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Rails tracks the row count and affected rows for queries made with ActiveRecord. A recent PR makes a tiny, but important change to the PostgreSQL adapter to make the row count significantly more efficient.
To provide clean integrations with Rails plugins, we can use lazy load hooks to add callbacks for when classes are loaded.
Rails 8 now ships with multiple databases by default. In this lesson, we'll learn how the configuration works and how to deploy to production with environment variables
Enqueuing jobs inside of a database transaction is a common mistake that's now handled for you automatically in Rails 7.2
To start off our automated transcription series, we'll start by creating our database model for
ActiveRecord Aggregations let you use composed_of to combine columns into a single attribute using a Ruby object.
We need to keep track of the web pages we want to monitor and scrape data from, so let's create our ActiveRecord model for storing this information and a Result model for storing the result each time we scrape a web page.
Rails associations provide an object that quacks like an ActiveRecord but is actually a CollectionProxy. We can extend the proxy object with our own functionality to add useful features with Ruby Modules.
Mission Control Jobs is a UI for ActiveJob in Rails. It was announced at Rails World 2023 and just got released. It currently supports SolidQueue and Resque with more queue adapter support in the future.
Using some Ruby metaprogramming and class_eval, we can build Notifiers that allow us to dynamically define STI models and inject code into them with our notification system.
Have models that store the same data but need different functionality? Rails provides Single Table Inheritance in ActiveRecord to solve this problem.
Notifications in Rails applications are even easier now with the new release of Noticed gem v2. We'll explore how to add notifications to your Rails app in just a few minutes.
Did you know serialize can be used for more than saving Ruby hashes as JSON or Yaml in your db? You can take any attribute and convert it to an object seamlessly with Rails using serialize and custom coders.
Not eager loading in your Rails applications can have series performance side effects. Rails now comes with a strict_loading feature that you can use to make sure that queries are run in an efficient manner.
Has secure password is boasting some new benefits in Rails 7.1 with the addition of the authenticate_by method which reduces timing-based enumeration attack vulnerabilities. Also being introduced is the ability to provide a required password challenge.
First things first, we need a Link model to store our
Normalizing data has always been a pain in Rails, but not anymore! Instead of callbacks or overriding setters, Rails 7.1 introduces "normalizes" to make normalizing data easy.
Rails' ActiveRecord supports virtual generated columns in the database. For example, you can use these for converting numbers like degrees Celsius to Fahrenheit. These columns are saved with the regular table data and allows you to query against them.
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.
Now that we have password sharing, it's important to add roles & permissions so users have limited access to actions on shared passwords.
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