关于django写的简易登录注册系统 涵盖增删改查

# pycharm 创建django项目

# 创建app 注册app 
python manage.py startapp app名

# 更改语言和时区
LANGUAGE_CODE = 'zh-hans'
TIME_ZONE = 'Asia/Shanghai'
USE_TZ = False

以上基础设置不过多赘述

Django基于MTV框架设计分别是models template views

一：设计用户模型

class User(models.Model):

    gender = (
        ('male', "男"),
        ('female', "女"),
    )

    name = models.CharField(max_length=128, unique=True)
    password = models.CharField(max_length=256)
    email = models.EmailField(unique=True)
    sex = models.CharField(max_length=32, choices=gender, default="男")
    c_time = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.name

    class Meta:
        ordering = ["-c_time"]
        verbose_name = "用户"
        verbose_name_plural = "用户"

固定写法 更改相应字段即可实现更多功能

# 创建数据库表
python manage.py makemigrations

# 更新数据库
python manage.py migrate

数据模型如有改动 务必执行上面两条命令！

在应用的admin.py中注册模型类

from . import models
admin.site.register(models.User)

# 创建超级账号
python manage.py createsuperuser

这样在后台就可以看到我们创建的模型

下面的为Django帮我们自动生成的

二：设计路由from login import views #导入试视图

urlpatterns = [
    path('admin/', admin.site.urls),
    path('index/', views.index),
    path('login/', views.login),
    path('register/', views.register),
    path('logout/', views.logout),
    path('myquery/', views.myquery),
    path('mydelete/', views.mydelete),
    path('mymodify/', views.mymodify),
]

path参数一url路径，参数二为对应的视图函数

三：设计视图

# 导入重定向模块

from django.shortcuts import redirect

# 导入写入的模型

from . import models

def login(request):
    if request.method == "POST":
        username = request.POST.get('username')
        password = request.POST.get('password')
        message = '请检查填写的内容！'
        if username.strip() and password:
            # 验证合法性保证不为空
            # print(username, password)
            try:
                user = models.User.objects.get(name=username)
            except:
                message = '用户不存在！'
                return render(request, 'login/login.html', locals())
            # print(user.password)
            if user.password == password: # 对比密码
                return redirect('/index/')
            else:
                message = '密码不正确！'
                return render(request, 'login/login.html', locals())
        else:
            return render(request, 'login/login.html', locals())
    return render(request, 'login/login.html')

def register(request):
    if request.method == "POST":
        username = request.POST.get('username')
        password1 = request.POST.get('password1')
        password2 = request.POST.get('password2')
        email = request.POST.get('email')
        sex = request.POST.get('sex')
        message = '请检查填写的内容！'
        if password1 != password2:
            message = '两次输入的密码不同！'
            return render(request, 'login/register.html', locals())
        else:
            same_name_user = models.User.objects.filter(name=username)
            if same_name_user:
                message = '用户名已经存在'
                return render(request, 'login/register.html', locals())
            same_email_user = models.User.objects.filter(email=email)
            if same_email_user:
                message = '该邮箱已经被注册了！'
                return render(request, 'login/register.html', locals())
            new_user = models.User()
            new_user.name = username
            new_user.password = password1
            new_user.email = email
            new_user.sex = sex
            new_user.save()

            return redirect('/login/')
    else:
        return render(request, 'login/register.html', locals())

def myquery(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        # message = '请检查填写的内容！'
        try:
            user = models.User.objects.get(name=username)
        except:
            message = '用户不存在！'
            return render(request, 'login/myquery.html', locals())
        username = user.name
        password = user.password
        email = user.email
        sex = user.sex
        message = '查询成功'
        # print(models.User.username, models.User.password, models.User.email, models.User.sex)
        return render(request, 'login/myquery.html', locals())
    else:
        return render(request, 'login/myquery.html', locals())

