蟒蛇。 mysql.connector。缺少从数据库中显示列表框中的数据
我在tkinter中没有在listbox中显示数据时遇到问题。控制台不会显示任何错误。在我看来，与数据库的第二次连接是一个问题。第一个连接在ConfigurationPage中，第二个连接在DeletePage中。在HomePage中我可以向数据库添加新行，文本框显示添加结果，但在deletePage中列表框有问题。我希望你知道什么是不正确的。为了方便我放置应用程序工作的一些截图
ConfigurationPage
主页
删除页面
代码：
__author__ = 'Goldsmitd'
import mysql.connector
import tkinter as tk
from tkinter import ttk
class AdressBookApp(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
self.container = tk.Frame(self)
self.container.pack(side='top')
#creating menu
menubar = tk.Menu(self.container, bg='grey')
filemenu = tk.Menu(menubar, tearoff=0)
filemenu.add_command(label="Save settings")
filemenu.add_separator()
filemenu.add_command(label="Exit", command=quit)
menubar.add_cascade(label="File", menu=filemenu)
optmenu = tk.Menu(menubar, tearoff=0)
optmenu.add_command(label='Configuration',
command=lambda: self.show_frame(ConfigurationPage))
menubar.add_cascade(label='Options', menu=optmenu)
tk.Tk.config(self, menu=menubar)
#creating windows
self.frames ={}
for F in (HomePage, ConfigurationPage, DeletePage):
frame = F(self.container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky='nsew')
#displaying start page
self.show_frame(ConfigurationPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class ConfigurationPage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
self.userL = ttk.Label(self, text='user name:')
self.passL = ttk.Label(self, text='password:')
self.hostL = ttk.Label(self, text='host:')
self.dataL = ttk.Label(self, text='databse:')
self.userL.grid(row=0, column=0, pady=5, padx=5)
self.passL.grid(row=1, column=0, pady=5, padx=5)
self.hostL.grid(row=2, column=0, pady=5, padx=5)
self.dataL.grid(row=3, column=0, pady=5, padx=5)
self.userE = ttk.Entry(self)
self.passE = ttk.Entry(self)
self.hostE = ttk.Entry(self)
self.dataE = ttk.Entry(self)
self.userE.grid(row=0, column=1, pady=5, padx=5)
self.passE.grid(row=1, column=1, pady=5, padx=5)
self.hostE.grid(row=2, column=1, pady=5, padx=5)
self.dataE.grid(row=3, column=1, pady=5, padx=5)
self.userE.insert(0, 'root')
self.passE.insert(0, '')
self.hostE.insert(0, 'localhost')
self.dataE.insert(0, 'people')
#default connection to database
self.connect_base('root','','localhost','people')
#CREATING BUTTONS
self.connB = ttk.Button(self, text='connect',
command=lambda: self.connect_base(self.userE.get(),
self.passE.get(),
self.hostE.get(),
self.dataE.get()))
self.cleaB = ttk.Button(self, text='clear',
command=self.clear_click)
self.closB = ttk.Button(self, text='close',
command=lambda: controller.show_frame(HomePage))
self.connB.grid(row=4, column=0, pady=5, padx=5)
self.cleaB.grid(row=4, column=1, pady=5, padx=5)
self.closB.grid(row=4, column=2, pady=5, padx=5)
def connect_base(self,inUser,inPass,inHost,inData):
self.cnx = mysql.connector.connect(user=inUser, password=inPass, host=inHost, database=inData)
self.cursor = self.cnx.cursor()
def clear_click(self):
self.userE.delete(0,'end')
self.passE.delete(0,'end')
self.hostE.delete(0,'end')
self.dataE.delete(0,'end')
class HomePage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
#Eempty label
self.emptyL = ttk.Label(self)
self.emptyL.grid(column=0, row=0)
# creating widgets
self.gnameL = ttk.Label(self, text='given name:')
self.gnameE = ttk.Entry(self, width=30)
self.gnameL.grid(column=0, row=1, pady=5, padx=5)
self.gnameE.grid(column=1, row=1, pady=5, padx=5, columnspan=2)
self.snameL = ttk.Label(self, text='surname:')
self.snameE = ttk.Entry(self, width=30)
self.snameL.grid(column=0, row=2, pady=5, padx=5)
self.snameE.grid(column=1, row=2, pady=5, padx=5, columnspan=2)
