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

        )

    )

)

<form action="{{ url_for('search') }}" method="get"  class="navbar-form navbar-left" role="search">
                        <div class="form-group">
                            <input name="q" type="text" class="form-control" placeholder="请输入关键字"/>
                        </div><button type="submit" class="btn btn-default">搜索</button>
                        {% endif %}
                    </form>

  

@app.route('/search/')
def search():
    qu = request.args.get('q')
    ques = Question.query.filter(
        or_
        (Question.title.contains(qu),
         Question.detail.contains(qu),
         # Question.author_id.contains(qu)
         )
    ).order_by('-create_time')
    return render_template('index.html',questions = ques)
复制代码
from sqlalchemy import or_,and_

  

posted @ 2017-12-19 19:25  042冯耀娴  阅读(107)  评论(0编辑  收藏  举报