• Write basic validations using Active Record helpers
• Write custom validations

This project has starter code for a couple of models, Author and Post. To get set up, run:

$ bundle install
$ rails db:migrate

Then run learn test to run the tests. We'll be focusing solely on the model files for this lab, so there's no need to run rails s or view anything in the browser.

Add validations to these models such that...

1. All authors have a name
2. No two authors have the same name
3. Author phone numbers are exactly ten digits
4. All posts have a title
5. Post content is at least 250 characters long
6. Post summary is a maximum of 250 characters
7. Post category is either Fiction or Non-Fiction. This step requires an inclusion validator, which was not outlined in the lesson. You'll need to refer to the Rails guide to look up how to use it.

Finally, add a custom validator to the Post model that ensures the title is sufficiently clickbait-y. The validator should add a validation error if the title does not contain:

• "Won't Believe"
• "Secret"
• "Top [number]"
• "Guess"

Use the Custom methods style of validator found in the Rails documentation.

• Active Record Validations
• Custom Methods