self.adressL = ttk.Label(self, text='adress:')
self.adressE = ttk.Entry(self, width=30)
self.adressL.grid(column=0, row=3, pady=5, padx=5)
self.adressE.grid(column=1, row=3, pady=5, padx=5, columnspan=2)
self.mobileL = ttk.Label(self, text='mobile:')
self.mobileE = ttk.Entry(self, width=30)
self.mobileL.grid(column=0, row=4, pady=5, padx=5)
self.mobileE.grid(column=1, row=4, pady=5, padx=5, columnspan=2)
self.emailL = ttk.Label(self, text='email:')
self.emailE = ttk.Entry(self, width=30)
self.emailL.grid(column=0, row=5, pady=5, padx=5)
self.emailE.grid(column=1, row=5, pady=5, padx=5, columnspan=2)
#creating BUTTONS
self.addB = ttk.Button(self, text='add',
command=lambda: self.add_click(controller.frames[ConfigurationPage],
self.gnameE.get(),
self.snameE.get(),
self.adressE.get(),
self.mobileE.get(),
self.emailE.get()))
self.deleteB = ttk.Button(self, text='delete',
command=lambda: app.show_frame(DeletePage))
self.clearB = ttk.Button(self, text='clear',
command=self.clear_click)
self.addB.grid(column=0, row=6, padx=5, pady=5)
self.deleteB.grid(column=1, row=6, padx=5, pady=5)
self.clearB.grid(column=2,row=6, padx=5, pady=5, sticky='w')
#creating OUTPUT
self.o1T = tk.Text(self, width=50, height=10,padx=5,pady=5, relief='ridge')
self.o1T.grid(column=4, row=1,columnspan=3, rowspan = 5)
#creating commands
def add_click(self, vessel, name1, name2, name3, name4, name5):
vessel.cursor.execute('ALTER TABLE book MODIFY `id` INT(11) NOT NULL AUTO_INCREMENT')
vessel.cursor.execute("INSERT INTO book (gname, surname, adress, mobile, email) VALUES ('%s', '%s', '%s', '%s', '%s')"\
% (name1, name2, name3, name4, name5))
vessel.cnx.commit()
vessel.cursor.execute('SELECT id, gname, surname, adress, mobile, email FROM book')
for (id, gname, surname, adress, mobile, email) in vessel.cursor:
self.o1T.insert(tk.INSERT, '\n' + '%d, %s, %s, %s, %s, %s' %(id, gname, surname, adress, mobile, email))
self.o1T.tag_configure("center", justify='center')
self.o1T.tag_add("center", 1.0, "end")
vessel.cursor.close()
vessel.cnx.close()
def clear_click(self):
self.gnameE.delete(0,'end')
self.snameE.delete(0,'end')
self.adressE.delete(0,'end')
self.mobileE.delete(0,'end')
self.emailE.delete(0,'end')
class DeletePage(tk.Frame):
def __init__(self, parent, controller):
tk.Frame.__init__(self, parent)
#LISTBOX
self.lix = tk.Listbox(self, width=100)
self.lix.grid(rowspan=6)
for (id, gname, surname, adress, mobile, email) in controller.frames[ConfigurationPage].cursor:
self.lix.insert('end', ('%d || %s || %s || %s || %s || %s') % (id, gname, surname, adress, mobile, email))
#CREATING BUTTONS
self.okB = ttk.Button(self,text='OK',
command=lambda controller=controller:self.ok_click(controller.frames[ConfigurationPage]))
self.closeB = ttk.Button(self, text='close',
command=lambda controller=controller: self.cl_click(controller))
self.okB.grid(row=1, column=1)
self.closeB.grid(row=2, column=1)
#deleting seleceted row
def ok_click(self,vessel):
self.value = self.lix.get(self.lix.curselection()) #getting strings from selected line in istbox
self.valist = self.value.split() # converting it to list of words
self.vind = self.valist[0] # getting index
vessel.cursor.execute('DELETE FROM book WHERE id=%s' % (self.vind))
vessel.cnx.commit()
self.lix.delete('anchor')
#closing deletePage
def cl_click(self,vessel):
vessel.frames[ConfigurationPage].cursor.close()
vessel.frames[ConfigurationPage].cnx.close()
vessel.show_frame(HomePage)
app = AdressBookApp()
app.mainloop()
0 个答案:
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