zoukankan      html  css  js  c++  java
  • 实现搜索功能

    1. 准备视图函数search()
    2. 修改base.html 中搜索输入框所在的
      1. <form action="{{ url_for('search') }}" method="get">
      2.    <input name="q" type="text" placeholder="请输入关键字">

    3. 完成视图函数search()
      1. 获取搜索关键字
        q = request.args.get('q’)
      2. 条件查询
        qu = Question.query.filter(Question.title.contains(q)).order_by('-creat_time’)
      3. 加载查询结果:
        return render_template('index.html', question=qu)

    4. 组合条件查询
      from sqlalchemy import or_, and_

    示例:

    Lobby.query.filter(

        or_(

            and_(

                Lobby.id == Team.lobby_id,

                LobbyPlayer.team_id == Team.id,

                LobbyPlayer.player_id == player.steamid

            ),

          and_(

                Lobby.id == spectator_table.c.lobby_id,

                spectator_table.c.player_id == player.steamid

            )

        )

    )

    https://stackoverflow.com/questions/13370993/sqlalchemy-query-and-or-issue

     <form action="{{url_for('search')}}" method="get"class="nav-form navbar-right">
                <div class="form-group" style="margin:20px" >
            <input type="text" name="q" required lay-verify="required" placeholder="请输入搜索内容" autocomplete="off" >
                    <button class="btn btn-default" style="padding-top:5px;" type="submit"><span class="glyphicon glyphicon-search" aria-hidden="true"></span>搜索</button>
           </div>
            </form>

    py

    @app.route('/search/',methods=['GET','POST'])
    def search():
        search = request.args.get('search')
        question = Ques.query.filter(
            or_(
                Ques.title.contains(search),
                Ques.detail.contains(search)
            )
    
        ).order_by('-creat_time')
    
        return render_template('lx3.html',question=question)

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  • 原文地址:https://www.cnblogs.com/1244581939cls/p/8074278.html
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