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  • Django web框架开发基础-django实现留言板功能

    1.创建项目 cmd  django-admin startpoject cloudms 

    2.创建APP cmd django-admin startapp msgapp

    3.修改settings,TEMPLATES中

    TEMPLATES = [
        {
            'DIRS': [os.path.join(BASE_DIR,'msgapp/templates')],
     }

    4.编写HTML文件

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>云端留言板(1)首页</title>
    </head>
    <body>
        <h1>提交留言功能区</h1>
        <form action="/msggate/" method="post">
            {% csrf_token %}
            发送方 <input type="text" name="userA" /> <br>
            接收方 <input type="text" name="userB" /> <br>
            消息文 <input type="text" name="msg" /> <br>
            <input type="submit" value="留言提交" />
        </form>
    
        <h1>获取留言功能区</h1>
        <form action="/msggate/" method="get">
            接收方<input type="text" name="userC" /> <br>
            <input type="submit" value="留言获取">
        </form>
        <table border="1">
            <thead>
                <th>留言时间</th>
                <th>留言来源</th>
                <th>留言信息</th>
                <th>我的留言</th>
            </thead>
            <br>
            <tbody>
                {% for line in data %}
                <tr>
                    <td>{{ line.time }}</td>
                    <td align="center">{{ line.userA }}</td>
                    <td>{{ line.msg }}</td>
                    <td>{{ line.userB }}</td>
                </tr>
                {% endfor %}
            </tbody>
        </table>
    </body>
    </html>

    5.编写views文件

    from django.shortcuts import render
    
    # Create your views here.
    
    from django.shortcuts import render
    from datetime import datetime
    
    
    def msgproc(requset):
        datalist = []
        if requset.method == 'POST':
            userA = requset.POST.get('userA',None)
            userB = requset.POST.get('userB',None)
            msg = requset.POST.get('msg',None)
            time = datetime.now()
            with open('msgdata.txt','a+') as f:
                f.write('{}--{}--{}--{}--
    '.format(userB,userA,
                                                    msg,time.strftime('%Y-%m-%d %H:%M:%S')))
        if requset.method == 'GET':
            userC = requset.GET.get('userC',None)
            if userC != None:
                with open('msgdata.txt','r') as f:
                    cnt = 0
                    for line in f:
                        linedata =line.split('--')
                        if linedata[0] == userC:
                            cnt = cnt + 1
                            d = {'userA':linedata[1],'msg':linedata[2],
                                 'time':linedata[3],'userB':linedata[0]}
                            datalist.append(d)
                        if cnt >= 10:
                            break
        return render(requset,'MsgSingleWeb.html',{'data':datalist})

    6.配置本地路由:新增urls

    from django.urls import path
    from . import views
    
    urlpatterns = [
        path('', views.msgproc),
    ]

    7.配置全局路由:

    from django.contrib import admin
    from django.urls import path,include
    
    urlpatterns = [
        path('admin/', admin.site.urls),
        path('msggate/',include('msgapp.urls'))
    ]

    8.启动项目:cmd python manage.py runserver 0:8080

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  • 原文地址:https://www.cnblogs.com/ssxsy/p/9096550.html
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