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 flask import Flask, render_template, request, redirect, url_for, session
from flask_sqlalchemy import SQLAlchemy
import config
from functools import wraps
from datetime import datetime
from sqlalchemy import or_, and_

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

    </div>
    <div class="navbar-header">
            <a class="navbar-brand" href="{{ url_for('daohang') }}">首页</a>
        </div>
        <div>
        <form action="{{ url_for('search') }}"method="get"class="navbar-form navbar-left">
            <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"><span class="glyphicon glyphicon-search"aria-hidden="true">查找</span></button>
        </form>