问题描述
我正在加载一个带有来自数据帧的值的 wxGrid。我正在尝试使用线程，所以我的 GUI 不会冻结（一些 sql 表是 ~60,000 x 16 并且需要一些时间来加载），但我想我不理解这个概念。有时它运行得很好。 其他时候它会崩溃并退出： 无法转换为整数：3221226525。路径“exitCode”。 对于 Int32，值要么太大要么太小。 我还尝试实现另一个线程，以便我的 wx.gauge 正确加载。这会导致它更频繁地失败。谁能给我任何线索？我已经坚持了几个小时。
我的代码片段： 我还尝试实现另一个线程来单独更新 wx.Gauge ，但没有成功。仪表更新了，但有非常奇怪的行为。任何帮助将不胜感激。
EDIT CODE ADDED 警告，这可能会很丑
import sys
import os
import wx
import wx.grid as gridlib
import wx.lib.agw.pygauge as PG
import MysqL.connector as sql
import MysqLdb
import datetime
import pandas as pd
from collections import OrderedDict
import threading #as thread
import time
from time import sleep
#import urllib
#result_available = threading.Event()
#df_data=pd.DataFrame()
class PageOne(wx.Panel):
def __init__(self,parent):
wx.Panel.__init__(self,parent)
#wx.StaticText(self,-1,"This is a PageOne object",(20,20))
class PageTwo(wx.Panel):
def __init__(self,"This is a PageTwo object",(40,40))
class PageThree(wx.Panel):
def __init__(self,"This is a PageThree object",(60,60))
class PageDynamic(wx.Panel):
def __init__(self,parent)
wx.StaticText(self,"This is a Dynamic object",60))
class MainFrame(wx.Frame):
def __init__(self,parent):
wx.Frame.__init__(self,parent,title="Varkey Foundation") #none
#Layout
self.__DoLayout()
def __DoLayout(self):
self.SetBackgroundColour( wx.Colour( 58,56,56 ) )
# Here we create a panel and a notebook on the panel
self.p = wx.Panel(self)
self.p.SetBackgroundColour( wx.Colour( 0,0 ) ) # 38,38,38
#self.Show() <Layout Error when GUI is launched
self.Maximize(True)
self.nb = wx.Notebook(self.p)
self.nb.SetBackgroundColour(wx.Colour(58,56) )
#CreateFonts
self.b_font = wx.Font(14,wx.ROMAN,wx.norMAL,wx.BOLD,True)
self.lbl_font = wx.Font(14,True)
self.cb_font = wx.Font(11,wx.SCRIPT,wx.ITALIC,True)
self.h_font = wx.Font(18,wx.DECORATIVE,True)
#Create Title bmp
ico = wx.Icon('varkey_bmp.bmp',wx.BITMAP_TYPE_ICO)
self.SetIcon(ico)
# create the page windows as children of the notebook
self.page1 = PageOne(self.nb)
self.page2 = PageTwo(self.nb)
self.page3 = PageThree(self.nb)
# add the pages to the notebook with the label to show on the tab
self.nb.AddPage(self.page1,"Data")
self.nb.AddPage(self.page2,"Analyze")
self.nb.AddPage(self.page3,"Change Log")
#Create widgets for top sizer
self.lbl_user = wx.StaticText(self.p,label="Username:")
self.lbl_password = wx.StaticText(self.p,label="Password:")
self.lbl_interaction = wx.StaticText(self.p,label="Interaction:")
self.lbl_table = wx.StaticText(self.p,label="Table:")
#SetForground colors
self.lbl_user.SetForegroundColour((255,255,255))
self.lbl_password.SetForegroundColour((255,255))
self.lbl_interaction.SetForegroundColour((255,255))
self.lbl_table.SetForegroundColour((255,255))
#Set Fonts
self.lbl_user.SetFont(self.lbl_font)
self.lbl_password.SetFont(self.lbl_font)
self.lbl_interaction.SetFont(self.lbl_font)
self.lbl_table.SetFont(self.lbl_font)
self.tc_user =wx.TextCtrl(self.p,size = (130,25))
self.tc_password =wx.TextCtrl(self.p,style=wx.TE_PASSWORD | wx.TE_PROCESS_ENTER,25))
self.tc_password.Bind(wx.EVT_TEXT_ENTER,self.onLogin)
self.tc_user.SetFont(self.cb_font)
self.tc_password.SetFont(self.cb_font)
self.btn_login = wx.Button(self.p,label="Login",size=(105,25))
self.btn_login.SetBackgroundColour(wx.Colour(198,89,17))
