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

 

@app.route('/search/')
def search():
    qu=request.args.get('q')
    ques = Question.query.filter(
        or_(
            Question.title.contains(qu),
            Question.detail.contains(qu)
            
           )
    ).order_by('-creat_time')
    return render_template('index.html',question = ques)

@app.route('/')
def index():
    context = {
        'question':Question.query.order_by('-creat_time').all()

    }
    return render_template('index.html',**context)

from sqlalchemy import or_,and_

<form action="{{ url_for('search') }}" method="GET">
<div class="row">
    <div class="col-lg-6 offset-lg-3">
      <div class="input-group">
      <input name="q" type="text"  class="form-control touming" placeholder="搜索" aria-label="Product name">
        <span class="input-group-btn">
        <button class="btn btn-primary " type="submit">Search</button>
      </span>
    </div>
  </div>
</div></form>