Coverage reports are rarely useful if you run only small parts of your test suite. Just don't not load...
When RSpecs runs the first feature spec, you may see log output like this: Capybara starting Puma... * Version 6.5.0, codename...
ActiveRecord computes table names of model classes, and results are usually just like you'd expect. Adding a prefix for...
Currently we often use geordi to run cucumber and rspec tests. Geordi takes care of installing a matching chromedriver for...
In Rails 7.2. the feature ActiveRecord.after_all_transactions_commit was added, for code that may run either inside or outside...
In Rails 7.2 the new default for config.action_dispatch.show_exceptions is rescuable. :rescuable: It will show a Rails error page in...
You can report CSP violations to Sentry. Within config/initializers/content_security_policy.rb: Rails.application.configure do config.content_security_policy do |policy| # Settings for the policy...
The linked article shows how to configure omniauth-multi-provider to support multiple SAML identity providers for a single Rails...
If you need dummy data to play around with in development, it's often faster to reuse your existing factories...
When you want to filter records in a model where a string column roughly matches a given term, you can...
In Rails, the implicit_order_column (added in Rails 6) is a configuration option that helps you define the default...
Why Rails has multiple schema formats When you run migrations, Rails will write your current database schema into db/schema.rb. This...
ActiveStorage does not provide any built-in way of implementing authentication for the available DirectUpload endpoint in Rails. When using...
PostgreSQL can cosplay as a full-text search engine. It doesn't have the features or fidelity of ElasticSearch or...
Method delegation in Rails can help you to keep your code organized and avoid deep call chains (law of demeter...
Haml renders HTML with indentation reflecting the nesting level of elements. When it comes to white-space preserving content, this...
Given there is a user with an attachable avatar: class User < ApplicationRecord has_one_attached :avatar end
Rails wraps your parameters into an interface called StrongParameters. In most cases, your form submits your data in a nested...
The new params.expect method in Rails 8 improves parameter filtering, addressing issues with malformed input and enhancing security. It provides...
Bundler allows you to specify the name of the Gemfile you want to bundle with the BUNDLE_GEMFILE environment variable...
Also see the list of IRB commands. Switching the context Changes the "default receiver" of expressions. Can be used to...
To reverse lookup a fixture by its table name and id, use the following approach on ActiveRecord::FixtureSet: table = 'users...
TL;DR: Rails ships two methods to convert strings to constants, constantize and safe_constantize. Neither is safe for untrusted...
In development, we store files using ActiveStorage's disk service. This means that stored files are served by your Rails...