self.btn_login.SetFont(self.b_font)
self.btn_login.Bind(wx.EVT_BUTTON,self.onLogin) #connect_MysqL
self.btn_logout = wx.Button(self.p,label="logout",25))
self.btn_logout.SetBackgroundColour(wx.Colour(192,0))
self.btn_logout.SetFont(self.b_font)
self.btn_logout.Bind(wx.EVT_BUTTON,self.onlogout)
self.combo_interaction = wx.ComboBox(self.p,size = (160,25),style = wx.CB_READONLY | wx.CB_SORT | wx.CB_SORT)
self.combo_interaction.Bind(wx.EVT_COMBOBox,self.onComboInteraction)
self.combo_table = wx.ComboBox(self.p,style = wx.CB_READONLY | wx.CB_SORT | wx.CB_SORT)
self.combo_table.Bind(wx.EVT_COMBOBox,self.onHideCommands)
self.combo_interaction.SetFont(self.cb_font)
self.combo_table.SetFont(self.cb_font)
#self.combo_table.Bind(wx.EVT_COMBOBox,self.OnComboTable)
self.btn_load = wx.Button(self.p,label="Load Table",25))
self.btn_load.SetBackgroundColour(wx.Colour(31,216,6))
self.btn_load.SetFont(self.b_font)
self.btn_load.Bind(wx.EVT_BUTTON,self.onLoadData)
#Create Widgets for bottom sizer
self.lc_change = wx.ListCtrl(self.p,style = wx.TE_MULTILINE | wx.LC_REPORT | wx.LC_VRULES)
self.lc_change.InsertColumn(0,"User ID")
self.lc_change.InsertColumn(1,"Status")
self.lc_change.InsertColumn(2,"Description")
self.lc_change.InsertColumn(3,"Date/Time")
#Set column widths
self.lc_change.SetColumnWidth(0,75)
self.lc_change.SetColumnWidth(1,75)
self.lc_change.SetColumnWidth(2,450)
self.lc_change.SetColumnWidth(3,125)
#Add Row Button
self.btn_new = wx.Button(self.page1,label="+",size = (35,25))
self.btn_new.SetForegroundColour(wx.Colour(112,173,71))
self.btn_new.SetFont(self.h_font)
self.btn_new.Bind(wx.EVT_BUTTON,self.onInsertRecordBelow)
#Page 1 - Create grids/sizers and add to notebook
self.color1 = (0,0)
self.title = wx.StaticText(self.page1,label="",style = wx.ALIGN_CENTER | wx.ST_NO_AUTORESIZE)
self.title.SetForegroundColour((255,255))
self.title.SetFont(self.h_font)
self.data_grid = gridlib.Grid(self.page1)
self.data_grid.CreateGrid(0,0) #219,16
self.p1_sizer = wx.BoxSizer(wx.VERTICAL)
self.p1_sizer.Add(self.title,wx.EXPAND,5)
self.p1_sizer.Add(self.data_grid,3,wx.RIGHT |wx.LEFT |wx.EXPAND,20)
self.p1_sizer.Add(self.btn_new,-0,wx.ALIGN_CENTER,5)
self.page1.SetSizer(self.p1_sizer)
#Page 2 - Create grids/sizers and add to notebook #<<<<<<< Need to create correct table size
self.analyze_grid = gridlib.Grid(self.page2)
self.analyze_grid.CreateGrid(0,10)
self.p2_sizer = wx.BoxSizer(wx.VERTICAL)
self.p2_sizer.Add(self.analyze_grid,1,wx.EXPAND)
self.page2.SetSizer(self.p2_sizer)
#Page 3 - Create Change Log
self.log_grid = gridlib.Grid(self.page3)
self.log_grid.CreateGrid(0,9)
self.log_grid.EnableEditing(False)
self.p3_sizer = wx.BoxSizer(wx.VERTICAL)
self.p3_sizer.Add(self.log_grid,wx.EXPAND)
self.page3.SetSizer(self.p3_sizer)
#Insert Image
self.staticbitmap = wx.StaticBitmap(self.p)
#browse = wx.Button(self.p,label='browse')
#browse.Bind(wx.EVT_BUTTON,self.Onbrowse)
self.staticbitmap.SetBitmap(wx.Bitmap('varkey_logo2.jpg'))
self
#Create Filler text
self.lbl_filler = wx.StaticText(self.p,size = (125,20))
#Create FlexGridSizers(For top half)
self.left_fgs = wx.FlexGridSizer(3,4,25,15)
