Implement our own commenting system for simplicity

news/forms.py

@@ -0,0 +1,7 @@
+from django import forms
+import models
+
+class CommentForm(forms.ModelForm):
+    class Meta:
+        model = models.Comment
+        exclude = ('author', 'post', 'parent', 'created', 'updated')

news/models.py

@@ -1,5 +1,6 @@
 from django.db import models
 from django.contrib.auth.models import User
+from mptt.models import MPTTModel, TreeForeignKey
 
 def unique_slug(item,slug_source,slug_field):
   """Ensures a unique slug field by appending an integer counter to duplicate slugs.
@@ -49,3 +50,19 @@ class Post(models.Model):
     def save(self, *args, **kwargs):
         unique_slug(self, slug_source='title', slug_field='slug')
         super(Post, self).save(*args, **kwargs)
+
+class Comment(MPTTModel):
+    post = models.ForeignKey(Post, blank=True, null=True, related_name='comments')
+    parent = TreeForeignKey('self', blank=True, null=True, related_name='children')
+    author = models.ForeignKey(User)
+    body = models.TextField()
+    created = models.DateTimeField(editable=False, auto_now_add=True)
+    updated = models.DateTimeField(editable=False, auto_now=True)
+
+    def news_post(self):
+        if self.parent is None:
+            return self.post
+        return self.get_root().post
+
+    def __unicode__(self):
+        return self.body

news/urls.py

@@ -23,6 +23,8 @@ class NewsFeed(Feed):
 
 urlpatterns = patterns('news',
     url('^$', 'views.index'),
+    url('^comment/p/(?P<id>[0-9]+)$', 'views.comment'),
+    url('^comment/c/(?P<parent>[0-9]+)$', 'views.comment'),
     url('^feed$', NewsFeed()),
     url('^(?P<page>[0-9]+)$', 'views.index'),
     url('^(?P<slug>.*)$', 'views.view')

news/views.py

@@ -2,6 +2,10 @@ import models
 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
 from django.shortcuts import render_to_response
 from django.template import RequestContext
+from django.http import HttpResponseRedirect
+from django.core.urlresolvers import reverse
+from django.contrib.auth.decorators import login_required
+import forms
 
 def index(request, page=0):
     all_news = models.Post.objects.all()
@@ -14,4 +18,22 @@ def index(request, page=0):
 
 def view(request, slug):
     item = models.Post.objects.get(slug__exact=slug)
-    return render_to_response('news/view.html', {'item':item}, context_instance = RequestContext(request))
+    form = forms.CommentForm()
+    return render_to_response('news/view.html', {'commentForm': form, 'item':item}, context_instance = RequestContext(request))
+
+@login_required
+def comment(request, id=None, parent=None):
+    form = forms.CommentForm(request.POST)
+    if form.is_valid():
+        c = models.Comment()
+        c.author = request.user
+        c.body = form.cleaned_data['body']
+        if parent:
+            parentPost = models.Comment.objects.get(id__exact=parent)
+            c.parent = parentPost
+        elif id:
+            newsPost = models.Post.objects.get(id__exact=id)
+            c.post = newsPost
+        c.save()
+        return HttpResponseRedirect(reverse('news.views.view', kwargs={'slug': c.news_post().slug})+"#c"+str(c.id))
+

templates/news/index.html

@@ -1,7 +1,6 @@
 {% extends 'base.html' %}
 {% load static %}
 {% load markup %}
-{% load comments %}
 
 {% block title %}News{% endblock %}
 
@@ -10,10 +9,9 @@
 <h2><a href="{{post.get_absolute_url}}">{{post.title}}</a></h2>
 <div class="byline">By {{post.author}}</div>
 <div class="content">
-    {{post.body|markdown}}
+    {{post.body|truncatewords:"45"|markdown}}
 </div>
-{% get_comment_count for post as comment_count %}
-<div class="commentcount"><a href="{{post.get_absolute_url}}">{{comment_count}} comments &raquo;</a></div>
+<div class="commentcount"><a href="{{post.get_absolute_url}}">{{post.comments.all|length}} comment{{post.comments.all|length|pluralize}} &raquo;</a></div>
 {% endfor %}
 
 {% get_static_prefix as STATIC_PREFIX %}

templates/news/view.html

@@ -1,6 +1,7 @@
 {% extends 'base.html' %}
 {% load markup %}
-{% load comments %}
+{% load mptt_tags %}
+
 {% block title %}News - {{item.title}}{% endblock %}
 
 {% block content %}
@@ -9,26 +10,27 @@
 <div class="content">
     {{item.body|markdown}}
 </div>
-<div class="commentcount">{% get_comment_count for item as comment_count %}{{comment_count}} comments.</div>
 <div class="comments">
-{% if comment_count > 0 %}
 <h3>Comments</h3>
-{% get_comment_list for item as comment_list %}
-{% for comment in comment_list %}
-    <a name="c{{ comment.id }}" href="{% get_comment_permalink comment %}">#{{comment.id}}</a> by {{comment.user}}
+{% recursetree item.comments %}
+<div class="comment-tree">
+    <a name="c{{ node.id }}" href="#c{{node.id}}">#{{node.id}}</a> by {{node.author}}
     <div class="comment">
-        {{comment.comment|markdown:"safe"}}
+        {{node.body|markdown:"safe"}}
+        <form action="{% url news.views.comment parent=node.id %}" method="post">
+        {{ commentForm.as_p }}
+        {% csrf_token %}
+        <input type="submit" name="submit" value="Post">
+        </form>
     </div>
-{% endfor %}
-{% endif %}
-{% get_comment_form for item as form %}
+    {{children}}
+</div>
+{% endrecursetree %}
 <h4>Add a comment</h4>
-<form action="{% comment_form_target %}" method="post">
+<form action="{% url news.views.comment id=item.id %}" method="post">
+{{ commentForm.as_p }}
 {% csrf_token %}
-{{ form.as_p }}
 <input type="submit" name="submit" value="Post">
-<input type="submit" name="preview" value="Preview">
-<input type="hidden" name="next" value="{{post.get_absolute_url}}" />
 </form>
 </div>
 {% endblock %}