英文:
Delete from treeview in tkinter
问题
这是您要翻译的代码部分：
def delete(self):
selected_item = self.record_list.selection()
if selected_item:
item_code = self.record_list.item(selected_item)["text"]
db = sql.connect('record.db')
curs = db.cursor()
curs.execute("DELETE FROM tb_transfers WHERE code=?", (item_code,))
db.commit()
db.close()
self.record_list_refresh()
self.total_label_refresh()
self.withdraw_label_refresh()
self.deposit_label_refresh()
这部分代码是用于删除所选项目的函数，当您点击删除按钮时，它会从 SQLite 中删除相应的记录。
英文:
import tkinter as tk
from tkinter import ttk
import sqlite3 as sql
class main_window:
def __init__(self, window):
self.wind = window
self.wind.geometry('700x550')
self.wind.resizable(0, 0)
self.wind.title('Transfer Record')
self.wind.iconbitmap('icon.ico')
self.draw()
self.record_list_refresh()
def draw(self):
data_entry = tk.LabelFrame(self.wind, text= 'Data Entry', bd= 5)
data_entry.pack(padx= 2, pady= 2, anchor= 'center')
tk.Label(data_entry, text= 'Description:').grid(row= 0, column= 0)
self.description = tk.Entry(data_entry, width= 30)
self.description.grid(row= 1, column= 0, padx= 25) #Description entry
tk.Label(data_entry, text= 'Kind:').grid(row= 0, column= 1)
self.kind = ttk.Combobox(data_entry, state= 'readonly') #Combobox kind
self.kind['values'] = ('Deposit', 'Withdrawn')
self.kind.current(0)
self.kind.grid(row= 1, column= 1, padx= 25)
tk.Label(data_entry, text= 'Amount').grid(row= 0, column= 2)
self.amount = tk.Entry(data_entry)
self.amount.grid(row= 1, column= 2, padx= 25) #Amount entry
tk.Button(data_entry, text= 'Add', height= 2, width= 8, bd= 3, command= self.save).grid(row= 0, column= 3, padx= 5, pady= 4)
tk.Button(data_entry, text= 'Delete', height= 2, width= 8, bd= 3, command= self.delete).grid(row= 1, column= 3, padx= 5, pady= 4) #Save button
transfer_record = tk.LabelFrame(self.wind, text= 'Transfer Record', bd= 5)
transfer_record.pack(padx= 1, pady= 1, anchor= 'center')
self.record_list = ttk.Treeview(transfer_record, columns= ('Kind', 'Description', 'Amount'), height= 15)
self.record_list.column('#0', width= 80, anchor= 'center')
self.record_list.heading('#0', text= 'Code')
self.record_list.column('Description', width= 300, anchor= 'center')
self.record_list.heading('Description', text= 'Description')
self.record_list.column('Kind', width= 125, anchor= 'center')
self.record_list.heading('Kind', text= 'Kind')
self.record_list.column('Amount', width= 80, anchor= 'center')
self.record_list.heading('Amount', text= 'Amount')
self.record_list.pack(padx= 5,pady= 4)
self.totals = tk.LabelFrame(self.wind, text= 'TOTALS', bd= 5)
self.totals.pack(padx= 1, pady= 1, anchor= 'center')
self.label_deposit = tk.Label(self.totals, text= '')
self.label_deposit.pack(side= 'left', padx= 2, pady= 2)
self.deposit_label_refresh()
self.label_withdrawn = tk.Label(self.totals, text= '')
self.label_withdrawn.pack(side= 'left', padx= 200, pady= 2)
self.withdraw_label_refresh()
self.label_total= tk.Label(self.totals, text= '')
self.label_total.pack(side= 'left', padx= 2, pady= 2)
self.total_label_refresh()
def record_list_refresh(self):
self.description.delete(0, tk.END)
self.amount.delete(0, tk.END)
for item in self.record_list.get_children():
self.record_list.delete(item)
db = sql.connect('record.db')
curs = db.cursor()
data = curs.execute("SELECT * FROM tb_transfers")
data = data.fetchall()
for code, description, kind, amount in data:
