def delete_book(book_id):
book = session.query(Book).get(book_id)
session.delete(book)
session.commit()
return redirect(url_for('index'))
def delete_customer(c_id):
customer = session.query(Customer).get(c_id)
session.delete(customer)
session.commit()
return redirect(url_for('customers'))
def delete_author(author_id):
author = session.query(Author).get(author_id)
session.delete(author)
session.commit()
return redirect(url_for('index'))
def delete_target(tgt_id):
target = session.query(Target).get(tgt_id)
session.delete(target)
session.commit()
return redirect(url_for('index'))
