White learning django fifth leg - Easy Case

First, write the contents of the database configuration file in setting.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'site',
        'USER': 'user',
        'PASSWORD': '123456',
        'HOST': '127.0.0.1',
        'PORT': '3306',
    }
}

 

After writing model mapping table in the app file in models.py

from django.db import models

# Create your models here.


class BlogModle2(models.Model):
    title = models.CharField(max_length=50)　　# 标题
    content = models.TextField()　　　　　　　　# 内容

    def __str__(self):
        return f'title={self.title}, content={self.content}'

 

By pycham console input

makemigrations appname
migrate appname

 

Create a database table

After the template rendering index in views.py app written in, add, list, detail, edit the five functions

index

from django.shortcuts import render, redirect, reverse
from django.http import HttpResponse
from .models import BlogModle2
# Create your views here.


def blog_index(request):                                # 主页函数
    return render(request, 'blog/demo_index.html')    # 渲染index页面

{% extends 'blog/demo_base.html' %}

{% block title %}
    首页
{% endblock %}

{% block bodyblock %}
    <tr>
        <td><a href="{% url 'blog_add' %}">添加文章</a></td>
        <td><a href="{% url 'blog_list' %}">文章列表</a></td>
    </tr>
{% endblock %}

 

add

DEF blog_add (Request):                                   # Add a page 
    IF request.method == ' GET ' :                            # If the request is a request to get 
        return the render (Request, ' Blog / demo_add.html ' )     # Rendering page add 
    elif request.method == ' POST ' :                         # If the request for the post page 
        title = request.POST.get ( ' title ' )                  # get the form filled out form title 
        Content = request.POST.get ( 'Content ' )              # get form form filler content 
        Blog = BlogModle2 (title = title, Content = Content)      # database writes 
        blog.save ()
         return the render (Request, ' Blog / demo_add.html ' )     # rendering add page

The extends% { 'Blog / demo_base.html'%} 
{%}% Block title 
    add blog 
{% endblock%} 
{%}% Block bodyblock 
    < h1 of > add new articles </ h1 of > 
    < form Action = "" Method = " the POST " > 
        {%} {#% csrf_token attack and to prevent cross-domain request} # 
{#     < form Action =" " Method =" the GET " > {%} # csrf_token%} 
        of the title < INPUT type =" text " AutoComplete =" OFF " the above mentioned id =" title "
                 placeholder = "Please enter a title." name='title' value="{{ blog.title }}"> <br> <br><br>
        内容 <textarea name="content" id="content"
                     placeholder="请输入内容" cols="30" rows="10">{{ blog.content }}</textarea>
        <button type="submit">发布博客</button>
    </form>
{% endblock %}

 

list

DEF blog_list (Request):                                  # List page 
    blog_list BlogModle2.objects.all = ()                     # Get all the content database table 
    return the render (Request, ' Blog / demo_list.html ' , context = { ' blog_list ' : blog_list}) # pass blog_list content, rendering the page list

{% extends 'blog/demo_base.html' %}
{% block title %}
    文章列表
{% endblock %}

{% block bodyblock %}
    <h1 style="margin-left: 100px">文章列表</h1>
    <table width="400px">
        <thead style="font-size:20px">
            <tr>
                <th>标题</th>
                <th>操作</th>
            </tr>
        </thead>
    <tbody>
    {% for blog in blog_list %}
        <tr>
            <th><a href="{% url 'blog_detail' blog.id %}">{{ blog.title }}</a></th>
            <th><a href="{% url 'blog_edit' blog.id %}">编辑</a> | <a href="{% url 'blog_delete' blog.id %}">删除 </a></th>
        </tr>
    {%  endfor %}
    </tbody>
    </table>


{% endblock %}

 

detail

DEF blog_detail (Request, blog_id):                       # Details page 
    Blog = BlogModle2.objects.get (ID = blog_id)                # Get the selected piece of data in a database table header 
    return the render (Request, ' Blog / demo_detail.html ' , context = { ' Blog ' : Blog})   # rendering detail page

{% extends 'blog/demo_base.html' %}
{% block title %}
    文章详情
{% endblock %}
{% block bodyblock %}
    <h1>{{ blog.title }}</h1>
    {{ blog.content }}
{% endblock %}

 

delete

DEF blog_delete (Request, blog_id):                       # Remove Features 
    Blog = BlogModle2.objects.get (the above mentioned id = blog_id)                # get the selected piece of data in a database table titled 
    IF Blog:                                                 # If there 
        blog.delete ()                                        # delete 
        return redirect (Reverse ( ' blog_list ' ))                # returns a list of pages 
    the else :
         return HttpResponse ( ' does not exist this blog ' )

 

edit

DEF blog_edit (Request, blog_id):                     # edit 
    Blog = BlogModle2.objects.get (ID = blog_id)         # Get the selected data in the database 
    IF request.method == ' GET ' :                      # If GET request 
        return the render (Request, ' Blog /demo_add.html ' , context = { ' Blog ' : Blog})     # rendering add page, acquires the content autofill 
    elif request.method == ' the pOST ' :                   # If the request is a post 
        blog.title = request.POST.get ( 'title ' )       # title modified 
        blog.content = request.POST.get ( ' Content ' )   # content modification 
        blog.save ()
         return the redirect (Reverse ( ' blog_list ' ))        # redirected to a page list

 

urls.py

from django.urls import path, re_path
from . import views

urlpatterns = [
    path('index/', views.blog_index, name='blog_index'),
    path('add/', views.blog_add, name='blog_add'),
    path('list/', views.blog_list, name='blog_list'),
    path('detail/<blog_id>', views.blog_detail, name='blog_detail'),
    path('delete/<blog_id>', views.blog_delete, name='blog_delete'),
    path('edit/<blog_id>', views.blog_edit, name='blog_edit'),
]

 

base.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}
    
    {% endblock %}</title>
</head>
<body>
{% block bodyblock %}

{% endblock %}

</body>
</html>