def mydelete(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        try:
            user = models.User.objects.get(name=username)
        except:
            message = '用户不存在！'
            return render(request, 'login/mydelete.html', locals())
        user.delete()
        message = '删除成功'
        return render(request, 'login/mydelete.html', locals())
    else:
        return render(request, 'login/mydelete.html', locals())

def mymodify(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        email = request.POST.get('email')
        sex = request.POST.get('sex')
        try:
            user = models.User.objects.get(name=username)
        except:
            message = '用户不存在'
            return render(request, 'login/mymodify.html', locals())
        user = models.User.objects.get(id=user.id)
        user.name = username
        user.password = password
        user.email = email
        user.sex = sex
        user.save()
        username = user.name
        password = user.password
        email = user.email
        sex = user.sex
        message = '修改成功'
        return render(request, 'login/mymodify.html', locals())
    else:
        return render(request, 'login/mymodify.html', locals())

render 接收request作为第一个参数 渲染第二个模板参数 固定写法
locals()函数传递函数内部变量至模板

四：编写模板

<form action="/login/" method="post">
    {% if message %}
        <div class="alert alert-warning">{{ message }}</div>
    {% endif %}
    {% csrf_token %}
    <label for="id_username">用户名：</label>
    <input type="text" id="id_username" name="username">
    <label for="id_username">密码：</label>
    <input type="password" id="id_password" name="password">
    <input type="submit" value="登录">
</form>

<form action="/register/" method="post">
    {% if message %}
        <div class="alert alert-warning">{{ message }}</div>
    {% endif %}
    {% csrf_token %}
    <label for="id_username">用户名：</label>
    <input type="text" id="id_username" name="username">
    <label for="id_username1">密码：</label>
    <input type="password" id="id_password1" name="password1">
    <label for="id_username2">确认密码：</label>
    <input type="password" id="id_password2" name="password2">
    <label for="id_email">邮箱：</label>
    <input type="email" id="id_email" name="email">
    <label for="id_sex">性别：</label>
    <select name="sex" id="id_sex">
        <option value="male">男</option>
        <option value="female">女</option>
    </select>
    <input type="submit" value="注册">
</form>

<form action="/myquery/" method="post">
    {% if message %}
        <div class="alert alert-warning">{{ message }}</div>
    {% endif %}
    {% csrf_token %}
    <label for="id_username">用户名：</label>
    <input type="text" id="id_username" name="username" value="{{ username }}">
    <label for="id_password">密码：</label>
    <label type="password" id="id_password" name="password">{{ password }}</label>
    <label for="id_email">邮箱：</label>
    <label type="email" id="id_email" name="email">{{ email }}</label>
    <label for="id_sex">性别：</label>
    <label type="text" id="id_sex" name="sex">{{ sex }}</label>
    <input type="submit" value="查询">
</form>

<form action="/mymodify/" method="post">
    {% if message %}
        <div class="alert alert-warning">{{ message }}</div>
    {% endif %}
    {% csrf_token %}
    <label for="id_username">用户名：</label>
    <input type="text" id="id_username" name="username" value="{{ username }}">
    <label for="id_password">密码：</label>
    <input type="text" id="id_password" name="password" value="{{ password }}">
    <label for="id_email">邮箱：</label>
    <input type="email" id="id_email" name="email" value="{{ email }}">
    <label for="id_sex">性别：</label>
    <select name="sex" id="id_sex">
        <option value="male">男</option>
        <option value="female">女</option>
    </select>
    <input type="submit" value="修改">
</form>

<form action="/mydelete/" method="post">
    {% if message %}
        <div class="alert alert-warning">{{ message }}</div>
    {% endif %}
    {% csrf_token %}
    <label for="id_username">用户名：</label>
    <input type="text" id="id_username" name="username" value="{{ username }}">
    <input type="submit" value="删除">
</form>

Django基本的用户注册系统 增删改查 更多基础细节不过多赘述