Creating a comment system

We will continue extending our blog application with a comment system that will allow users to comment on posts. To build the comment system, we will need the following:

• A comment model to store user comments on posts
• A form that allows users to submit comments and manages the data validation
• A view that processes the form and saves a new comment to the database
• A list of comments and a form to add a new comment that can be included in the post detail template

Creating a model for comments

Let’s start by building a model to store user comments on posts.

Open the models.py file of your blog application and add the following code:

class Comment(models.Model):
    post = models.ForeignKey(Post,
                             on_delete=models.CASCADE,
                             related_name='comments')
    name = models.CharField(max_length=80)
    email = models.EmailField()
    body = models.TextField()
    created = models.DateTimeField(auto_now_add...