class Comment(models.Model):   
    user = models.ForeignKey(User)
    comment = models.TextField()
    timestamp = models.DateTimeField(auto_now_add=True)
    class Meta:
        ordering = ("-timestamp",)
    app_label = models.CharField(max_length=20)
    id_of = models.PositiveIntegerField(max_length=10)
    rating_value = models.IntegerField(max_length=4)

def get_last_comments(count=3):
    from comments.models import Comment
    last_comments = Comment.objects.order_by('-id')[:count]
    return last_comments

<h4>Последние коментарии</h4>
                                        {% if last_comments %}
                                        {% for comment in last_comments %}
                                            <div class="comment">
                                                    <img src="/static/images/trash/face.jpg" width="42" height="42" alt="" />
                                                    <h6>{{ comment.user }}</h6>
                                                    {{ comment.timestamp|date:"H:i" }} | {{ comment.timestamp|date:"d.m.Y" }}
                                                    <p>
                                                            {{ comment.comment }}
                                                    </p>
                                                    <a class="more_info rounded2" href="#">Подробнее</a>
                                            </div>
                                        {% endfor %}
                                        {% endif %}