Django-员工操作
Published in：2020-08-25 |

Django实现用户登陆,注册,以及session会话强制登陆,以及对员工的信息的增加,删除,修改操作

新增中间件,上传头像,验证码 ,分页显示

Django员工操作

Django实现用户登陆,注册,以及session会话强制登陆,以及对员工的信息的增加,删除,修改操作

新增中间件,上传头像,验证码 ,分页显示

views

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import os, uuid

from django.db import transaction
from django.http import HttpResponse
from django.shortcuts import render, redirect
from work.models import User, Staff
import random, string
from captcha.image import ImageCaptcha
from django.core.paginator import Paginator


# 主页面
def emplist(request):
    return redirect("work:emplist_logic")  # 存在session,返回员
# 登陆页面
def login(request):
    return render(request, "work/login.html")  # 密码错误.返回登陆页面重新登陆

# 注册页面
def regist(request):
    return render(request, "work/regist.html")

# 添加员工页面
def addEmp(request):
    return render(request, "work/addEmp.html")
# 修改员工页面
def updateEmp(request):
    # 填写获取的该员工信息
    id = request.GET.get('id')
    staff = Staff.objects.get(pk=id)
    return render(request, "work/updateEmp.html", {"staff": staff})
# 登陆逻辑
def login_logic(request):
    username = request.POST.get("name")
    userpwd = request.POST.get("pwd")
    res = User.objects.filter(username=username, userpwd=userpwd)
    if res:
        request.session['is_login'] = True  # 登陆正确设置及session会话
        return redirect("work:emplist")  # 重定向到员工页面
    return redirect("work:login")  # 密码错误,返回登陆页面重新登陆

# 随机码
def getCaptacha(request):
    image = ImageCaptcha()
    code = random.sample(string.ascii_lowercase + string.ascii_uppercase + string.digits, 4)
    random_code = ''.join(code)
    request.session['code'] = random_code
    data = image.generate(random_code)
    return HttpResponse(data, "image/png")

# 注册逻辑
def regist_logic(request):
    username = request.POST.get("username")
    name = request.POST.get("name")
    userpwd = request.POST.get("pwd")
    sex = request.POST.get("sex")
    # 获取输入的验证码
    captcha = request.POST.get('captcha')
    code = request.session.get('code')
    if code.lower() == captcha.lower():
        res = User.objects.filter(username=username)  # 获取数据库是否拥有用户名
        if res:
            return HttpResponse("用户已存在")
        with transaction.atomic():
            User.objects.create(username=username, name=name, userpwd=userpwd, sex=sex)
            return redirect("work:login")
    else:
        return HttpResponse('注册失败')

# 添加员工逻辑
def addEmp_logic(request):
    # 判断是否存在session,不存在强制返回登陆界面
    res = request.session.get('is_login')
    if res:
        return redirect("work:emplist_logic")  # 存在session,返回员工页面
    name = request.POST.get('name')
    salary = request.POST.get('salary')
    age = request.POST.get('age')
    # 获取上传的头像
    pic = request.FILES.get('head_pic')
    ext = os.path.splitext(pic.name)[1]  # 获取后缀
    head_pic = str(uuid.uuid4()) + ext  # 拼接后缀名
    pic.name = head_pic
    with transaction.atomic():
        Staff.objects.create(name=name, salary=salary, age=age, pic=pic)
    return redirect("work:emplist_logic")


# 修改数据逻辑
def updateEmp_logic(request):
    # 根据修改页面的该员工的id
    id = request.GET.get('id')
    print(id)
    staff = Staff.objects.get(pk=id)
    # 获取到提交的修改数据
    name = request.POST.get('name')
    salary = request.POST.get('salary')
    age = request.POST.get('age')
    # 修改图片
    pic = request.FILES.get('head_pic')
    ext = os.path.splitext(pic.name)[1]  # 获取后缀
    head_pic = str(uuid.uuid4()) + ext  # 拼接后缀名
    pic.name = head_pic
    # 进行员工的信息修改
    with transaction.atomic():
        staff.name = name
        staff.salary = salary
        staff.age = age
        staff.pic = pic
        staff.save()
    return redirect("work:emplist")