self.left_fgs.AddMany([(self.lbl_user,wx.ALIGN_LEFT | wx.LEFT,15),(self.tc_user,wx.EXPAND),(self.lbl_interaction,wx.ALIGN_RIGHT|wx.RIGHT,10),(self.combo_interaction,(self.lbl_password,wx.ALIGN_LEFT| wx.LEFT,(self.tc_password,(self.lbl_table,(self.combo_table),(self.btn_login,2,(self.btn_logout,(self.lbl_filler,(self.btn_load,1)])
#Create Top Sizer and add FGS
self.top_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.top_sizer.Add(self.left_fgs,proportion = 1,flag = wx.ALL|wx.EXPAND,border = 30)
#self.top_sizer.Add(self.right_fgs,flag = wx.TOP|wx.BottOM,border = 30)
self.top_sizer.Add(self.staticbitmap,wx.TOP | wx.RIGHT,border = 40) #30
self.top_sizer.Add(self.lc_change,wx.RIGHT|wx.EXPAND,30)
#Create bottom sizer(For Grid)
self.bottom_sizer = wx.BoxSizer(wx.VERTICAL)
self.bottom_sizer.Add(self.nb,proportion = 5,flag = wx.LEFT |wx.RIGHT | wx.EXPAND,border = 30)
#Create statusbar and progress bar
self.gauge = wx.Gauge(self.p,range = 100,size = (400,20),style = wx.GA_HORIZONTAL)
#self.gauge = PG.PyGauge(self.p,size=(400,style=wx.GA_HORIZONTAL)
#self.gauge.SetDrawValue(draw=True,drawPercent=True,font=None,colour=wx.BLACK,formatString=None)
#self.gauge.SetBackgroundColour(wx.WHITE)
#self.gauge.SetBorderColor(wx.BLACK)
self.dummylbl = wx.StaticText(self.p,size = (5,20))
self.status_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.status_sizer.Add(self.gauge,wx.ALIGN_CENTER|wx.ALL,5)
self.status_sizer.Add(self.dummylbl,wx.ALL,5)
# the layout
self.mainsizer = wx.BoxSizer(wx.VERTICAL)
self.mainsizer.Add(self.top_sizer,proportion = 0,border = 5)
self.mainsizer.Add(self.bottom_sizer,border = 5)
self.mainsizer.Add(self.status_sizer,proportion =0,flag = wx.BottOM|wx.ALIGN_CENTER_HORIZONTAL,border = 15)
self.p.SetSizerAndFit(self.mainsizer)
#self.page3.Bind(wx.EVT_LEFT_DCLICK,self.dynamic_tab)
self.gauge.Hide()
self.hideWidgets()
self.onHideCommands(self)
def thread_start(self): #self,event
th = threading.Thread(target=self.populateGrid) #args=(event,),args=(self,)
th.start()
#th.join()
#result_available.wait()
#def status_thread(self): #TRIED FeedING STATUS BAR HERE
# thr = threading.Thread(target=self.update_statusbar)
# thr.start()
#def update_statusbar(self):
#self.gauge.SetValue((round(i/self.rows)*100))
def hideWidgets(self): #Hide and disable widgets until login
if self.btn_logout.IsShown(): #Initialize and logout
self.btn_logout.Hide()
self.btn_load.disable()
self.combo_interaction.Enable(False)
self.combo_table.Enable(False)
self.tc_user.Enable()
self.tc_password.Enable()
self.btn_login.Show()
else: #When logged in
self.btn_logout.Show()
self.combo_interaction.Enable(True)
self.combo_table.Enable(True)
self.btn_login.Hide()
self.tc_user.disable()
self.tc_password.disable()
def onHideCommands(self,event):
cbval = self.combo_table.GetValue()
if cbval:
self.btn_load.Enable()
self.btn_new.Enable()
else:
self.btn_load.disable()
self.btn_new.disable()
def onLogin(self,event):
#Get permissions from sql table
self.tbl = 'permissions'
self.connect_MysqL()
#try:
sql_query = "SELECT * FROM " + self.tbl
try:
self.cursor.execute(sql_query)
num_fields = len(self.cursor.description)
self.df_permissions = pd.read_sql(sql_query,con=self.db_con)
except:
self.stat = "ERROR"
self.msg = "ERROR: Failed to Connect. Check your internet connection and try again."
