实现搜索功能

from sqlalchemy import or_,and_
@app.route('/search/')
def search():
    qu = request.args.get('q')
    ques =  Question.query.filter(

        or_(
             Question.title.contains(qu),
            Question.detail.contains(qu)
        ))
    return render_template('switch.html',wenda = ques)

<form action="{{ url_for('search') }}"method="get">
   <input name="q" type="text" placeholder="请输入关键字">
    <button type="submit">搜索</button>
</form>