Django详细教程(二) - 部门用户管理案例

文章目录

前言
一、新建项目
二、新建app
三、设计表结构
四、新建数据库
五、新建静态文件
六、部门管理
- 1.部门展示
- 2.部门添加
- 3.部门删除
- 4.部门编辑
七、模板继承
八、用户管理
- 1.辨析三种方法
- - 方法一：原始方法
  - 方法二：Form组件(简便)
  - 方法三：ModelForm组件(最简便)
- 2.用户添加(ModelForm)
- 3.数据校验错误提示
- 3.编辑用户
- 4.删除用户

前言

前一篇博客介绍了Django的一些基本操作，本篇博客将结合部门用户管理案例介绍更多的操作，包括表结构的级联、约束，重定向，模板继承，ModelForm各种操作，校验错误提示等等。

一、新建项目

新建
删除不需要的部分

二、新建app

新建：python manage.py startapp app01
如果打开了Run manage...窗口，则只需要输入后半部分：startapp app01
注册app

三、设计表结构

理清关系
代码：注意表结构的级联和约束

from django.db import models


class Department(models.Model):
    """ 部门表 """
    title = models.CharField(verbose_name='标题', max_length=32)


class UserInfo(models.Model):
    """ 员工表 """
    name = models.CharField(verbose_name="姓名", max_length=16)
    password = models.CharField(verbose_name="密码", max_length=64)
    age = models.IntegerField(verbose_name="年龄")
    account = models.DecimalField(verbose_name="账户余额", max_digits=10, decimal_places=2, default=0)
    create_time = models.DateTimeField(verbose_name="入职时间")

    # 无约束
    # depart_id = models.BigIntegerField(verbose_name="部门ID")
    # 1.有约束
    #   - to，与那张表关联
    #   - to_field，表中的那一列关联
    # 2.django自动
    #   - 写的depart
    #   - 生成数据列 depart_id
    # 3.部门表被删除
    # ### 3.1 级联删除
    depart = models.ForeignKey(to="Department", to_field="id", on_delete=models.CASCADE)
    # ### 3.2 置空
    # depart = models.ForeignKey(to="Department", to_field="id", null=True, blank=True, on_delete=models.SET_NULL)

    # 在django中做的约束
    gender_choices = (
        (1, "男"),
        (2, "女"),
    )
    gender = models.SmallIntegerField(verbose_name="性别", choices=gender_choices)

在这里插入图片描述

四、新建数据库

MySQL生成数据库

create database gx_day16 DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

修改配置文件，连接MySQL

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'gx_day16',  # 数据库名字
        'USER': 'root',
        'PASSWORD': 'root123',
        'HOST': '127.0.0.1',  # 那台机器安装了MySQL
        'PORT': 3306,
    }
}

在这里插入图片描述

django命令生成数据库表

python manage.py makemigrations
python manage.py migrate

如果打开了Run manage...窗口则只需要输入后一部分
验证表结构创建成功

五、新建静态文件

六、部门管理

1.部门展示

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
]

view

from turtle import title
from django.shortcuts import render, redirect
from qpp01.models import Department,UserInfo

# Create your views here.
def depart_list(request):
    """部门列表"""

    depart_list = Department.objects.all()

    return render(request, "depart_list.html", {"depart_list": depart_list})

depart_list.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <link rel="stylesheet" href="/static/plugins/bootstrap-3.4.1/css/bootstrap.css">
    <link rel="stylesheet" href="/static/plugins/font-awesome-4.7.0/css/font-awesome.css">

    <style>
        .navbar {
            border-radius: 0;
        }
    </style>
</head>

<body>

    <!-- 导航条, https://v3.bootcss.com/components/#navbar -->
    <nav class="navbar navbar-default">
        <div class="container">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                    data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                    <span class="sr-only">Toggle navigation</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="#">员工管理系统</a>
            </div>

            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                <ul class="nav navbar-nav">
                    <li><a href="#">部门管理</a></li>
                    <li><a href="#">部门管理</a></li>

