many to one field self relationship - django

Question

i used a self relationship inside model with foreignkey , purpose was to make a replyable comment , but idk how to use it in templates,
i mean whats different between 3 ManyToOne relationships i used in template , how can i know form send reply or comment?
model:
class Comment(models.Model):
#comments model
post = models.ForeignKey(Post,related_name='comments',on_delete=models.CASCADE)
text = models.CharField(max_length=300)
user = models.ForeignKey(get_user_model(),related_name='users',on_delete=models.CASCADE)
date = models.DateTimeField(auto_now_add=True)
parent = models.ForeignKey('self', null=True,related_name='reply',on_delete=models.SET_NULL)
class Meta():
verbose_name_plural = 'Comments'
ordering = ['date']
def __str__(self):
return self.test[:50]
template:
<div>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button value="submit">Send</button>
</form>
</div>
<div>
{% for comment in object.comments.all %}
<p>{{ comment.text }}</p>
{% for reply in object.reply.all %}
<p>{{ reply.text }}</p>
{% endfor %}
<form method='post'>
{% csrf_token %}
{{ form.as_p }}
<button value="submit">reply</button>
</form>
{% endfor %}
</div>
{% endblock %}
can you a little explain how it works?

Answer 1

You can consider using a recursive solution in your code using with template tag, like this:
First define a template which will render the comment:
<!-- comments.html -->
{% for comment in comments %}
<p>{{ comment.text }}</p>
<form method='post'>
{% csrf_token %}
{{ form.as_p }}
<button value="submit">reply</button>
</form>
{% if comment.reply.exists %}
<ul>
{% include "comments.html" with comments=comment.reply.all %}
</ul>
{% endif %}
{% endfor %}
Then include it in the original template:
<div>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<button value="submit">Send</button>
</form>
</div>
<div>
{% include "comments.html" with comments=object.comments_only %}
</div>
Finally, only send the Comments which does not have parents,like this:
class Post(...):
...
def comments_only(self):
return self.comments.filter(parent__isnull=True)