Accept subscription and one-time payments with Stripe in your Rails apps
Building a simplified version of Instagram is a great way to learn Rails.
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Drag and drop sortable lists in Rails aren't too hard using Sortablejs and Stimulus to make wire them up to our backend with acts_as_list
We can use timestamps in our database to track of online users in your Rails
Learn how to write tests for validations on ActiveRecord objects in Ruby on Rails
With Rails 6.0, you can now define multiple primary and replica databases, define separate migrations for each primary database, and configure each model to read and write from different databases.
Race conditions can cause problems with data integrity. We can prevent these issues with Pessimistic Locking in ActiveRecord which uses database row-level locking.
When things (users, jobs, etc) attempt to update the same record at the same time, we can often lose changes. Optimistic locking uses a lock version number to warn you about updating stale objects so you can handle that safely.
Mentioning Users with an @mention is a super common feature. Trix and ActionText are now part of Rails 6 which means we can very easily add support for tagging users with @mentions and other custom attachments in your applications.
Don't like Cocoon or it's jQuery dependency? We can use Stimulus JS and build dynamic nested forms in Rails with accepts_nested_attributes_for from scratch pretty easily!
Creating draft records in your database can be tricky. We'll be using the Draftsman gem to help us create draft versions of our records with our autosave Javascript
Autosaving draft records allows you to make sure users don't lose their work and can easily write draft content without publishing right away. We'll be using Stimulus to build an autosave controller for our form and Draftsman to power the backend.
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