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

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

 

posted @ 2017-12-20 20:18  003蒋宇翔  阅读(103)  评论(0编辑  收藏  举报