                </ul>
                <ul class="nav navbar-nav navbar-right">
                    <li><a href="#">注册</a></li>
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
                            aria-expanded="false">poker <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li><a href="#">Action</a></li>
                            <li><a href="#">Another action</a></li>
                            <li><a href="#">Something else here</a></li>
                            <li role="separator" class="divider"></li>
                            <li><a href="#">Separated link</a></li>
                        </ul>
                    </li>
                </ul>
            </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->
    </nav>
    <!-- 新建区域 -->
    <div>
        <div class="container">
            <div style="margin-bottom: 10px">
                <a class="btn btn-primary" href="/depart/add/" target="_blank">新建部门</a>
            </div>
            <div>
                <div class="panel panel-default">
                    <!-- Default panel contents -->
                    <div class="panel-heading">
                        <span class="glyphicon glyphicon-th-list" aria-hidden="true" style="margin-right: 5px;"></span>
                        <span>部门列表</span>
                    </div>

                    <!-- Table -->
                    <table class="table table-bordered">
                        <thead>
                            <tr>
                                <th>ID</th>
                                <th>名称</th>
                                <th>操作</th>
                            </tr>
                        </thead>
                        <tbody>
                            {% for obj in depart_list %}
                            <tr>
                                <th>{{ obj.id }}</th>
                                <td>{{ obj.title }}</td> 
                                <td>
                                    <button type="button" class="btn btn-primary btn-xs">编辑</button>
                                    <button type="button" class="btn btn-danger btn-xs">删除</button>
                                </td>
                            </tr>
                            {% endfor %}
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </div>

    <script src="/static/js/jquery-3.6.1.min.js"></script>
    <script src="/static/plugins/bootstrap-3.4.1/js/bootstrap.min.js"></script>
</body>

</html>

效果

2.部门添加

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
    path('depart/add/', views.depart_add),
]

views

def depart_add(request):
    """部门添加"""
    if request.method == "GET":
        return render(request, "depart_add.html")

    # 获取用户提交的部门数据
    depart_title = request.POST.get("depart_title")

    # 保存到数据库
    Department.objects.create(title=depart_title)

    return redirect("/depart/list/")

depart_list.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <link rel="stylesheet" href="/static/plugins/bootstrap-3.4.1/css/bootstrap.css">
    <link rel="stylesheet" href="/static/plugins/font-awesome-4.7.0/css/font-awesome.css">

    <style>
        .navbar {
            border-radius: 0;
        }
    </style>

</head>

<body>
    <div>
        <!-- 导航条, https://v3.bootcss.com/components/#navbar -->
        <nav class="navbar navbar-default">
            <div class="container">
                <!-- Brand and toggle get grouped for better mobile display -->
                <div class="navbar-header">
                    <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                        data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                        <span class="sr-only">Toggle navigation</span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                    </button>
                    <a class="navbar-brand" href="#">员工管理系统</a>
                </div>

                <!-- Collect the nav links, forms, and other content for toggling -->
                <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                    <ul class="nav navbar-nav">
                        <li><a href="#">部门管理</a></li>
                        <li><a href="#">部门管理</a></li>

                    </ul>
                    <ul class="nav navbar-nav navbar-right">
                        <li><a href="#">注册</a></li>
                        <li class="dropdown">
                            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button"
                                aria-haspopup="true" aria-expanded="false">poker <span class="caret"></span></a>
                            <ul class="dropdown-menu">
                                <li><a href="#">Action</a></li>
                                <li><a href="#">Another action</a></li>
                                <li><a href="#">Something else here</a></li>
                                <li role="separator" class="divider"></li>
                                <li><a href="#">Separated link</a></li>
                            </ul>
                        </li>
                    </ul>
                </div><!-- /.navbar-collapse -->
            </div><!-- /.container-fluid -->
        </nav>
    </div>
    <div class="container">
        <div class="panel panel-default">
            <div class="panel-heading">
                <h3 class="panel-title">新建部门</h3>
            </div>
            <div class="panel-body">
                <form action="/depart/add/" method="post">
                    {% csrf_token %}
                    <div class="form-group">
                        <label>部门名称</label>
                        <input type="text" class="form-control" placeholder="部门名称" name="depart_title">
                    </div>

