联通用户管理系统（一）

#联通用户管理系统（一）
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1.新建项目

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如果你是windows的话，界面应该是如下的：

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2.创建app

python manage.py startapp app01

一般情况下：我们是在pycharm的终端中运行上述指令，但是pychrm中为我们提供了工具，点击工具，找到并点击Run manage.py Task，便打开了manage.py窗口，相当于pychrm为我们运行了manage.py。我们直接输入startapp app01 便可以出创建app了。

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如果你是windows电脑，界面如下：

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注册app：将我们创建的app注册到setting.py中

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3.设计表结构（django）

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from django.db import modelsclass 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)

4.在MySQL中生成表

工具连接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,}
}

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django命令生成数据库表

python manage.py makemigrations
python manage.py migrate

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如果你在测试连接数据库的过程中出现错误，可以先检查settings.py文件中MYSQL数据库的配置是否正确。

表结构创建成功：

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5.静态文件管理

static目录

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6.部门管理

我们先用最原始的方式来做，之后我们再用dgango组件

Django中提供Form和ModelForm组件（方便）

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在还没有创建新建部门的功能时，为了数据是否能够显示，可以进行如下操作：

通过Dgano Shell插入数据

在Dgango项目的根目录下，打开终端，使用命令进入Django Shell:

python manage.py shell

然后运行以下代码插入部门数据：

from app01.models import Department
# 创建部门数据
Department.objects.creat(title="人事部")
Department.objects.creat(title="技术部")
Department.objects.creat(title="财务部")

这会将部门数据插入到department表中。

models.py

from django.db import models# 部门管理
class Department(models.Model):"""部门表"""#id = models.BigAutoField(verbose_name="ID", primary_key=True)title = models.CharField(verbose_name="标题", max_length=32,null="True",blank="True")class UsrInfo(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", default=0)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")# #无约束的# depart_id = models.BigIntegerField(verbose_name="部门ID")#有约束# 1.—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.CASCADE)# 在django中做约束 男女gender_choices =((1, '男'),(2,'女'),)gender_choices = models.SmallIntegerField(verbose_name="性别",choices=gender_choices)

urls.py

"""
URL configuration for Employee_Management_System project.The `urlpatterns` list routes URLs to views. For more information please see:https://docs.djangoproject.com/en/5.1/topics/http/urls/
Examples:
Function views1. Add an import:  from my_app import views2. Add a URL to urlpatterns:  path('', views.home, name='home')
Class-based views1. Add an import:  from other_app.views import Home2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
Including another URLconf1. Import the include() function: from django.urls import include, path2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
"""
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),# 添加部门path('depart/add/',views.depart_add),#删除部门path('depart/delete/',views.depart_delete),# 编辑部门path('depart/<int:nid>/edit/',views.depart_edit)]

views.py

from django.shortcuts import render, redirect
from app01 import models
# Create your views here.
def depart_list(request):"""部门列表"""#却数据库中获取部门信息queryset = models.Department.objects.all()return render(request,'depart_list.html',{'queryset':queryset})def depart_add(request):"""添加部门"""if request.method == "GET":return render(request,'depart_add.html')# 获取用户通过post提交的是数据集title = request.POST.get("title")# 保存到数据库models.Department.objects.create(title=title)#重定项回部门列表return redirect("/depart/list/")def depart_delete(request):""""删除部门"""# 获取idnid = request.GET.get('nid')# 删除models.Department.objects.filter(id=nid).delete()# 跳转return redirect("/depart/list/")def depart_edit(request,nid):"""编辑部门"""if request.method == "GET":#根据nid获取数据row_object = models.Department.objects.filter(id=nid).first()return render(request,'depart_edit.html',{'row_object':row_object})#获取用户提交的标题，根据id找到数据库中的数据并进行更新models.Department.objects.filter(id=nid).update(title=request.POST.get("title"))#重新定向会部门列表return redirect("/depart/list/")

depart_list.html

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title><link rel="stylesheet" href="{%  static 'plugins/bootstrap-3.4.1/css/bootstrap.min.css' %}"><style>.navbar{border: 0;}</style>
</head>
<body><nav class="navbar navbar-default"><div class="container"><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="#">联通用户管理系统</a></div><div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"><ul class="nav navbar-nav"><li><a href="/depart/list/">部门管理</a></li><li><a href="#">Link</a></li></ul><ul class="nav navbar-nav navbar-right"><li><a href="#">登陆</a></li><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">橙子师兄 <span class="caret"></span></a><ul class="dropdown-menu"><li><a href="#">个人资料</a></li><li><a href="#">我的信息</a></li><li role="separator" class="divider"></li><li><a href="#">注销</a></li></ul></li></ul></div></div>
</nav><div><div class="container"><div style="margin-bottom: 10px"><a class="btn btn-success" href="/depart/add/" ><span class="glyphicon glyphicon-plus-sign" aria-hidden="true"></span>新建部门</a></div><div class="panel panel-default"><!-- Default panel contents --><div class="panel-heading"><span class="glyphicon glyphicon-th-list" aria-hidden="true"></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 queryset %}<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></table></div>
</div></div></div><script src="{% static 'js/jquery-3.6.0.min.js' %}"></script><script src="{%  static 'plugins/bootstrap-3.4.1/js/bootstrap.min.js' %}"></script></body>
</html>

