def del_pup(): form = DelForm(request.form) if request.method == 'POST' and form.validate(): name = form.name.data pup = Puppy.query.filter_by(name='pup').first() db.session.delete(pup) db.session.commit() flash('Puppy successfully deleted from the database') return redirect(url_for('list_pup')) return render_template('delete.html', form=form)