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">
        <form action="{{ url_for('search')}}" method="get" class="navbar-form navbar-left">
            <input name="q" type="text" name="title" required lay-verify="required" placeholder="请输入搜索内容" autocomplete="off"
                   class="layui-input">
        

          



    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)
        @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('base.html',questions=ques)
        

          



    4. 组合条件查询
      from sqlalchemy import or_, and_
      from sqlalchemy import or_
      ques = Question.query.filter(
              or_(
              Question.title.contains(qu),
              Question.detail.contains(qu)
              )
          )
      

        

    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

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  • 原文地址:https://www.cnblogs.com/Sun584125503/p/8064034.html
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