wx.MessageBox("Failed to Connect. Check your internet connection and try again.",'CONNECTION ERROR',wx.OK | wx.ICON_ERROR)
self.updateStatus()
return
if(len(self.tc_user.GetValue()) > 0):
id = str(self.tc_user.GetValue())
base = r'^{}'
expr = '(?:\s|^){}(?:,\s|$)'
try:
u = self.df_permissions[self.df_permissions.iloc[:,0].str.contains(base.format(''.join(expr.format(id))),na = False,case = False)].index.values[0]
#u = ((self.df_permissions[self.df_permissions.iloc[:,0].str.match(self.tc_user.GetValue())].index).values)[0] #,na=False,case=False
pwrd = (self.df_permissions.iloc[u,1])
except:
wx.MessageBox("Access denied. " + id + " is not an authorized user.",'Access Denied',wx.OK | wx.ICON_ERROR)
return
#If password is correct,make connection
if(self.tc_password.GetValue() == pwrd):
self.stat = "Successful"
self.msg = "Access Granted."
self.updateStatus()
self.tbl = 'tables'
sql_query = "SELECT * FROM " + self.tbl
self.cursor.execute(sql_query)
self.df_tables = pd.read_sql(sql_query,con=self.db_con)
if str(self.df_permissions.iloc[u,2])=="ALL":
self.interactionlist = self.df_tables['Interaction'].to_list()
self.interaction_filtered = self.df_tables #< For dependent comboBox
else:
read_str = str(self.df_permissions.iloc[u,2])
read_str = read_str.replace(",",")
read_tables = list(read_str.split(","))
self.interaction_filtered = self.df_tables[self.df_tables['Table_Name'].isin(read_tables)]
self.interactionlist = self.interaction_filtered['Interaction'].to_list()
#Remove duplicates and create lists for comboBox
self.interactionlist = list(OrderedDict.fromkeys(self.interactionlist))
self.combo_interaction.SetItems(self.interactionlist)
self.hideWidgets()
else:
Access Denied." + "\n")
self.stat = "ERROR"
self.msg = "ERROR: Incorrect Password. Access Denied."
self.updateStatus()
else:
self.stat = "ERROR"
self.msg = "ERROR: Username cannot be blank!"
