实现搜索功能

Posted 2020-10-18 黄向薇

1.准备视图函数search()

@app.route(\'/search/\')
def search():

 

2.修改base.html 中搜索输入框所在的

     a.<form action="{{ url_for(\'search\') }}" method="get">

     b. <input name="q" type="text" placeholder="请输入关键字">

        <form action="{{ url_for(\'search\') }}" method="get">
            <li><input name =\'q\' type="text"  placeholder="请输入您要搜索的关键字...">
            <button type="submit"></button></li>
         </form>

 

3.完成视图函数search()

    a.获取搜索关键字
       q = request.args.get(\'q’)

    b.条件查询
       qu = Question.query.filter(Question.title.contains(q)).order_by(\'-creat_time’)

    c.加载查询结果：
       return render_template(\'index.html\', question=qu）

@app.route(\'/search/\')
def search():
    qu=request.args.get(\'q\')
    ques = Question.query.filter(Question.title.contains(qu)).order_by(\'-creat_time\')
    return render_template("base.html",questions=ques)

 

4.组合条件查询

    from sqlalchemy import or_, and_ 

ques = Question.query.filter(or_(Question.title.contains(qu), Question.detail.contains(qu))).order_by(\'-creat_time\')