depart_add.html

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title><link rel="stylesheet" href="{%  static 'plugins/bootstrap-3.4.1/css/bootstrap.min.css' %}"><style>.navbar{border: 0;}</style>
</head>
<body><nav class="navbar navbar-default"><div class="container"><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="#">联通用户管理系统</a></div><div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"><ul class="nav navbar-nav"><li><a href="/depart/list/">部门管理</a></li><li><a href="#">Link</a></li></ul><ul class="nav navbar-nav navbar-right"><li><a href="#">登陆</a></li><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">橙子师兄 <span class="caret"></span></a><ul class="dropdown-menu"><li><a href="#">个人资料</a></li><li><a href="#">我的信息</a></li><li role="separator" class="divider"></li><li><a href="#">注销</a></li></ul></li></ul></div></div>
</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 method="post">{% csrf_token %}<div class="form-group"><label>标题</label><input type="text" class="form-control" placeholder="标题" name="title"></div><button type="submit" class="btn btn-primary">提交</button></form></div></div></div>
</div><script src="{% static 'js/jquery-3.6.0.min.js' %}"></script><script src="{%  static 'plugins/bootstrap-3.4.1/js/bootstrap.min.js' %}"></script></body>
</html>

depart_edit.html

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title><link rel="stylesheet" href="{%  static 'plugins/bootstrap-3.4.1/css/bootstrap.min.css' %}"><style>.navbar{border: 0;}</style>
</head>
<body><nav class="navbar navbar-default"><div class="container"><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="#">联通用户管理系统</a></div><div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"><ul class="nav navbar-nav"><li><a href="/depart/list/">部门管理</a></li><li><a href="#">Link</a></li></ul><ul class="nav navbar-nav navbar-right"><li><a href="#">登陆</a></li><li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">橙子师兄 <span class="caret"></span></a><ul class="dropdown-menu"><li><a href="#">个人资料</a></li><li><a href="#">我的信息</a></li><li role="separator" class="divider"></li><li><a href="#">注销</a></li></ul></li></ul></div></div>
</nav><div><div class="container"><div class="panel panel-default"><div class="panel-heading"><h3 class="panel-title">修改部门</h3></div><div class="panel-body"><form method="post">{% csrf_token %}<div class="form-group"><label>标题</label><input type="text" class="form-control" placeholder="标题" name="title" value="{{ row_object.title }}"></div><button type="submit" class="btn btn-primary" >提交</button></form></div></div></div>
</div><script src="{% static 'js/jquery-3.6.0.min.js' %}"></script><script src="{%  static 'plugins/bootstrap-3.4.1/js/bootstrap.min.js' %}"></script></body>
</html>

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效果展示：

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7.模板的继承

部门列表
添加部门
编辑部门

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 %}

8.用户管理

insert into app01_userinfo(name,password,age,account,create_time,gender,depart_id) values("韩超","666",23,100.68,"2020-01-11",2,1);insert into app01_userinfo(name,password,age,account,create_time,gender,depart_id) values("刘东","123",23,100.68,"2010-11-11",1,4);insert into app01_userinfo(name,password,age,account,create_time,gender,depart_id) values("朱虎飞","999",33,9900.68,"2021-05-11",1,1);

+-------------+---------------+------+-----+---------+----------------+
| Field       | Type          | Null | Key | Default | Extra          |
+-------------+---------------+------+-----+---------+----------------+
| id          | bigint(20)    | NO   | PRI | NULL    | auto_increment |
| name        | varchar(16)   | NO   |     | NULL    |                |
| password    | varchar(64)   | NO   |     | NULL    |                |
| age         | int(11)       | NO   |     | NULL    |                |
| account     | decimal(10,2) | NO   |     | NULL    |                |
| create_time | datetime(6)   | NO   |     | NULL    |                |
| gender      | smallint(6)   | NO   |     | NULL    |                |
| depart_id   | bigint(20)    | NO   | MUL | NULL    |                |
+-------------+---------------+------+-----+---------+----------------+

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新建用户：

原始方式理思路：不会采用（本质）【麻烦】

- 用户提交数据没有校验。
- 错误，页面上应该有错误提示。
- 页面上，没一个字段都需要我们重新写一遍。     [OK]
- 关联的数据，手动去获取并展示循环展示在页面。  [OK]

Django组件
- Form组件（小简便）
- ModelForm组件（最简便）

8.1 初识Form

1. views.py

class MyForm(Form):user = forms.CharField(widget=forms.Input)pwd = form.CharFiled(widget=forms.Input)email = form.CharFiled(widget=forms.Input)account = form.CharFiled(widget=forms.Input)create_time = form.CharFiled(widget=forms.Input)depart = form.CharFiled(widget=forms.Input)gender = form.CharFiled(widget=forms.Input)def user_add(request):if request.method == "GET":form = MyForm()return render(request, 'user_add.html',{"form":form})

2.user_add.html

<form method="post">{% for field in form%}{{ field }}{% endfor %}<!-- <input type="text"  placeholder="姓名" name="user" /> -->
</form>

<form method="post">{{ form.user }}{{ form.pwd }}{{ form.email }}<!-- <input type="text"  placeholder="姓名" name="user" /> -->
</form>

8.3 ModelForm（推荐）

0. models.py

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")depart = models.ForeignKey(to="Department", to_field="id", on_delete=models.CASCADE)gender_choices = ((1, "男"),(2, "女"),)gender = models.SmallIntegerField(verbose_name="性别", choices=gender_choices)

1. views.py

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

2.user_add.html

<form method="post">{% for field in form%}{{ field }}{% endfor %}<!-- <input type="text"  placeholder="姓名" name="user" /> -->
</form>

<form method="post">{{ form.user }}{{ form.pwd }}{{ form.email }}<!-- <input type="text"  placeholder="姓名" name="user" /> -->
</form>