self.updateStatus()
self.buildChangeLog()
self.close_connection()
def onlogout(self,event):
self.hideWidgets()
self.destroy_Widgets()
def updateStatus(self):
#Update listControl
self.lc_change.Append([self.tc_user.GetValue(),self.stat,self.msg,str(datetime.datetime.Now().strftime("%Y-%m-%d %H:%M:%s")) + "\n"])
if self.lc_change.GetItemCount() > 0:
self.lc_change.EnsureVisible(self.lc_change.GetItemCount() - 1)
#Update Log Grid
if self.stat == "UPDATE" or self.stat == "DELETE" or self.stat == "INSERT":
self.log_grid.AppendRows(numRows = 1,updateLabels = True)
r = self.log_grid.GetNumberRows() -1
self.log_grid.SetCellValue(r,self.key_id.replace("'",""))
self.log_grid.SetCellValue(r,self.tc_user.GetValue())
self.log_grid.SetCellValue(r,self.action) #Action
self.log_grid.SetCellValue(r,self.tbl)
self.log_grid.SetCellValue(r,self.key_col) #'Column #target_col
self.log_grid.SetCellValue(r,5,self.target_col) #'Old Value
self.log_grid.SetCellValue(r,6,self.oval.replace("'","")) #'New Value
self.log_grid.SetCellValue(r,7,self.nVal.replace("'",8,str(datetime.datetime.Now().strftime("%Y-%m-%d %H:%M:%s"))) #Timestamp
#Size the grid
self.log_grid.AutoSizeColumns(True)
#Set Font color
#index = self.lc_change.GetItemCount()
#item = self.lc_change.GetItem(index)
#self.lc_change.SetItemTextColour(index,'red')
#self.lc_change.InsertItem(index,item)
#print(index)
def destroy_Widgets(self):
#Destroy grid
self.Freeze()
self.data_grid.Destroy()
#Reset and insert blank grid
self.tbl = "elite_advocacy"
self.connect_MysqL()
sql_query = "SELECT * FROM " + self.tbl
self.cursor.execute(sql_query)
num_fields = len(self.cursor.description)
self.df_data = pd.read_sql(sql_query,con=self.db_con)
rows,cols = (int(self.df_data.shape[0]),int(self.df_data.shape[1]))
self.data_grid = gridlib.Grid(self.page1)
self.data_grid.Bind(wx.grid.EVT_GRID_CELL_CHANGED,self.onCellChanged)
self.data_grid.Bind(wx.grid.EVT_GRID_CELL_RIGHT_DCLICK,self.onDeleteRecord)
self.data_grid.Bind(wx.grid.EVT_GRID_CELL_RIGHT_CLICK,self.rightClickMenu)
self.data_grid.CreateGrid(rows,cols)
self.p1_sizer.Insert(1,self.data_grid,wx.RIGHT| wx.LEFT| wx.EXPAND,20)
self.p1_sizer.Layout()
#Clear Rows on log Grid
n = self.log_grid.GetNumberRows()
if n > 0:
self.log_grid.DeleteRows(0,n)
# Clear rows on analyze Grid
n = self.analyze_grid.GetNumberRows()
if n > 0:
self.analyze_grid.DeleteRows(0,n)
#Clear list listCtrl
x = self.lc_change.GetItemCount()
for i in range(x):
self.lc_change.DeleteItem(0)
#Clear textCtrl and ComboBoxes
self.tc_password.SetValue("")
self.tc_user.SetValue("")
self.title.SetLabel("")
self.combo_table.Clear()
self.combo_interaction.Clear()
self.combo_interaction.SetValue("")
self.combo_table.SetValue("")
self.close_connection()
self.Thaw()
def buildChangeLog(self):
self.tbl = 'change_log'
sql_query = "SELECT * FROM " + self.tbl
self.cursor.execute(sql_query)
num_fields = len(self.cursor.description)
#Create Grid Headers
try:
field_names = [i[0] for i in self.cursor.description]
for i,a in enumerate(field_names):
self.log_grid.SetColLabelValue(i,a)
#Size the grid
self.log_grid.AutoSizeColumns(True)
except:
pass
def onComboInteraction(self,event):
self.tables_filtered = self.interaction_filtered[self.interaction_filtered['Interaction'].str.contains(self.combo_interaction.GetValue())]
self.tableslist = self.tables_filtered['Table_Name'].to_list()
