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Modules and concerns provide a way to make functionality reusable across your Rails application and other apps. In this lesson, we'll show you how we can refactor our comments functionality to add a feature to any resources in Rails.
We want to be able to delete blog posts we no longer want. We'll learn how to delete blog posts and refactor our code in this lesson.
Implementing Edit and Update actions are straightforward now. We can reuse what we've learned with New and Create and reuse some of the logic to edit and update database records in Rails.
Handling form submissions with Rails teaches us about strong parameters and saving data with our Rails models into the database.
We need a way to view individual Blog Posts on their own URLs now. That's where our Show action comes into play and we will learn how to build that in this lesson.
An index page allows us to display all the blog posts in our database. We will learn how to setup routes that point to controllers and actions that render HTML.
Learn about the ActionController Parameters with_defaults method to clean up your params in your Rails applications
Request Variants in Rails allow you to render different HTML depending on the device defined in the User Agent header.
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