Using canonical URLs for models
A website might have different pages that display the same content. In our application, the initial part of the content for each post is displayed both on the post list page and the post detail page. A canonical URL is the preferred URL for a resource. You can think of it as the URL of the most representative page for specific content. There might be different pages on your site that display posts, but there is a single URL that you use as the main URL for a post. Canonical URLs allow you to specify the URL for the master copy of a page. Django allows you to implement the get_absolute_url() method in your models to return the canonical URL for the object.
We will use the post_detail URL defined in the URL patterns of the application to build the canonical URL for Post objects. Django provides different URL resolver functions that allow you to build URLs dynamically using their name and any required parameters. We will use the reverse() utility function...
