Posts currently display with the oldest up top and we are unable to see the date they were published. You can try the following:

• retrieve the posts in descending order of created_at datetime
• display when the posts were published by formatting the date in a human-readable way

When a user signs up they should (probably) be automatically signed in so they can start using the site. At the moment, they're forced to log in with the credentials they just created.

This should be a quick adjustment by setting your session after account creation.

It's currently possible to sign up without a properly formatted email address. In your User model you could add in validations.

The following validations would be good to have:

• verify email is unique
• verify email is actually an email address
• password minimum length of 8

The edit form changes the user's password, which could be a confusing user experience (UX). Often password changes are separated out into a "change password" feature (could have a separate view & action for that if you wanted). For a profile change, you could either remove the password or ask them to verify their password (which is common for sensitive data changes to make sure the user didn't go AFK and allow someone to change their details while they were away).

The posts index page currently has links with the text "show" that goes to the post show view, which in turn shows all comments for that post. You'd probably want to alter the language to say "View comments" and you could also display the total number of comments a post has:

"View Comments (10)"

If there were ten comments the link might read something like the above.