CODEWITHSUNDEEP
python-3.xtkintersqlite
ztekinos
ztekinos

Reputation: 29

how to retrieve data from SQL by entry.get() variable

I'm trying to retrieve data from SQL table by entry.get() function.

def display_1():
    global entry_1    
    x = entry_1.get()
    if x =="ball":
        objects = cursor.execute("select * from table where stuff=='ball' ") 
        for row in objects.fetchall():
            print("objects =", row[1],row[2],row[3])

I tried the code :objects = cursor.execute("select * from table where stuff==x ") but it doesn't work. I would use the x variable to retrieve data from database.

the full code is below:

import sqlite3
connection = sqlite3.connect('table.db')
cursor = connection.cursor()
connection.commit()
import tkinter as tk
def display_1():
    x = entry_1.get()
    if x =="ball":
        objects = cursor.execute("select * from table where stuff=='ball' ")
        for row in objects.fetchall():
            print("objects =", row[1],row[2],row[3])
root = tk.Tk()
entry_1 = tk.Entry(root)
btn_1 = tk.Button(root, text = "Display Text", command = display_1)
entry_1.grid(row = 0, column = 0)
btn_1.grid(row = 1, column = 0)
root.mainloop()

Upvotes: 1

Views: 173

Answers (1)

Mike - SMT
Mike - SMT

Reputation: 15226

Update: Based on your comments I have changed the function to work directly with the entry field. I used a try/except statement to handle a failed query.

Try this:

import sqlite3
import tkinter as tk


connection = sqlite3.connect('table.db')
cursor = connection.cursor()
connection.commit()

root = tk.Tk()

entry_1 = tk.Entry(root)

def display_1():
    try:
        # changed this to follow the safer example in the duplicate post.
        objects = cursor.execute("select * from table where stuff=?",(entry_1.get(),))
        for row in objects.fetchall():
            print("objects = {}".format((row[1], row[2], row[3])))
    except:
        print("query failed.")

btn_1 = tk.Button(root, text="Display Text", command=display_1)
entry_1.grid(row=0, column=0)
btn_1.grid(row=1, column=0)

root.mainloop()

Upvotes: 1

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