# 删除员工
def delete_logic(request):
    with transaction.atomic():
        id = request.GET.get('id')
        staff = Staff.objects.filter(pk=id)
        staff.delete()
    return redirect('work:emplist')


# 主页逻辑
def emplist_logic(request):
    # 分页需要导包Paginator
    num =request.GET.get('num',1)
    paginator = Paginator(Staff.objects.all(), per_page=3)   #每页显示3条数据
    page = paginator.page(num) #构建页面对象

    return render(request, 'work/emplist.html', {"page": page})

MyMiddleware 中间件

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# _*_coding:UTF-8 _*_
from django.shortcuts import redirect, render
from django.utils.deprecation import MiddlewareMixin

class MyMiddleware(MiddlewareMixin):  # 自定义的中间件
    def __init__(self, get_response):  # 初始化
        super().__init__(get_response)
        print("中间件已经初始化完毕")

    # view处理请求前执行
    def process_request(self, request):  # 某一个view
        if 'login' not in request.path:
            is_login = request.session.get('is_login')
            if is_login:
                pass
            elif 'regist' in request.path:
                pass
            elif "getCaptacha" in request.path:
                pass
            else:
                return render(request,'work/login.html')
  
    # 在process_request之后View之前执行
    def process_view(self, request, view_func, view_args, view_kwargs):
        print("view:", request, view_func, view_args, view_kwargs)

    # view执行之后，响应之前执行
    def process_response(self, request, response):
        print("response:", request, response)
        return response  # 必须返回response

    # 如果View中抛出了异常
    def process_exception(self, request, ex):  # View中出现异常时执行
        print("exception:", request, ex)

models

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pic = models.ImageField(upload_to='pic')

emplist.html

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{% load static %}
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>emplist</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <link rel="stylesheet" type="text/css" href="/static/work/css/style.css"/>
</head>
<body>
<div id="wrap">
    <div id="top_content">
        <div id="header">
            <div id="rightheader">
                <p>
                    2009/11/20
                    <br/>
                </p>
            </div>
            <div id="topheader">
                <h1 id="title">
                    <a href="#">main</a>
                </h1>
            </div>
            <div id="navigation">
            </div>
        </div>
        <div id="content">
            <p id="whereami">
            </p>
            <h1>
                Welcome!
            </h1>
            <table class="table">
                <tr class="table_header">
                    <td>
                        ID
                    </td>
                    <td>
                        Name
                    </td>
                    <td>
                        Salary
                    </td>
                    <td>
                        Age
                    </td>
                    <td>
                        head_pic
                    </td>
                    <td>
                        Operation
                    </td>
                </tr>
                {% for i in page.object_list %}
                    {% if forloop.counter|divisibleby:2 %}
                        <tr class="row1" style="background-color: #ffffff">
                            <td>
                                {{ forloop.counter }}
                            </td>
                            <td>
                                {{ i.name }}
                            </td>
                            <td>
                                {{ i.salary }}
                            </td>
                            <td>
                                {{ i.age }}
                            </td>
                            <td>
                                <img src="{% static i.pic.url %}" alt="图片加载失败" height="70px">
                            </td>
                            <td>
                                <a href="{% url "work:delete_logic" %}?id={{ i.id }}">delete emp</a>&nbsp;<a
                                    href="{% url "work:updateemp" %}?id={{ i.id }}">update emp</a>
                            </td>

                        </tr>
                    {% else %}
                        <tr class="row2" style="background-color: #eeeeee">
                            <td>
                                {{ forloop.counter }}
                            </td>
                            <td>
                                {{ i.name }}
                            </td>
                            <td>
                                {{ i.salary }}
                            </td>
                            <td>
                                {{ i.age }}
                            </td>
                            <td>
                                <img src="{% static i.pic.url %}" alt="图片加载失败" height="70px">
                            </td>
                            <td>
                                <a href="{% url "work:delete_logic" %}?id={{ i.id }}">delete emp</a>&nbsp;<a
                                    href="{% url "work:updateemp" %}?id={{ i.id }}">update emp</a>
                            </td>

                        </tr>
                    {% endif %}
                {% endfor %}
            </table>
            {% if page.has_previous %}
                <a href="{% url 'work:emplist_logic' %}?num={{ page.previous_page_number }}"> 上一页</a>
            {% endif %}

