1、django初始化配置
https://blog.51cto.com/yht1990/2382898

2、创建模型
D:\mysite\polls\models.py

from django.db import models
class Publisher(models.Model):
    id = models.AutoField(primary_key=True)  # 自增的ID主键
    name = models.CharField(max_length=64, null=False)

3、建表

python manage.py makemigrations
python manage.py migrate

4、url配置
主项目url
D:\mysite\mysite\urls.py

from django.contrib import admin
from django.urls import path,include

urlpatterns = [
    path('polls/',include('polls.urls')),
    path('admin/', admin.site.urls),
]

应用项目url
D:\mysite\polls\urls.py

from django.urls import path

from . import views
 #添加命名空间
app_name = 'polls'
urlpatterns = [

    #访问列表页
    path('publisher_list/', views.published_list,name='published_list'),
        #添加数据
    path('add_publisher/', views.add_publisher,name='add_publisher'),
    #删除数据
    path('delete_publisher/', views.delete_publisher,name='delete_publisher'),
    #path('edit_publisher/', views.edit_publisher,name='edit_publisher'),
]

五、静态html（以后有列表页，数据增、改页面，删除不需要单独html页面）
列表页
D:\mysite\polls\templates\polls\publisher_list.html

    
    



添加新的出版社


        {% for publisher in publisher_list %}
            
        {% endfor %}
    

    

        

            
序号
            
ID
            
出版社名称
            
操作
        
    
    

                
{{ forloop.counter }}
                
{{ publisher.id }}
                
{{ publisher.name }}
                

                    删除
                    编辑
                
            

#静态htm数据增页面
D:\mysite\polls\templates\polls\add_publisher.html

    
    



添加出版社


    {% csrf_token %}
    
    
    
{{ error }}

#静态html改页面
D:\mysite\polls\templates\polls\edit_publisher.html

    
    



编辑出版社


    
    
    

python后端
D:\mysite\polls\views.py

from django.shortcuts import HttpResponse, render, redirect
from polls import models
from .models import Publisher

#列表页函数
def published_list(request):
    ret = Publisher.objects.all().order_by("id")
    return render(request,"polls/publisher_list.html",{"publisher_list": ret})

#添加函数
def add_publisher(request):
    error_msg = ""

        #如果是POST请求,我就取到用户填写的数据
    print(request.method)
    if request.method == "POST":
        new_name = request.POST.get("publisher_name", None)
        if new_name:
            # 通过ORM去数据库里新建一条记录
            Publisher.objects.create(name=new_name)
           #返回访问列表面，退出
            return redirect("/polls/publisher_list/")
        else:
                    #如果用户post后没有数据则设置变量
            error_msg = "出版社名字不能为空!"
     #如果是get请求访问此页面
    return render(request, "polls/add_publisher.html", {"error": error_msg})

#删除函数
def delete_publisher(request):
    print(request.GET)
    print("=" * 120)
    #1. 从GET请求的参数里面拿到将要删除的数据的ID值
    del_id = request.GET.get("id", None)  # 字典取值,娶不到默认为None
    #如果能取到id值
    if del_id:
        # 去数据库删除当前id值的数据
        #根据id值查找到数据
        del_obj = models.Publisher.objects.get(id=del_id)
        #删除
        del_obj.delete()
        #返回删除后的页面,跳转到出版社的列表页,查看删除是否成功
        return redirect("/polls/publisher_list/")
    else:
        return HttpResponse("要删除的数据不存在!")

#编辑函数
def edit_publisher(request):
    #用户修改完出版社的名字,点击提交按钮,给我发来新的出版社名字
    if request.method == "POST":
        print(request.POST)
        #取新出版社名字
        edit_id = request.POST.get("id")
        new_name = request.POST.get("publisher_name")
        #更新出版社
        #根据id取到编辑的是哪个出版社
        edit_publisher = models.Publisher.objects.get(id=edit_id)
        edit_publisher.name = new_name
        edit_publisher.save()  # 把修改提交到数据库
        #跳转出版社列表页,查看是否修改成功
        return redirect("/polls/publisher_list/")
    #从GET请求的URL中取到id参数
    edit_id = request.GET.get("id")
    if edit_id:
        #获取到当前编辑的出版社对象
        publisher_obj = models.Publisher.objects.get(id=edit_id)
        return render(request, "polls/edit_publisher.html", {"publisher": publisher_obj})
    else:
        return HttpResponse("编辑的出版社不存在!")

访问列表页
http://127.0.0.1:8000/polls/publisher_list/

访问添加页
http://127.0.0.1:8000/polls/add_publisher/

访问编辑页
http://127.0.0.1:8000/polls/edit_publisher/?id=7