测开之路一百三十四：实现指定查找功能

实现指定查找功能

与list共用一个视图函数，修改一下sql

@app.route("/list/")
def list():
    """ 展示所有问题 """
    sql = "select ROWID,* from feedback order by ROWID DESC"
    # feedbacks = query_sql(sql)
    # print(feedbacks)
    key = request.args.get('key', '')
    sql = 'select f.ROWID,f.*,c.CategoryName from feedback f INNER JOIN category c on c.ROWID = f.CategoryID where f.Subjeck like ? order by f.ROWID'
    feedbacks = query_sql(sql, (f'%{key}%',))
    return render_template('feedback-list.html', items=feedbacks)

feedback-list.html，之前的渲染逻辑不变，新增一个panel

搜索看一下

无条件搜索的时候，默认展示所有内容

视图

# coding:utf-8
import sqlite3
from datetime import datetime
from flask import Flask, request, render_template, redirect, url_for, g

app = Flask(__name__)

DATABASE = r'.dbfeedbach.db'

'=======================封装sql助手函数============================='


def make_dicts(cursor, row):
    """ 将游标获取的Tuple根据数据库列表转换为dict """
    return dict((cursor.description[idx][0], value) for idx, value in enumerate(row))


def get_db():
    """ 获取(简历数据库链接)
    g: flask内置的变量：g = LocalProxy(partial(_lookup_app_object, "g"))
    """
    db = getattr(g, '_database', None)
    if not db:
        db = g._database = sqlite3.connect(DATABASE)
        db.row_factory = make_dicts
    return db


def execute_sql(sql, params=()):
    """ 执行sql语句不返回数据结果 insert、update、delete """
    c = get_db().cursor()
    c.execute(sql, params)
    c.connection.commit()


def query_sql(sql, params=(), one=False):
    """ 查询数据 one=False的时候返回多条"""
    c = get_db().cursor()
    result = c.execute(sql, params).fetchall()
    c.close()
    return (result[0] if result else None) if one else result


@app.teardown_appcontext  # 在当前app上下文销毁时执行
def close_connection(exeption):
    """ 关闭数据库 """
    db = getattr(g, '_database', None)
    if db is not None:
        db.close()


'========================================================================'


@app.route("/")
def index():
    return render_template('base.html')


# 模板继承
@app.route("/feedback/")
def feedback():
    return render_template('post.html')


@app.route("/post_feedback/", methods=["POST"])
def post_feedback():
    """ 提交视图 """
    if request.method == 'POST':  # 如果是post请求就获取表单值
        subject = request.form.get('subject', None)
        categoryid = request.form.get('category', 1)
        username = request.form.get('username')
        email = request.form.get('email')
        body = request.form.get('body')
        release_time = str(datetime.now())
        state = 0
        print(subject, categoryid, username, email, body, state, release_time)
        conn = sqlite3.connect(DATABASE)
        c = conn.cursor()
        # 防止sql注入，用？代替值
        sql = "insert into feedback (Subjeck, CategoryID, UserName, Email, Body, State, ReleaseTime) values (?,?,?,?,?,?,?)"
        c.execute(sql, (subject, categoryid, username, email, body, state, release_time))
        conn.commit()
        conn.close()
        # 为防止因卡顿引起重复提交，提交过后跳转到填写页面
        return redirect(url_for('feedback'))


@app.route("/list/")
def list():
    """ 展示所有问题 """
    sql = "select ROWID,* from feedback order by ROWID DESC"
    # feedbacks = query_sql(sql)
    # print(feedbacks)
    key = request.args.get('key', '')
    sql = 'select f.ROWID,f.*,c.CategoryName from feedback f INNER JOIN category c on c.ROWID = f.CategoryID where f.Subjeck like ? order by f.ROWID'
    feedbacks = query_sql(sql, (f'%{key}%',))
    return render_template('feedback-list.html', items=feedbacks)


@app.route('/del/<id>/')
def delete_feedback(id=0):
    """ 删除问题 ，前端传id"""
    conn = sqlite3.connect(DATABASE)
    c = conn.cursor()
    sql = "delete from feedback where ROWID = ?"
    c.execute(sql, (id,))
    conn.commit()
    conn.close()
    return redirect(url_for('list'))


# 编辑功能
@app.route("/edit/<id>/")
def edit(id=None):
    """ 根据前端传过来的id返回编辑的html """
    # 获取绑定的下拉列表
    sql = "select ROWID,CategoryName from category"
    categories = query_sql(sql)
    # 获取当前id的信息，并绑定至form表单，以备修改
    sql = "select rowid,* from feedback where rowid = ?"
    curren_feedback = query_sql(sql, (id,), True)
    # return str(curren_feedback)  # 查看查出来的数据顺序，方便html渲染排序
    return render_template('edit.html', categories=categories, item=curren_feedback)


@app.route("/save_edit/", methods=['POST'])
def save_edit():
    """ 保存编辑 """
    if request.method == 'POST':
        id = request.form.get('rowid', None)
        reply = request.form.get('reply')
        state = 1 if request.form.get('state', 0) == 'on' else 0
        sql = 'update feedback set Reply=?, State=? where rowid=?'
        conn = sqlite3.connect(DATABASE)
        c = conn.cursor()
        c.execute(sql, (reply, state, id))
        conn.commit()
        conn.close()
    return redirect(url_for('list'))


if __name__ == '__main__':
    app.run(
        debug=True
    )

html

{% extends 'base.html'%}

{% block main_content %}
    <div class="row">
        <!--增加搜索的入口-->
        <div class="panel panel-default">
            <div class="panel-heading">
                <form action="#" class="form-inline">
                    <input type="text" class="form-control" name="key" id="key">
                    <input type="submit" class="btn btn-default" value="点击搜索">
                </form>
            </div>
            <!--把之前的表格移到panel-body里面-->
            <div class="panel-body">
                <table class="table table-hover">
            <tr>
                <th>ID</th>
                <th>主题</th>
                <th>分类</th>
                <th>用户</th>
                <th>邮箱</th>
                <th>处理状态</th>
                <th>提交时间</th>
                <th>操作</th>
            </tr>
            {% for item in items %}
                <tr>
                    <td>{{ loop.index }}</td><!--jinja模板提供的遍历序号功能-->
                    <td>{{ item.Subjeck }}</td><!--jinja模板提供的字典取值功能-->
                    <td>{{ item.get('CategoryID', 0) }}</td><!--python自带的字典取值功能-->
                    <td>{{ item['UserName'] }}</td><!--python自带的字典取值功能-->
                    <td>{{ item['Email'] }}</td>
                    <td><span class="label label-{{ 'danger' if item['State'] ==0 else 'success' }}">{{ "未处理" if item['State'] ==0 else "已处理" }}</span></td>
                    <td>{{ item['ReleaseTime'] }}</td>
                    <td>
                        <a href="#" class="btn btn-success">查看</a>
                        <a href="{{ url_for('edit', id=item['rowid']) }}" class="btn btn-default">编辑</a>
                        <a href="{{ url_for('delete_feedback', id=item['rowid']) }}" class="btn btn-danger">删除</a>
                    </td>
                </tr>
            {% endfor %}
        </table>
            </div>
        </div>
    </div>

{% endblock %}