self.combo_table.SetItems(self.tableslist)
self.onHideCommands(event)
def dynamic_tab(self,event):
print('dynamic_tab()')
dynamic_page = PageDynamic(self.nb)
self.nb.AddPage(dynamic_page,"Page Dynamic")
def getTable(self):
#Determine sql table from DataFrame
self.tbl_input = self.combo_table.GetValue()
r = ((self.df_tables[self.df_tables.iloc[:,2].str.contains(self.combo_table.GetValue(),na=False)].index).values)[0]
self.tbl = (self.df_tables.iloc[r,3])
def populateGrid(self):
t0 = time.time()
self.rows,self.cols = (int(self.df_data.shape[0]),int(self.df_data.shape[1]))
for i,seq in enumerate(self.df_data.index):
for j,v in enumerate(self.df_data.columns):
self.data_grid.SetCellValue(i,j,str(self.df_data.iloc[i,j]))
#self.gauge.SetValue(int(round(i/self.rows,2)*100)) #int(percentage*100)
self.gauge.SetValue(0)
self.gauge.Hide()
#Size the grid
self.data_grid.AutoSizeColumns(True)
self.stat = "QUERY"
self.msg = str(self.rows) + " loaded from " + self.tbl
self.updateStatus()
#Set title
self.title.SetLabel(str(self.combo_table.GetValue()))
t1 = time.time()
print(t1-t0)
def onLoadData(self,event):
if self.combo_table.GetValue():
#Establish Connection
self.connect_MysqL()
#Get Table
self.getTable()
#self.testFunction()
if self.tbl:
#Get sql Data
t0 = time.time()
self.gauge.Show()
sql_query = "SELECT * FROM " + self.tbl
self.cursor.execute(sql_query)
num_fields = len(self.cursor.description)
temp = pd.read_sql(sql_query,con=self.db_con)
self.df_data = temp[~pd.isnull(temp).all(1)].fillna('')
pd.set_option('display.max_columns',None)
#Destroy grid and insert new resized grid
rows,int(self.df_data.shape[1]))
self.data_grid.Destroy()
self.data_grid = gridlib.Grid(self.page1)
self.data_grid.Bind(wx.grid.EVT_GRID_CELL_CHANGED,self.onCellChanged)
self.data_grid.Bind(wx.grid.EVT_GRID_CELL_RIGHT_DCLICK,self.onDeleteRecord)
#self.data_grid.Bind(gridlib.EVT_GRID_CELL_RIGHT_CLICK,self.showPopupMenu)
self.data_grid.CreateGrid(rows,cols) #self.data_grid.CreateGrid(219,16)
self.p1_sizer.Insert(1,wx.RIGHT| wx.LEFT|wx.EXPAND,20)
self.p1_sizer.Layout()
#Create Grid Headers
field_names = [i[0] for i in self.cursor.description]
for i,a in enumerate(field_names):
self.data_grid.SetColLabelValue(i,a)
self.data_grid.AutoSizeColumns(True)
#Populate Table
#####START THREAD#########
self.thread_start()
else: #self.tbl variable is blank
self.stat = "ERROR"
self.msg = "ERROR: No table exists in MysqL for Table: " + "'" + str(self.combo_table.GetValue()) + "'"
self.updateStatus()
return
else:
self.stat = "ERROR"
self.msg = "ERROR: Table ComboBox is empty "
self.updateStatus()
return
def connect_MysqL(self):
self.db_name = 'db'
self.server = 'server'
self.user_id = 'user1'
self.pw = 'pwrd'
try:
self.db_con = MysqLdb.connect(user=self.user_id,password=self.pw,database=self.db_name,host=self.server,charset='utf8',autocommit=True)
self.cursor = self.db_con.cursor()
except:
print("Error connecting")
def close_connection(self):
try:
self.db_con.close()
except:
pass
def onCellChanged(self,evt):
self.connect_MysqL()
try:
self.key_id = str("'") + self.data_grid.GetCellValue(evt.GetRow(),0) + str("'")
self.target_col = self.data_grid.GetColLabelValue(evt.GetCol())
self.key_col = self.data_grid.GetColLabelValue(0)
self.nVal = str("'") + self.data_grid.GetCellValue(evt.GetRow(),evt.GetCol()) + str("'")
