Django——9 博客小案例的实现

Django 博客小案例的实现

主要实现博客的增删改查功能

主页index.html --> 展示添加博客和博客列表的文字，实现页面跳转
添加页add.html --> 输入文章标题和内容，并讲数据提交到数据库中
列表页list.html -->将数据库中所有博客展示到视图函数中，点击文章标题可以查看文章的详情，附带编辑和删除的功能
详情页detail.hrml --> 显示文章的标签和内容

数据库传入到模板框图

Django——9 博客小案例的实现

现在创建项目：

新建项目：django-admin startproject project_name

同步到pycharm后，设置settings

ALLOWED_HOSTS = ['*']

INSTALLED_APPS = [

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'blog'

]

TEMPLATES = [

    {

        'BACKEND': 'django.template.backends.django.DjangoTemplates',

        'DIRS': [os.path.join(BASE_DIR, 'templates')],

        'APP_DIRS': True,

        'OPTIONS': {

            'context_processors': [

                'django.template.context_processors.debug',

                'django.template.context_processors.request',

                'django.contrib.auth.context_processors.auth',

                'django.contrib.messages.context_processors.messages',

            ],

        },

    },

]

DATABASES = {

    'default': {

'ENGINE': 'django.db.backends.mysql',

'NAME': 'my_site',

'USER': 'pywjh',

'PASSWORD': 'pywjh',

'HOST': '127.0.0.1',

'PORT': ''

    }

}

配置models.py文件

from django.db import models

# Create your models here.

class Blog(models.Model):

    title = models.CharField(max_length=100)

    content = models.TextField()

    def __str__(self):

        return 'Blog<title=%s, content=%s>'%(

            self.title, self.content

        )

再配置__init__文件

import pymysql

pymysql.install_as_MySQLdb()

再新建APP python manage.py startapp blog

新建templates模板文件

Django——9 博客小案例的实现

在templates中新建文件夹blog及各个文件

Django——9 博客小案例的实现

demo_base,html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>{% block title %}

    {% endblock %}</title>

</head>

<body>

{% block bodyblock %}

{% endblock %}

</body>

</html>

demo_add.html

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

{% block title %}

    添加博客

{% endblock %}

{% block bodyblock %}

    <h1>添加新文章</h1>

    <form action="" method="POST"> {% csrf_token %}

        标题<input type="text" autocomplete="off" id="title"

                 placeholder="请输入标题" name='title'> <br> <br><br>

        内容 <textarea name="content" id="content"

                     placeholder="请输入内容" cols="30" rows="10"></textarea>

        <button type="submit">发布博客</button>

    </form>

{% endblock %}

demo_index.html

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

{% block title %}

    首页

{% endblock %}

{% block bodyblock %}

    <tr>

        <td><a href="#">添加文章</a></td>

        <td><a href="#">文章列表</a></td>

    </tr>

{% endblock %}

demo_detail.html

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

{% block title %}

    文章详情

{% endblock %}

{% block bodyblock %}

    <h1>文章标题</h1>

    文章内容

{% endblock %}

demo_list.html

{% 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>

        <tr>

            <th><a href="">文章1</a></th>

            <th><a href="">编辑</a> | <a href="">删除 </a></th>

        </tr>

        <tr>

            <th><a href="">文章2</a></th>

            <th><a href="">编辑</a> | <a href="">删除 </a></th>

        </tr>

    </tbody>

    </table>

{% endblock %}

先讲模板渲染出来，配置好urls和views

将demo_index修改

{% 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 %}

urls.py

from django.urls import path

from . import views

urlpatterns = [

    path('index/', views.index, name='blog_index'),

    path('add/', views.add, name='blog_add'),

    path('list/', views.list, name='blog_list'),

    path('detail/<blog_id>/', views.detail, name='blog_detail'),

    path('detele/<blog_id>/', views.detele, name='blog_detele'),

    path('edit/<blog_id>/', views.edit, name='blog_edit'),

]

vews.py

from django.shortcuts import render, redirect, reverse

from .models import Blog

from django.http import HttpResponse

# Create your views here.

def index(request):

    return render(request, 'blog/demo_index.html')

def add(request):

    if request.method == 'GET':

        return render(request, 'blog/demo_add.html')

    elif request.method == 'POST':

        title = request.POST.get('title')

        content = request.POST.get('content')

        Blog(title=title, content=content).save()

        return redirect(reverse('blog_add'))

    else:

        return HttpResponse('操作有误')

def list(request):

    lis = Blog.objects.all()

    return render(request, 'blog/demo_list.html', context={

        'blog_list': lis

    })

def detail(request, blog_id):

    blog = Blog.objects.filter(id=blog_id).first()

    if blog:

        return render(request, 'blog/demo_detail.html', context={

            'blog': blog

        })

    return HttpResponse('输入有误')

def detele(request, blog_id):

    blog = Blog.objects.filter(id=blog_id)

    if blog:

        blog.delete()

        return redirect(reverse('blog_list'))

    else:

        return HttpResponse('操作有误')

def edit(request, blog_id):

    blog = Blog.objects.filter(id=blog_id).first()

    if blog:

        if request.method == 'POST':

            title = request.POST.get('title')

            content = request.POST.get('content')

            Blog.objects.filter(id=blog_id).update(title=title, content=content)

            return redirect(reverse('blog_add'))

        return render(request, 'blog/demo_edit.html', context={

            'blog': blog

        })

    return HttpResponse('操作异常')

demo_index.html

{% 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 %}

demo_add.html

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

{% block title %}

    添加博客

{% endblock %}

{% block bodyblock %}

    <h1>添加新文章</h1>

    <form action="" method="POST"> {% csrf_token %}

        标题<input type="text" autocomplete="off" id="title"

                 placeholder="请输入标题" name='title' value="{{ blog.title }}"><a style="margin-left: 63px;" href="{% url 'blog_list' %}">博客查阅</a> <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 %}

demo_list.html

{% 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>

    <h4 style="margin-left: 222px"><a href="{% url 'blog_add' %}"> 撰写博客</a></h4>

        {% 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_detele' blog.id %}">删除 </a></th>

            </tr>

        {% endfor %}

    </tbody>

    </table>

{% endblock %}

demo_detail.html

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

{% block title %}

    文章详情

{% endblock %}

{% block bodyblock %}

    <h1>{{ blog.title }}</h1>

    {{ blog.content }}

{% endblock %}

demo_edit.html

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

{% block title %}

    添加博客

{% endblock %}

{% block bodyblock %}

    <h1>添加新文章</h1>

    <form action="" method="POST"> {% csrf_token %}

        标题<input type="text" autocomplete="off" id="title"

                 placeholder="请输入标题" 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 %}

效果：

Django——9 博客小案例的实现

点击文章列表

Django——9 博客小案例的实现

点击撰写博客

Django——9 博客小案例的实现

点击编辑

Django——9 博客小案例的实现

点击删除

Django——9 博客小案例的实现

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Django——9 博客小案例的实现

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