                    <button type="submit" class="btn btn-primary">保存</button>

                </form>
            </div>
        </div>
    </div>
</body>
</html>

效果

请添加图片描述

3.部门删除

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
    path('depart/add/', views.depart_add),
    path('depart/delete/', views.depart_delete),
]

views(注意redirect重定向)

def depart_delete(request):
    """部门删除"""

    nid = request.GET.get('nid')
    Department.objects.filter(id=nid).delete()

    # 重定向回部门列表
    return redirect("/depart/list/")

depart_list.html

<tbody>
    {% for obj in depart_list %}
    <tr>
        <th>{{ obj.id }}</th>
        <td>{{ obj.title }}</td> 
        <td>
            <a class="btn btn-primary btn-xs">编辑</a>
            <a class="btn btn-danger btn-xs" href="/depart/delete/?nid={{ obj.id }}">删除</a>
        </td>
    </tr>
    {% endfor %}
</tbody>

请添加图片描述

4.部门编辑

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
    path('depart/add/', views.depart_add),
    path('depart/delete/', views.depart_delete),
    path('depart/<int:nid>/edit/', views.depart_edit),
]

views

def depart_edit(request, nid):
    """部门编辑"""

    if request.method == "GET":
        # 根据nid,获取数据
        row_object = Department.objects.filter(id=nid).first()
        return render(request, 'depart_edit.html', {"row_object": row_object})
    
    # 如果是POST请求,保存修改
    depart_title = request.POST.get('depart_title')
    Department.objects.filter(id=nid).update(title=depart_title)

    # 重定向回部门列表
    return redirect('/depart/list/')

depart_edit.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <link rel="stylesheet" href="/static/plugins/bootstrap-3.4.1/css/bootstrap.css">
    <link rel="stylesheet" href="/static/plugins/font-awesome-4.7.0/css/font-awesome.css">

    <style>
        .navbar {
            border-radius: 0;
        }
    </style>

</head>

<body>
    <div>
        <!-- 导航条, https://v3.bootcss.com/components/#navbar -->
        <nav class="navbar navbar-default">
            <div class="container">
                <!-- Brand and toggle get grouped for better mobile display -->
                <div class="navbar-header">
                    <button type="button" class="navbar-toggle collapsed" data-toggle="collapse"
                        data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                        <span class="sr-only">Toggle navigation</span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                        <span class="icon-bar"></span>
                    </button>
                    <a class="navbar-brand" href="#">员工管理系统</a>
                </div>

                <!-- Collect the nav links, forms, and other content for toggling -->
                <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
                    <ul class="nav navbar-nav">
                        <li><a href="#">部门管理</a></li>
                        <li><a href="#">部门管理</a></li>

                    </ul>
                    <ul class="nav navbar-nav navbar-right">
                        <li><a href="#">注册</a></li>
                        <li class="dropdown">
                            <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button"
                                aria-haspopup="true" aria-expanded="false">poker <span class="caret"></span></a>
                            <ul class="dropdown-menu">
                                <li><a href="#">Action</a></li>
                                <li><a href="#">Another action</a></li>
                                <li><a href="#">Something else here</a></li>
                                <li role="separator" class="divider"></li>
                                <li><a href="#">Separated link</a></li>
                            </ul>
                        </li>
                    </ul>
                </div><!-- /.navbar-collapse -->
            </div><!-- /.container-fluid -->
        </nav>
    </div>
    <div class="container">
        <div class="panel panel-default">
            <div class="panel-heading">
                <h3 class="panel-title">编辑部门</h3>
            </div>
            <div class="panel-body">
                <form action="/depart/{{ row_object.id }}/edit/" method="post">
                    {% csrf_token %}
                    <div class="form-group">
                        <label>部门名称</label>
                        <input type="text" class="form-control" placeholder="部门名称" name="depart_title" value="{{ row_object.title }}">
                    </div>
                    <button type="submit" class="btn btn-primary">保存</button>
                </form>
            </div>

