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

    py文件:

    from sqlalchemy import or_
    
    @app.route("/search")
    def search():
        q=request.args.get("q")
        tg=Tougao.query.filter(
            or_(
                Tougao.title.contains(q),
                Tougao.content.contains(q)
            )
        ).order_by("-time")
        return render_template("index.html",touGao=tg)

    html(base):

            <form class="navbar-form navbar-right" role="search" action="{{ url_for("search") }}" method="get">
    
                <div class="form-group">
                    <input type="text" class="form-control" name="q" placeholder="Search">
                </div>
                <button type="submit" class="btn btn-default">
                    搜索
                </button>
            </form>
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  • 原文地址:https://www.cnblogs.com/Naiky/p/8075300.html
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