We all know, Comments are every where Blogs, Social Networking sites, e-learning forums etc.

In this article, we've got an Article model and we want to create a nested commenting system onto that. Such that Article can have comments, comments can have replys, replys can have more replys and so on.

For example -

This is an article
 This is an comment
 this is a reply
 this is a reply's reply
 .... (so on)
 This is another comment.

Now, we're going to...

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