            {% for foo in page.paginator.page_range %}
                <a href="{% url 'work:emplist_logic' %}?num={{ foo }}">
                    {% if foo == page.number %}
                        <span class="b">{{ foo }}</span>
                    {% else %}
                        <span class="a">{{ foo }}</span>
                    {% endif %}
                </a>
            {% endfor %}
            {% if page.has_next %}
                <a href="{% url 'work:emplist_logic' %}?num={{ page.next_page_number }}"> 下一页</a>
            {% endif %}
            {% if not page.paginator.num_pages == page.number %}
                <a href="{% url 'work:emplist_logic' %}?num={{ page.paginator.num_pages }}">尾页</a>
            {% endif %}

            <form action="{% url 'work:emplist_logic' %}" method="get">
                输入页号<input type="text" name="num">
                <input type="submit" value="跳转">
                <p>
                    <input type="button" class="button" value="Add Employee"
                           onclick="location='{% url "work:addemp" %}'"/>
                </p>

            </form>
        </div>
    </div>
    <div id="footer">
        <div id="footer_bg">
            ABC@126.com
        </div>
    </div>
</div>
</body>
</html>

regist.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
   <head>
      <title>regist</title>
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <link rel="stylesheet" type="text/css" href="/static/work/css/style.css" />
        <script>
            function f() {
                var img = document.getElementById('img1')
                img.src = "{% url 'work:getCaptacha' %}?"+new Date().getTime()
            }
        </script>
   </head>
   <body>
      <div id="wrap">
         <div id="top_content">
               <div id="header">
                  <div id="rightheader">
                     <p>
                        2009/11/20
                        <br />
                     </p>
                  </div>
                  <div id="topheader">
                     <h1 id="title">
                        <a href="#">main</a>
                     </h1>
                  </div>
                  <div id="navigation">
                  </div>
               </div>
            <div id="content">
               <p id="whereami">
               </p>
               <h1>
                  注册
               </h1>
               <form action="{% url "work:regist_logic" %}" method="post">
                        {% csrf_token %}
                  <table cellpadding="0" cellspacing="0" border="0"
                     class="form_table">
                     <tr>
                        <td valign="middle" align="right">
                           用户名:
                        </td>
                        <td valign="middle" align="left">
                           <input type="text" class="inputgri" name="username" />
                        </td>
                     </tr>
                     <tr>
                        <td valign="middle" align="right">
                           真实姓名:
                        </td>
                        <td valign="middle" align="left">
                           <input type="text" class="inputgri" name="name" />
                        </td>
                     </tr>
                     <tr>
                        <td valign="middle" align="right">
                           密码:
                        </td>
                        <td valign="middle" align="left">
                           <input type="password" class="inputgri" name="pwd" />
                        </td>
                     </tr>
                     <tr>
                        <td valign="middle" align="right">
                           性别:
                        </td>
                        <td valign="middle" align="left">
                           男
                           <input type="radio" class="inputgri" name="sex" value="m" checked="checked"/>
                           女
                           <input type="radio" class="inputgri" name="sex" value="f"/>
                        </td>
                     </tr>
                     
                     <tr>
                        <td valign="middle" align="right">
                           验证码:
                           <img id="img1" src="{% url 'work:getCaptacha' %}" width="70px"/>
                           <a href="javascript:void(0)" onclick="f()">换一张</a>
                        </td>
                        <td valign="middle" align="left">
                           <input type="text" class="inputgri" name="captcha" />
                        </td>
                     </tr>
                  </table>
                  <p>
                     <input type="submit" class="button" value="Submit &raquo;" />
                  </p>
               </form>
            </div>
         </div>
         <div id="footer">
            <div id="footer_bg">
            ABC@126.com
            </div>
         </div>
      </div>

   </body>
</html>

updateEmp.html

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<tr>
    <td valign="middle" align="right">
        head_pic:
    </td>
    <td valign="middle" align="left">
        <img src="{% static staff.pic.url%}" alt="图片加载失败" height="70px">
        <input type="file" name="head_pic">
    </td>
</tr>
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