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backend.py
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backend.py
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import sqlite3
def connect():
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("CREATE TABLE IF NOT EXISTS book (id INTEGER PRIMARY KEY, title TEXT, author TEXT, year integer, isbn integer) ")
conn.commit()
conn.close()
def view():
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("SELECt * FROM book")
rows = cur.fetchall()
conn.close()
return rows
def insert(title, author, year, isbn):
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("INSERT INTO book VALUES (NULL,?,?,?,?)",(title, author, year, isbn))
conn.commit()
conn.close()
def search(title="", author="" , year="" , isbn=""):
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("SELECT * FROM book WHERE title = ? or author=? or year = ? or isbn = ?",(title, author, year, isbn))
rows = cur.fetchall()
conn.close()
return rows
def delete(id):
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("DELETE FROM book WHERE id=?",(id,))
conn.commit()
conn.close()
def update(id, title, author,year, isbn):
conn = sqlite3.connect("books.db")
cur = conn.cursor()
cur.execute("UPDATE book SET title=?, author=?, year=?, isbn=? WHERE id=?",(title,author, year, isbn, id))
conn.commit()
conn.close()
connect()