sql_update = "UPDATE " + self.tbl + " SET " + self.target_col + " = " + self.nVal + " WHERE " + self.key_col + " = " + self.key_id + ""
print(sql_update)
self.cursor.execute(sql_update)
self.stat = "UPDATE"
self.oval = evt.GetString()
self.action = "UPDATE"
self.msg = "Changed " + str("'") + self.oval + str("'") + " to " + self.nVal + " for " + self.key_id + " in table: " + str("'") + self.tbl + str("'")
self.updateStatus()
except:
self.stat = "ERROR"
self.msg = "ERROR: Failed to update sql table. " + "'" + self.tbl + "'"
self.updateStatus()
self.db_con.rollback()
self.close_connection()
def onInsertRecordBelow(self,evt):
self.key_id = str("'") + self.data_grid.GetCellValue(evt.GetRow(),0) + str("'")
self.target_col = "" #self.data_grid.GetColLabelValue(evt.GetCol())
self.key_col = self.data_grid.GetColLabelValue(0)
self.del_row = evt.GetRow()
dlg = wx.TextEntryDialog(self.p,'Enter a new Key ID to insert into the ' + str("'") + self.data_grid.GetColLabelValue(0) + str("'") + ' column.','Insert New Record')
#dlg.SetValue("Default")
if dlg.ShowModal() == wx.ID_OK:
#print('You entered: %s\n' % dlg.GetValue())
val = dlg.GetValue()
#Check if it exists in database
self.connect_MysqL()
checkRec = ("SELECT " + str(self.key_col) + "," + " COUNT(*) FROM " + str(self.tbl) + " WHERE " + str(self.key_col) + " = " + "'" + str(val)
+ "'" + " GROUP BY " + str(self.key_col) + "")
self.cursor.execute(checkRec)
results = self.cursor.fetchall()
row_count = self.cursor.rowcount
if row_count > 0:
print("Exists")
self.stat = "ERROR"
self.msg = "ERROR: INSERT Failed. " + "'" +str(val) + "'" + " already exists in table: " + "'" + self.tbl + "'." + " Abort."
self.close_connection()
self.updateStatus()
return
else:
try:
self.connect_MysqL()
sql_update = ("INSERT INTO " + str(self.tbl) + "(" + self.key_col + ")" + "VALUES (" + str("'") + str(val) + str("'") + ")")
self.cursor.execute(sql_update)
#Append row to Grid
lRow = int(self.df_data.shape[0])
lCol = int(self.df_data.shape[1])
self.data_grid.InsertRows(lRow,1)
self.data_grid.SetCellValue(lRow,str(val))
#Insert into Dataframe
self.df_data.append(pd.Series(dtype='object'),ignore_index=True)
#Update status
self.key_id = val
self.stat = "INSERT"
self.msg = "INSERTED record " + "'" + str(val) + "'" + " into table: " + "'" + self.tbl + "'"
self.action = "INSERT"
self.nVal = ""
self.oval = ""
except:
self.db_con.rollback()
self.stat = "ERROR"
self.msg = "ERROR: Failed to INSERT record '" + str(val) + "'into table: " + "'" + self.tbl + "'"
else:
print("ABORTED")
self.close_connection()
self.updateStatus()
dlg.Destroy
def onDeleteRecord(self,evt):
#Connect
self.connect_MysqL()
#Delete from MysqL table
try:
self.nVal = ""
sql_delete = "DELETE FROM " + self.tbl + " WHERE " + self.key_col + " = " + self.key_id + ""
print (sql_delete)
self.cursor.execute(sql_delete)
self.db_con.commit()
self.stat = "DELETE"
self.oval = ""
self.action = "DELETE"
self.msg = "Deleted Record ID: " + self.key_id + " from " + str("'") + self.tbl + str("'")
#Delete from Grid
self.data_grid.DeleteRows(self.del_row,True)
except:
self.stat = "ERROR"
self.msg = "ERROR: Failed to Delete record from table: " + "'" + self.tbl + "'"
self.db_con.rollback()
self.close_connection()
self.updateStatus()
if __name__ == "__main__":
app = wx.App(False)
MainFrame(None).Show() # MainFrame().Show()
app.MainLoop()
解决方法
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