# coding:utf8
from __future__ import unicode_literals

from django.db import models

# Create your models here.
class Catagory(models.Model):
 """
 博客分类
 """
 name = models.CharField('名称',max_length=30)

 def __unicode__(self):
  return self.name

class Tag(models.Model):
 """
 博客标签
 """
 name = models.CharField('名称',max_length=16)

 def __unicode__(self):
  return self.name

class Blog(models.Model):
 """
 博客
 """
 title = models.CharField('标题',max_length=32)
 author = models.CharField('作者',max_length=16)
 content = models.TextField('博客正文')
 created = models.DateTimeField('发布时间',auto_now_add=True)
 catagory = models.ForeignKey(Catagory,verbose_name='分类')
 tags = models.ManyToManyField(Tag,verbose_name='标签')

 def __unicode__(self):
  return self.title

class Comment(models.Model):
 """
 评论
 """
 blog = models.ForeignKey(Blog,verbose_name='博客')
 name = models.CharField('称呼',max_length=16)
 email = models.EmailField('邮箱')
 content = models.CharField('内容',max_length=240)
 created = models.DateTimeField('发布时间',auto_now_add=True)

 def __unicode__(self):
  return self.content

# Database
# https://docs.djangoproject.com/en/1.9/ref/settings/#databases

DATABASES = {
 'default': {
  'ENGINE': 'django.db.backends.sqlite3',
  'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
 }
}

python manage.py makemigrations
python manage.py migrate

# coding:utf8
from django.contrib import admin

# Register your models here.
from Blog.models import *
# 注册的目的就是为了让系统管理员能对注册的这些模型进行管理
admin.site.register([Catagory,Tag,Blog])

"""MyDjango2 URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
 https://docs.djangoproject.com/en/1.9/topics/http/urls/
Examples:
Function views
 1. Add an import: from my_app import views
 2. Add a URL to urlpatterns: url(r'^$', views.home, name='home')
Class-based views
 1. Add an import: from other_app.views import Home
 2. Add a URL to urlpatterns: url(r'^$', Home.as_view(), name='home')
Including another URLconf
 1. Import the include() function: from django.conf.urls import url, include
 2. Add a URL to urlpatterns: url(r'^blog/', include('blog.urls'))
"""
from django.conf.urls import url
from django.contrib import admin

from Blog.views import *
urlpatterns = [
 url(r'^admin/', admin.site.urls),
 url(r'^blogs/$',get_blogs),
 url(r'^detail/(\d+)/$',get_details ,name='blog_get_detail'),
]

from django.shortcuts import render,render_to_response

# Create your views here.
from Blog.models import *
from Blog.forms import CommentForm
from django.http import Http404
def get_blogs(request):
 blogs = Blog.objects.all().order_by('-created')
 return render_to_response('blog-list.html',{'blogs':blogs})

def get_details(request,blog_id):
 try:
  blog = Blog.objects.get(id=blog_id)
 except Blog.DoesNotExist:
  raise Http404
 if request.method == 'GET':
  form = CommentForm()
 else:
  form = CommentForm(request.POST)
  if form.is_valid():
   cleaned_data = form.cleaned_data
   cleaned_data['blog'] = blog
   Comment.objects.create(**cleaned_data)
 ctx = {
  'blog':blog,
  'comments':blog.comment_set.all().order_by('-created'),
  'form':form
 }
 return render(request,'blog_details.html',ctx)

 
 
 



 
My Blogs


 {% for blog in blogs %}
  

   

    
{{ blog.title }}
   
  

   {{ blog.catagory.name }}
   {{ blog.author }}
   {{ blog.created |date:"Y-m-d H:i" }}
  
  

   {{ blog.content | truncatechars:100 }}
  
  
 {% endfor %}




接下来是blog_details.html



 
 
 




 {{ blog.title }}



 

  

   
{{ blog.title }}
  
  

   {{ blog.category.name }}
   {{ blog.author }}
   {{ blog.created|date:"Y-m-d H:i" }}
  
  

   {{ blog.content }}
  
 
 

  

   
评论
   {% for comment in comments %}
    

     {{ comment.name }} 说: {{ comment.content }}
    
   {% endfor %}
  
  

   
提交评论
   

    {% csrf_token %}
    {% for field in form %}
     

      {{ field.label }}: {{ field }}
     
     

      {{ field.errors }}
     
    {% endfor %}
    提交
   
  
 

# coding:utf-8
from django import forms

"""
借此实现博客的评论功能
"""
class CommentForm(forms.Form):
 """
 评论表单用于发表博客的评论。评论表单的类并根据需求定义了三个字段：称呼、邮箱和评论内容。这样我们就能利用它来快速生成表单并验证用户的输入。
 """
 name = forms.CharField(label='称呼',max_length=16,error_messages={
  'required':'请填写您的称呼',
  'max_length':'称呼太长咯'
 })

 email = forms.EmailField(label='邮箱',error_messages={
  'required':'请填写您的邮箱',
  'invalid':'邮箱格式不正确'
 })

 content = forms.CharField(label='评论内容',error_messages={
  'required':'请填写您的评论内容！',
  'max_length':'评论内容太长咯'
 })