        </div>
    </div>
</body>
</html>

请添加图片描述

修改depart_list.html

<tbody>
    {% for obj in depart_list %}
    <tr>
        <th>{{ obj.id }}</th>
        <td>{{ obj.title }}</td> 
        <td>
            <a class="btn btn-primary btn-xs" href="/depart/{{ obj.id }}/edit/">编辑</a>
            <a class="btn btn-danger btn-xs" href="/depart/delete/?nid={{ obj.id }}">删除</a>
        </td>
    </tr>
    {% endfor %}
</tbody>

效果

七、模板继承

定义目版：layout.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="{% static 'plugin...min.css' %}">
    {% block css %}{% endblock %}
</head>
<body>
    <h1>标题</h1>
    <div>
        {% block content %}{% endblock %}
    </div>
    <h1>底部</h1>
    
    <script src="{% static 'js/jquery-3.6.0.min.js' %}"></script>
    {% block js %}{% endblock %}
</body>
</html>

继承母版

{% extends 'layout.html' %}

{% block css %}
	<link rel="stylesheet" href="{% static 'pluxxx.css' %}">
	<style>
		...
	</style>
{% endblock %}


{% block content %}
    <h1>首页</h1>
{% endblock %}


{% block js %}
	<script src="{% static 'js/jqxxxin.js' %}"></script>
{% endblock %}

八、用户管理

Django组件:

Form组件(简便)
ModelForm组件(最简便)

1.辨析三种方法

方法一：原始方法

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
    path('depart/add/', views.depart_add),
    path('depart/delete/', views.depart_delete),
    path('depart/<int:nid>/edit/', views.depart_edit),
    path('user/list/', views.user_list),
]

views

def user_list(request):

    # 获取所有用户列表
    user_data = UserInfo.objects.all()

    # 用 python 的语法获取数据
    """
    for obj in user_data:
        # obj.get_gender_display() 表示匹配 男/女,原始字段名为gender,obj.get_字段名称_display()
        # obj.create_time.strftime("%Y-%m-%d") 表示将时间格式转换成固定格式的字符串
        # obj.depart.title 表示获取depart_id对应的部门名称,因为我们在models中定义表时与另外一张表设置了级联关系,有外键
        print(obj.id, obj.name, obj.password, obj.age, obj.account, obj.get_gender_display(), obj.depart.title, obj.create_time.strftime("%Y-%m-%d"))
    """
    
    return render(request, "user_list.html", {"user_data": user_data})

user_list.html
注意: HTML 中获取数据的方式与 Python 中有些不同,例如:
- HTML中引入函数不能带括号, obj.get_gender_display()
- 日期类型转字符串有Django自己的格式, obj.create_time|date:“Y-m-d”

{% extends 'layout.html' %}

{% block content %}
<div class="container">
    <div style="margin-bottom: 10px">
        <a class="btn btn-primary" href="/depart/add/" target="_blank">新建用户</a>
    </div>
    <div>
        <div class="panel panel-default">
            <!-- Default panel contents -->
            <div class="panel-heading">
                <span class="glyphicon glyphicon-th-list" aria-hidden="true" style="margin-right: 5px;"></span>
                <span>用户列表</span>
            </div>

