Django cannot create or render comments

Question

Hi have this structure to handle users posts and comments

my post model is

 from django.db import models
    from django.contrib.auth.models import User


    class Post(models.Model):


       user = models.ForeignKey(User, on_delete=models.CASCADE, default=0)


       profile = models.ForeignKey('users.Profiles', on_delete=models.CASCADE, null=True, default=1, blank=True)
       title = models.CharField(max_length=100, blank=True, null=True)
       desc = models.CharField(max_length=1000, blank=True, null=True)

       photo = models.ImageField(upload_to='posts/photos')

       created = models.DateTimeField(auto_now_add=True)
       modified = models.DateTimeField(auto_now=True)


       def __str__(self):
            return '{} by {}'.format(self.title ,self.user)

and my comment model

   from django.db import models

    from posts.models import Post as Post
    from django.contrib.auth.models import User

    class Comment(models.Model):
        post = models.ForeignKey(Post,on_delete=models.CASCADE, null=True, default=1, blank=True)
        name = models.CharField(max_length=20,blank=True, null=True)
        email = models.EmailField(max_length=20,blank=True, null=True)
        body = models.TextField(max_length=200,blank=True, null=True)
        created = models.DateTimeField(auto_now_add=True,blank=True, null=True)
        updated = models.DateTimeField(auto_now=True,blank=True, null=True)
        active = models.BooleanField(default=True,blank=True, null=True)

        class Meta:
            ordering = ('created',)

        def __str__(self):
            return 'Comment by {} on {}'.format(self.name, self.post)

im able to create post on admin

   from posts.models import Post as Post
    from django.contrib import admin
    from comments.models import Comment
    @admin.register(Comment)
    class CommentAdmin(admin.ModelAdmin):
        list_display = ('name', 'email', 'post', 'created', 'active')
        list_filter = ('active', 'created', 'updated')
        search_fields = ('name', 'email', 'body')

can create my post and persist on db

now i have this function to persist the comment on front

from django.shortcuts import render
from .models import Post, Comment
from .forms import EmailPostForm, CommentForm

    def post_detail(request, year, month, day, post):
        post = get_object_or_404(Post, slug=post,
                                       status='published',
                                       publish__year=year,
                                       publish__month=month,
                                       publish__day=day)

        # List of active comments for this post
        comments = post.comments.filter(active=True)

        new_comment = None

        if request.method == 'POST':
            # A comment was posted
            comment_form = CommentForm(data=request.POST)
            if comment_form.is_valid():
                # Create Comment object but don't save to database yet
                new_comment = comment_form.save(commit=False)
                # Assign the current post to the comment
                new_comment.post = post
                # Save the comment to the database
                new_comment.save()
        else:
            comment_form = CommentForm()
        return render(request,
                      'blog/post/detail.html',
                      {'post': post,
                       'comments': comments,
                       'new_comment': new_comment,
                       'comment_form': comment_form})

now on my feed.html i have the list of post that i iterate with a for and with a inner for i iterate the comments

feed.html

       <div class="row"style= "align:center">
            {% for post in posts %}
            <div class="col-sm-12 col-md-8 offset-md-4 mt-5 p-0 post-container,width:50%;">
                    <div class="card" style="width: 32rem;width:50%;">
                        <div class="card-body">
                            <div class="media pt-3 pl-3 pb-1">
                                <a href="{% url "users:detail" post.user.username%}">
                                    <img class="mr-3 rounded-circle" height="35" src="{{ post.profile.picture.url }}" alt="{{ post.user.username }}">
                                </a>
                                <h3 class="card-title">{{ post.title }}</h3>
                            </div>

                                    <p class="card-text">{{ post.desc }}</p>

                        </div>
                    </div>
                <img style="width: 50%; heigth:60%" src="{{ post.photo.url }}" alt="{{ post.title }}">

                <div class="media-body">
                       <b> <p style="margin-top: 5px;">@{{ post.user.username  }} - <small>{{ post.created }}</small>
               &nbsp;&nbsp;
                    <a href="" style="color: #000; font-size: 20px;">
                        <i class="far fa-heart"></i>
                    </a>
                    <br>
                </p></b>



                </div>
            </div>

  {% for comment in comments.post %}
  <div class="comment">
    <p class="info">
      Comment {{ forloop.counter }} by {{ comment.name }}
      {{ comment.created }}
    </p>
    {{ comment.body|linebreaks }}
  </div>
{% empty %}
  <p>There are no comments yet.</p>
{% endfor %}

{% if new_comment %}
  <h2>Your comment has been added.</h2>
{% else %}
  <h2>Add a new comment</h2>
  <form action="." method="post">
    {{ comment_form.as_p }}
    {% csrf_token %}
    <p><input type="submit" value="Add comment"></p>
  </form>
{% endif %}
                {% endfor %}
        </div>
    </div>

but doing this i get this on the from for a post with comments

im missing some url (to call post_detail )and action on the comment for ? why im unable to see the list of comments for a post ?

Answer 1

Here in your Post model there is no field for slug. So instead of slug pass the post pk to the detail view like this.

def post_detail(request, pk):
    post = get_object_or_404(Post, pk=pk)
    # now you can filter the comments here
    comments = post.comment_set.filter(active=True)
    return render(request,'blog/post/detail.html',{'post': post,'comments': comments}

See the docs for more info