-- models.py

POST_CHOICES = (
    ('p', 'post'),
    ('v', 'video'),
    ('i', 'image'),
    ('q', 'quote'),
)


class Post(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    modified_at = models.DateTimeField(auto_now=True, db_index=True)
    title = models.CharField(max_length=255)
    slug = models.SlugField()

    post_type = models.CharField(max_length=1, choices=POST_CHOICES, default='p')

    body = HTMLField() # models.TextField(blank=True, help_text="The body of the Post / Quote")
    embed_code = models.TextField(blank=True, help_text="The embed code for video")
    image_url = models.URLField(blank=True, help_text="Image src")
    author = models.CharField(blank=True, max_length=255, help_text="Author name")

    def get_absolute_url(self):
        return reverse('post', kwargs={"slug": self.slug})

    def __unicode__(self):
        return unicode(self.title)


-- views.py

from django.http import HttpResponseRedirect
from django.views.generic import DetailView
from blog.forms import CommentForm


class PostDetailView(DetailView):
    methods = ['get', 'post']

    def get(self, request, *args, **kwargs):
        self.object = self.get_object()
        form = CommentForm(object=self.object)
        context = self.get_context_data(object=self.object, form=form)
        return self.render_to_response(context)

    def post(self, request, *args, **kwargs):
        self.object = self.get_object()
        form = CommentForm(object=self.object, data=request.POST)

        if form.is_valid():
            form.save()
            return HttpResponseRedirect(self.object.get_absolute_url())

        context = self.get_context_data(object=self.object, form=form)
        return self.render_to_response(context)

-- urls.py

from django.conf.urls import patterns, include, url
from django.views.generic import ListView, DetailView
from blog.models import Post
from blog.views import PostDetailView

urlpatterns = patterns('',
    url(r'^$', ListView.as_view(
        queryset=Post.objects.all(),
        context_object_name="posts_list"),
        name="home"
    ),
    url(r'^post/(?P<slug>[a-zA-Z0-9-]+)/$', PostDetailView.as_view(
        queryset=Post.objects.all(),
        context_object_name="post"),
        name="post"
    ),
)


-- post_list.html

{% extends "base.html" %}

{% block content %}
    {% for post in posts_list %}
      <h2><a href="{% url post slug=post.slug %}">{{ post.title }}</a></h2>
      {% if post.post_type == 'p' %}
        {{ post.body|safe|truncatewords:20 }}
      {% endif %}
      {% if post.post_type == 'v' %}
        {{ post.embed_code|safe }}
      {% endif %}
      {% if post.post_type == 'i' %}
        <p><img src="{{ post.image_url }}" /><p>
      {% endif %}
      {% if post.post_type == 'q' %}
        <blockquote>{{ post.body|safe|truncatewords:20 }}</blockquote>
        <p>{{ post.author }}</p>
      {% endif %}
      <p>
        {{ post.created_at }} |
        {% with total=post.comment_set.all|length %}
            {{ total }} comment{{ total|pluralize }}
        {% endwith %}
      </p>
    {% endfor %}
{% endblock %}