            <!-- Table -->
            <table class="table table-bordered">
                <thead>
                    <tr>
                        <th>ID</th>
                        <th>姓名</th>
                        <th>密码</th>
                        <th>年龄</th>
                        <th>性别</th>
                        <th>账户余额</th>
                        <th>入职时间</th>
                        <th>部门</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    {% for obj in user_data %}
                    <tr>
                        <th>{{ obj.id }}</th>
                        <td>{{ obj.name }}</td>
                        <td>{{ obj.password }}</td>
                        <td>{{ obj.age }}</td>
                        <td>{{ obj.get_gender_display }}</td>
                        <td>{{ obj.account }}</td>
                        <td>{{ obj.create_time|date:"Y-m-d" }}</td>
                        <td>{{ obj.depart.title }}</td>
                        <td>
                            <a class="btn btn-primary btn-xs" href="/user/{{ obj.id }}/edit/">编辑</a>
                            <a class="btn btn-danger btn-xs" href="/user/delete/?nid={{ obj.id }}">删除</a>
                        </td>
                    </tr>
                    {% endfor %}
                </tbody>
            </table>
        </div>
    </div>
</div>

{% endblock %}

不足：
- 数据校验较麻烦
- 页面没有错误提示
- 页面上每一个字段都需要重新写一遍
- 关联的数据,需要手动获取并循环展示在页面

方法二：Form组件(简便)

class MyForm(Form):
	user = forms.CharField(widget=forms.Input)
	pwd = forms.CharField(widget=forms.Input)
	email = forms.CharField(widget=forms.Input)

def user_add(request):
	if request.method == "GET":
	form = MyForm()
		return render(request, "user_add.html", {"form": form})

user_add.html

<form method="post">
	{{ form.user }}
	{{ form.pwd }}
	{{ form.email }}
</form>

或者

<form method="post">
	{% for field in form %}
		{{ field }}
	{% endfor %}
</form>

方法三：ModelForm组件(最简便)

models.py

from django.db import models

# Create your models here.
class Department(models.Model):
    """部门表"""
    title = models.CharField(max_length=32, verbose_name='标题')


class UserInfo(models.Model):
    """员工表"""
    name = models.CharField(max_length=16, verbose_name="姓名")
    password = models.CharField(max_length=64, verbose_name="密码")
    age = models.IntegerField(verbose_name="年龄")
    account = models.DecimalField(verbose_name="账户余额", max_digits=10, decimal_places=2, default=0)
    create_time = models.DateTimeField(verbose_name="入职时间")
    depart = models.ForeignKey(to="Department", to_field="id", on_delete=models.CASCADE, verbose_name="部门")
    
    gender_choices = (
        (1, "男"),
        (2, "女"),
    )
    gender = models.SmallIntegerField(choices=gender_choices,verbose_name="性别")

views

class MyForm(ModelForm):
	class Meta:
		field = ["name", "password", "age"]
 
def user_add(request):
	if request.method == "GET":
	form = MyForm()
		return render(request, "user_add.html", {"form": form})

user_add.html

<form method="post">
	{{ form.user }}
	{{ form.pwd }}
	{{ form.email }}
</form>

或者

<form method="post">
	{% for field in form %}
		{{ field }}
	{% endfor %}
</form>

2.用户添加(ModelForm)

from django.contrib import admin
from django.urls import path
from app01 import views

urlpatterns = [
    path('admin/', admin.site.urls),
    path('depart/list/', views.depart_list),
    path('depart/add/', views.depart_add),
    path('depart/delete/', views.depart_delete),
    path('depart/<int:nid>/edit/', views.depart_edit),
    path('user/list/', views.user_list),
    path('user/model/form/add/', views.user_model_form_add),
]

views

########################## ModelForm 演示 #############################

from django import forms

class UserModelForm(forms.ModelForm):

    ### 自定义数据校验
    # 例如: 用户名最小三个字符
    #name = forms.CharField(min_length=3, label="用户名")

    class Meta:
        model = UserInfo
        fields = ["name", "password", "age", "account", "create_time", "gender", "depart"]
        # 逐一控制标签的样式
        # widgets = {
        #     "name": forms.TextInput(attrs={"class": "form-control"}),
        #     "password": forms.PasswordInput(attrs={"class": "form-control"}),
        # }
        
        # 这里让日期可以手动点击鼠标选择,所以单独拎出来,加上日期插件
        widgets = {
            "create_time": forms.DateTimeInput(attrs={'class': 'form-control', 'id': 'myDate'}),
        }

