...need to decide, which configuration between different environment works good for you. By default Rails uses these settings for your application: require(:user) raises in all environments ActionController::ParameterMissing if...
Rails log files rotate automatically when they reach approx. 100MB: $ ls -lh log/ -rw-r--r-- 1 user group 55M Sep 15 09:54 development.log -rw-r--r-- 1 user...
...This behavior is a built-in feature of Ruby's standard Logger class, which Rails uses by default. To control the maximum file size, set config.log_file_size in your...
Rails offers the fresh_when method to automatically compute an ETag from the given record, array of records or scope of records: class UsersController < ApplicationController def show @user = User.find(params...
Rails is split into a large number of (sub-) frameworks. The most important and central of those are activesupport (extends the Ruby standard library) activerecord / activemodel (ORM for Rails)
...gem 'actionmailer', require: false) as well. When you look into the definition of rails/all (in railites-x.x.x/lib-/rails/all.rb) you can find the exact path for requiring the sub-frameworks.
By activating strict_loading you force developers to address n+1 queries by preloading all associations used in the index...
...so please feel free to contribute! General workflows The official guide How to upgrade Rails: Workflow advice Upgrading Rails: Example commits Upgrade to Rails 7 Don't use log level...
...debug in your production environments Rails 7.1: Take care of the new production log default to standard out Upgrade to Rails 6 Don't use log level :debug in your...
We are using assignable_values for managing enum values in Rails. Nevertheless Rails is adding more support for enum attributes, allowing to have a closer look at the current feature...
...to our still preferred option assignable_values. Active Record enum attribute interface By default Rails is mapping enum attributes to integers: class Conversation < ActiveRecord::Base enum :status, [ :active, :archived ]
...creating a database table for a join model without further importance, you can use Rails' create_join_table: class CreateSchoolsStudents < ActiveRecord::Migration[7.2] def change create_join_table :schools, :students...
When you want to group rails models of a logical context, namespaces are your friend. However, if you have a lot of classes in the same namespace it might be...
'accounting_' end end class Accounting::Invoice < ApplicationRecord ... end class Accounting::Payment < ApplicationRecord ... end Rails will be able to derive the table name accounting_invoices for Accounting::Invoice. Note
Rails 5.2 soft-deprecated the storage of secrets in secrets.yml in favor of a new thing, credentials.yml.enc. Rails 7.1 deprecated secrets and Rails 7.2 finally removed it. In our permissions...
...for existing applications it may be appropriate to keep using secrets.yml. Restoring secrets in Rails 7.2+ Restoring Rails.application.secrets is really simple, thanks to config_for. Simply add this to config/application.rb...
After an upgrade to rails 7 I noticed that async reindexing jobs of Searchkick were failing for Model.reindex(mode: :async, wait: true): /home/a_user/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/searchkick-5.3.1/lib/searchkick/relation_indexer.rb:142:in `block in batch_job': undefined...
...under Selenium WebDriver is super-painful. It's much easier to detect the current Rails environment instead. You might be better of checking against the name of the current Rails...
...in a data-environment of your . E.g., in your application layout: <html data-environment=<%= Rails.env %>> Now you can say in a piece of Javascript: if (document.documentElement.dataset.environment == 'test') { // Code that should...
Rails slightly changed the fragment cache implementation from Rails 7.0 to Rails 7.1. Unfortunately, this is incompatible with how Haml 5 patches Action View buffers. I tried turning a String...
...an ActionView::OutputBuffer, but this brought up other issues. Conclusion While we have a Rails 7.2 application successfully running with Haml 5, Rails applications with fragment caching need to upgrade...
As your Rails project grows, you will accumulate a number of small patches. These will usually fix a bug in a gem, or add a method to core classes.
...change_storage.rb fix_cache_ids.rb sanitize_filename_characters.rb ruby/ range/ covers_range.rb array/ dump_to_excel.rb xss_aware_join.rb enumerable/ collect_hash.rb natural_sort.rb string/ to_sort_atoms.rb rails/ find_by_anything.rb form_builder.rb form_for_with_development_errors.rb Note how all patches for standard library classes are in the ruby...
...you most likely want to use this in combination with the ActionDispatch::AssumeSSL middleware (Rails >= 7.1). This middleware makes your app assume that SSL terminates at the load balancer and...
...custom middleware to automatically flag all cookies as secure-only In a Ruby on Rails app you can add a middleware that automatically sets the Secure flag to all server...
...with HSTS. The HSTS part is important. Use a reliable authentication solution, e.g. Compose Rails authentication primitives, Clearance or Devise. Don't start from scratch (see bottom).
...root path: xsendfile: unable to find file: /tmp/foo20110721-28050-1h104da-0 The reason for this is that Rails 3 uses X-Sendfile for file downloads and Apache is only allowed to transfer files...
Icon fonts like Font Awesome are infinitely scalable, look great on high-DPI displays and will give your app a...
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 policy.report_uri 'https://ooo4444bbb.ingest.de.sentry.io/api/ooo4444bbb/security/?sentry_key=ooo4444bbb' end end Replace the actual...
Ever needed to use a global variable in Rails? Ugh, that's the worst. If you need global state, you've probably reached for Thread.current. When you're using Thread.current...
Git diffs show the surrounding contexts for diff hunks. It does so by applying regular expressions to find the beginning...
Greg Molnar has written a neat article about creating a single-file Rails app. This is not meant for production use but can be useful to try things out, e.g...
...when hunting down a bug or embedding a Rails app into the tests of a gem. What you do is basically: Put everything (gems, application config, database migrations, models, controllers...
The :test adapter doesn't respect limits_concurrency configuration. Switch to :solid_queue adapter in your test to verify blocking...
...posts with a limited number of tags. The following chapters explain different approaches in Rails, how you can assign such an association via HTML forms. In most cases you want...
...with assignable values. The basic setup for all options looks like this: config/routes.rb Rails.application.routes.draw do root "posts#index" resources :posts, except: [:show, :destroy] end db/migrate/20230510093740_create_posts.rb class CreatePosts < ActiveRecord::Migration...