtonBox.Cancel | QtWidgets.QDialogButtonBox.Ok
)
vlay = QtWidgets.QVBoxLayout(self)
vlay.addWidget(scrollarea)
vlay.addWidget(buttonBox)
buttonBox.accepted.connect(self.accept)
buttonBox.rejected.connect(self.reject)
def get_results(self):
return [le.text() for le in self.line_edits]

class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.setupUi(self)
self.cheese_list = ListManager.ListManager(
"canadianCheeseDirectory.csv", "canadianCheeseDirectory.sqlite"
)
self.load_button.clicked.connect(self.loadData)
self.edit_button.clicked.connect(self.showDialogEdit)
self.delete_button.clicked.connect(self.deleteRecord)
self.create_button.clicked.connect(self.showDialogAdd)
@QtCore.pyqtSlot()
def loadData(self):
self.cheese_list.csv_to_dataframe()
self.cheese_list.dataframe_to_database_table()
results = self.cheese_list.conn.execute("SELECT * FROM cheeseData")
self.tableWidget.clear()
self.tableWidget.setHorizontalHeaderLabels(list(self.cheese_list.cheese_frame))
for row_number, row_data in enumerate(results):
self.tableWidget.insertRow(row_number)
for column_number, data in enumerate(row_data):
self.tableWidget.setItem(
row_number, column_number, QtWidgets.QTableWidgetItem(str(data))
)
@QtCore.pyqtSlot()
def deleteRecord(self):
row = self.tableWidget.currentRow()
column = self.tableWidget.currentColumn()
self.tableWidget.removeRow(row)
def createRecord(self, values):
self.tableWidget.setRowCount(self.tableWidget.rowCount() + 1)
tempObject = self.cheese_list.new_record(*values)
self.cheese_list.add_record(tempObject)
for i, value in enumerate(values):
self.tableWidget.setItem(
self.tableWidget.rowCount() - 1, i, QtWidgets.QTableWidgetItem(value)
)
def editRecord(self, text):
row = self.tableWidget.currentRow()
column = self.tableWidget.currentColumn()
self.tableWidget.setItem(row, column, QtWidgets.QTableWidgetItem(text))
@QtCore.pyqtSlot()
def showDialogAdd(self):
dialog = Dialog(list(self.cheese_list.cheese_frame), self)
if dialog.exec_() == QtWidgets.QDialog.Accepted:
values = dialog.get_results()
self.createRecord(values)
@QtCore.pyqtSlot()
def showDialogEdit(self):
text, okPressed = QInputDialog.getText(
self, "Input Dialog", "Enter your name:", QLineEdit.Normal
)
if okPressed:
self.editRecord(text)

if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())

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