    # 循环找到所有的插件,添加 "class": "form-control"
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

        for name, field in self.fields.items():
            # 可以排除指定的字段
            if name == "create_time":
                continue
            print(name, field)
            field.widget.attrs = {"class": "form-control"}


def user_model_form_add(request):
    """添加用户(ModelForm版本)"""
    if request.method == "GET": 
        form = UserModelForm()
        return render(request, "user_model_form_add.html", {"form": form})
    
    # 用户POST请求提交数据,需要进行数据校验
    form = UserModelForm(data=request.POST)
    if form.is_valid():
        print(form.cleaned_data)
        # 直接保存至数据库
        form.save()
        return redirect("/user/list/")
    
    # 校验失败(在页面上显示错误信息)
    return render(request, "user_model_form_add.html", {"form": form})

user_model_form_add.html

{% extends 'layout.html' %}

{% block content %}
<div class="container">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h3 class="panel-title">添加用户</h3>
        </div>
        <div class="panel-body">
            <form action="/user/model/form/add/" method="post" novalidate>
                {% csrf_token %}
                
                {% for field in form %}
                    <div class="form-group">
                        <label>{{ field.label }}: </label>
                        {{ field }}
                        <!-- 数据校验,显示错误信息 -->
                        <span style="color: red;">{{ field.errors.0 }}</span>
                    </div>
                {% endfor %}

                <button type="submit" class="btn btn-primary">保存</button>
            </form>
        </div>
    </div>
</div>

{% endblock %}
</body>
</html>

修改models.py：目的是让自动生成的部门字段不显示"对象"本身,显示对象对应的"title"

class Department(models.Model):
    """部门表"""
    title = models.CharField(max_length=32, verbose_name='标题')

    def __str__(self):
        return self.title

请添加图片描述

3.数据校验错误提示

user_model_form_add.html加入{{ field.errors.0 }}字段
修改settings.py：改为中文,目的是为了让页面提示错误信息时显示中文,否则会显示英文

#LANGUAGE_CODE = 'en-us'
LANGUAGE_CODE = 'zh-hans'

效果

3.编辑用户

path('user/<int:nid>/edit/', views.user_edit),

views

def user_edit(request, nid):
    """编辑用户"""
    
    row_obj = UserInfo.objects.filter(id=nid).first()
    
    # GET请求
    if request.method == "GET":
        form = UserModelForm(instance=row_obj)
        return render(request, "user_edit.html", {"form": form})
    
    # POST请求
    form = UserModelForm(data=request.POST, instance=row_obj)
    if form.is_valid():
        form.save()
        return redirect("/user/list/")

    return render(request, "user_edit.html", {"form": form})

user_edit.html

{% extends 'layout.html' %}

{% block content %}

<div class="container">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h3 class="panel-title">编辑用户</h3>
        </div>
        <div class="panel-body">
            <form method="post" novalidate>
                {% csrf_token %}
                
                {% for field in form %}
                    <div class="form-group">
                        <label>{{ field.label }}: </label>
                        {{ field }}
                        <!-- 数据校验,显示错误信息 -->
                        <span style="color: red;">{{ field.errors.0 }}</span>
                    </div>
                {% endfor %}

                <button type="submit" class="btn btn-primary">保存</button>
            </form>
        </div>
    </div>
</div>
{% endblock %}
</body>
</html>

只显示年月日就可以了,不应该显示时分秒，修改数据库models
效果：点击编辑

4.删除用户

path('user/<int:nid>/delete/', views.user_delete),

views

def user_delete(request, nid):
    """用户删除"""
    UserInfo.objects.filter(id=nid).delete()
    return redirect("/user/list/")

user_list.html

<td>
    <a class="btn btn-primary btn-xs" href="/user/{{ obj.id }}/edit/">编辑</a>
    <a class="btn btn-danger btn-xs" href="/user/{{ obj.id }}/delete/">删除</a>
</td>