Django开发简单的blog

本项目基于学习阶段，只是涉及简单的crud与模板变量等操作．

1.创建blog app项目:

python manage.py startapp blog,并在项目主目录的settings.py中注册该app

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'book',
    'common',
    'info',
    'blog',
]

2.创建好app后，首先创建数据库模型models.py:

from django.db import models

# Create your models here.

class Blog(models.Model):
    id = models.AutoField(primary_key=True)
    title = models.CharField(max_length=30)
    content = models.TextField(max_length=300)

并通过manage.py管理工具生成迁移文件，并映谢到数据库中.

3.在blog APP中创建templates模板文件目录并在里面创建blog目录

主要页面有：主页，列表页，添加页，编辑页，详情页与模板基类页

base.html:

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

add.html:

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

{% block title %}
    添加文章
{% endblock %}

{% block body %}
    <h1>添加文章</h1><br>
    <form action="" method="post">
    {% csrf_token %}
    标题:<input type="text" name="title"><br>
    内容:<textarea placeholder="请输入内容" name="content" cols="30" rows="10"></textarea><br>
    <button type="submit">发布文章</button>
    </form>
{% endblock %}

index.html:

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

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

{% block body %}
       <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 %}

list.html:

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

{% block title %}
    文章列表
{% endblock %}

{% block body %}
    <h1>文章列表</h1>
    <table width="400px">
        <thead>
            <tr>
                <th>标题</th>
                <th>操作</th>
            </tr>
        </thead>
        <tbody>
            {% for blog in blogs %}
                <tr>
                    <th><a href={% url 'blog_detail' blog.id %}>{{ blog.title }}</a></th>
                    <th><a href={% url 'blog_modify' blog.id %}>编辑</a>|<a href={% url 'blog_delete' blog.id %}>删除</a></th>
                </tr>
            {% endfor %}
        </tbody>
    </table>
{% endblock %}

edit.html:

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

{% block title %}
     修改文章
{% endblock %}

{% block body %}
    <h1>修改文章</h1><br>
    <form action="" method="post">
    {% csrf_token %}
    标题:<input type="text" name="title" value={{ blog.title }}><br>
    内容:<textarea placeholder="请输入内容" name="content" cols="30" rows="10">{{ blog.content }}</textarea><br>
    <button type="submit">修改</button>
    </form>
{% endblock %}

detail.html:

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

{% block title %}
    {{ blog.title }}
{% endblock %}

{% block body %}
    <h1>文章详情</h1>
    {{ blog.content }}
{% endblock %}

4.创建好模板文件后，创建相对应的urls.py:

from django.conf.urls import url
from . import views

urlpatterns = [
    url(r'^$', views.index,name='blog_index'),
    url(r'^add/$', views.add,name='blog_add'),
    url(r'^list/$', views.list,name='blog_list'),
    url(r'^detail/(?P<blog_id>\d+)$', views.detail,name='blog_detail'),
    url(r'^delete/(?P<blog_id>\d+)$', views.delete,name='blog_delete'),
    url(r'^modify/(?P<blog_id>\d+)$', views.modify,name='blog_modify'),

]

5.创建相对应的视图文件views.py:

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

def index(request):
return render(request,'blog/index.html')

def add(request):
if request.method == 'GET':
return render(request,'blog/add.html')
   elif request.method == 'POST':
#获取表单内容
title = request.POST.get('title')
      content = request.POST.get('content')
      #添加到数据库中
Blog.objects.create(title=title,content=content)
      return HttpResponse('发布成功')
   else:
return HttpResponse('这是不能处理的操作')


def list(request):
blogs = Blog.objects.all()
   return render(request,'blog/list.html',{'blogs':blogs})

def detail(request,blog_id=0):
blog = Blog.objects.get(id=blog_id)
   return render(request,'blog/detail.html',{'blog':blog})

def delete(request,blog_id=0):
blog = Blog.objects.get(id=blog_id)
   if blog:
blog.delete()
      return redirect(reverse('blog_list'))
   else:
return HttpResponse('要删除的数据不存在')

def modify(request,blog_id=0):
blog = Blog.objects.get(id=blog_id)
   if blog:
if request.method == 'GET':
return render(request, 'blog/edit.html', context={'blog': blog})
      elif request.method == 'POST':
title = request.POST.get('title')
         content = request.POST.get('content')
         blog.title = title
         blog.content = content
         blog.save()
         return HttpResponse('修改成功')
      else:
return HttpResponse('该操作无法执行')
   else:
return HttpResponse('数据不存在')

Django开发简单的blog

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