89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
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import sqlite3
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class UserDatabase:
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def __init__(self, db_file):
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"""Initialize the UserDatabase with a connection to the SQLite database."""
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self.conn = sqlite3.connect(db_file)
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def add_user(self, user):
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"""Add a new user to the users table and return the new user's id."""
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sql = "INSERT INTO users (name, email) VALUES (?, ?)"
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try:
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c = self.conn.cursor()
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c.execute(sql, user)
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self.conn.commit()
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return c.lastrowid
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except sqlite3.Error as e:
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print(e)
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return None
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def get_user_by_id(self, user_id):
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"""Retrieve a user by their ID."""
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sql = "SELECT * FROM users WHERE id = ?"
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try:
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c = self.conn.cursor()
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c.execute(sql, (user_id,))
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return c.fetchone()
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except sqlite3.Error as e:
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print(e)
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return None
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def update_user(self, user_id, user_data):
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"""Update a user's information."""
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sql = "UPDATE users SET name = ?, email = ? WHERE id = ?"
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try:
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c = self.conn.cursor()
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c.execute(sql, (*user_data, user_id))
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self.conn.commit()
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except sqlite3.Error as e:
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print(e)
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def delete_user(self, user_id):
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"""Delete a user by their ID."""
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sql = "DELETE FROM users WHERE id = ?"
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try:
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c = self.conn.cursor()
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c.execute(sql, (user_id,))
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self.conn.commit()
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except sqlite3.Error as e:
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print(e)
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def get_all_users(self):
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"""Retrieve all users."""
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sql = "SELECT * FROM users"
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try:
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c = self.conn.cursor()
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c.execute(sql)
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return c.fetchall()
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except sqlite3.Error as e:
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print(e)
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return []
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def main():
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database = "db/shop.db"
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user_db = UserDatabase(database)
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# delete all users
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for user in user_db.get_all_users():
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user_db.delete_user(user[0])
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users = [("Michael", "michael@mail.com"),
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("Klöara", "klara@mail.com"),
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("Arman", "arman@mail.com")]
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for user in users:
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user_id = user_db.add_user(user)
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user = user_db.get_user_by_id(1)
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print(f"Retrieved user: {user}")
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user_db.update_user(2, ("Klara", "klara@mail.com"))
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users = user_db.get_all_users()
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for user in users:
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print(user)
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if __name__ == "__main__":
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main()
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