self.record_list.insert('', tk.END, text= code, values= (description, kind, amount))
db.commit()
db.close()
def deposit_label_refresh(self):
db = sql.connect('record.db')
curs = db.cursor()
deposits = curs.execute("Select amount FROM tb_transfers WHERE kind= 'Deposit'")
deposits = list(deposits.fetchall())
deposits_list = []
for deposit in deposits:
for depo in deposit:
deposits_list.append(depo)
total_deposits = sum(deposits_list)
total_deposits = str(total_deposits)
db.commit()
db.close()
self.label_deposit.configure(text= 'Deposit: $' + total_deposits)
def withdraw_label_refresh(self):
db = sql.connect('record.db')
curs = db.cursor()
withdraws = curs.execute("Select amount FROM tb_transfers WHERE kind= 'Withdrawn'")
withdraws = list(withdraws.fetchall())
withdraws_list = []
for withdraw in withdraws:
for withd in withdraw:
withdraws_list.append(withd)
total_withdraws = sum(withdraws_list)
total_withdraws = str(total_withdraws)
db.commit()
db.close()
self.label_withdrawn.configure(text= 'TOTAL: $' + total_withdraws)
def total_label_refresh(self):
db = sql.connect('record.db')
curs = db.cursor()
deposits = curs.execute("Select amount FROM tb_transfers WHERE kind= 'Deposit'")
deposits = list(deposits.fetchall())
deposits_list = []
for deposit in deposits:
for depo in deposit:
deposits_list.append(depo)
total_deposits = sum(deposits_list)
withdraws = curs.execute("Select amount FROM tb_transfers WHERE kind= 'Withdrawn'")
withdraws = list(withdraws.fetchall())
withdraws_list = []
for withdraw in withdraws:
for withd in withdraw:
withdraws_list.append(withd)
total_withdraws = sum(withdraws_list)
total_totals = total_deposits - total_withdraws
total_totals = str(total_totals)
db.commit()
db.close()
self.label_total.configure(text= 'TOTAL: $' + total_totals)
def save(self):
db = sql.connect('record.db')
curs = db.cursor()
curs.execute("INSERT INTO tb_transfers(description, kind, amount) VALUES(?, ?, ?)", (self.description.get(), self.kind.get(), self.amount.get()))
db.commit()
db.close()
self.record_list_refresh()
self.total_label_refresh()
self.withdraw_label_refresh()
self.deposit_label_refresh()
def delete(self):
obj_main_window = main_window(tk.Tk())
obj_main_window.wind.mainloop()
the idea is delete the selected item from the sqlite when i press the delete button.
答案1
得分: 0
You can get the selected code using Treeview.focus() and Treeview.item():
def delete(self):
selected = self.record_list.focus() # item selected?
if selected:
# 获取所选项的 'code'
code = self.record_list.item(selected, "text")
# 从 sqlite 表中删除记录
db = sql.connect("record.db")
cur = db.cursor()
cur.execute("DELETE FROM tb_transfers WHERE code = ?", (code,))
db.commit()
db.close()
# 更新 GUI
self.record_list_refresh()
self.total_label_refresh()
self.withdraw_label_refresh()
self.deposit_label_refresh()
英文:
You can get the selected code using Treeview.focus() and Treevew.item():
def delete(self):
selected = self.record_list.focus() # item selected?
if selected:
# get the 'code' of selected item
code = self.record_list.item(selected, "text")
# remove record from sqlite table
db = sql.connect("record.db")
cur = db.cursor()
cur.execute("DELETE FROM tb_transfers WHERE code = ?", (code,))
db.commit()
db.close()
# update GUI
self.record_list_refresh()
self.total_label_refresh()
self.withdraw_label_refresh()
self.deposit_label_refresh()
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