# features/support/database_cleaner.rb DatabaseCleaner.clean_with(:deletion) # clean once, now DatabaseCleaner.strategy = :transaction Cucumber::Rails::Database.javascript_strategy = :deletion Cucumber & Rails 2 The latest available cucumber-rails for Rails 2 automatically uses database...
...off. To have database_cleaner work correctly: Add the attached database_cleaner.rb to features/support/ Make sure features/support/env.rb contains the following lines in this order: # features/support/env.rb require 'features/support/database_cleaner' require 'cucumber/rails/active_record' require 'cucumber/rails/world...
If your app does not need to support IE11, you can use most ES6 features without a build step. Just deliver your plain JavaScript without transpilation through Babel or TypeScript...
...and modern browsers will run them natively. Features supported by all modern browsers include: fat arrow functions (() => { expr }) let / const class async / await Promises Generators Symbols Rest arguments (...args)
Bundler so far ignored the version specified under BUNDLED_WITH in the Gemfile.lock. This had two annoying consequences: If the bundler version on your system was lower than in the...
...and had to manually install the correct version. If the bundler version on your system was higher than in the Gemfile.lock, bundler silently updated the version in the Gemfile.lock to...
...and how to normalize them. In the example below, the Movie#title attribute is stripped from leading and trailing whitespace automatically: class Movie < ApplicationRecord normalizes :title, with: -> { _1.strip } end
...a class. Which could look like this: class Movie < ApplicationRecord normalizes :title, with: Normalizers::StripNormalizer end The with keyword accepts any callable object that takes the attribute’s value as...
The File System Access API is a new capability of modern browsers that allows us to iterate over selected folders and files on a user's machine. Browser support is...
...not great yet, but if the feature is only relevant for e.g. a single admin user it could still be worth using it prior to wider adaption instead of building...
...only tidies up your own code, but also makes it easier to write future specs. However, not all situations are well-suited for that. Sometimes the effort isn't worth...
...would need too many parameters to be reusable. In those cases, you can also simply extract a private method: describe `/search` do it "doesn't lose the infinite scroll's...
...use heredoc to avoid endlessly long lines of code that nobody can read. Heredoc strings preserve linebreaks and can be used like this: def long_message puts(<<-EOT)
...a very long message... Sincerely, foobear EOT end <<-EOT will be somewhat of a placeholder: anything you write in the line after you used it will be its value until...
...driver_opts directly. However, this is deprecated and will be removed in version 4 of selenium-webdriver. Version 5.x will drop support for passing the service options as hash...
...Option 2: Connect tests to a manually started chromedriver Warning This does not work with selenium-webdriver > 4 anymore. You can pass in a specific port as attribute of the...
This is a short overview of things that are required to upgrade a project from the Asset Pipeline to Webpacker. Expect this upgrade to take a few days even the...
Cleanup Remove all gems you used for assets and the Asset Pipeline itself, e.g. sass-rails, uglifier, autoprefixer-rails, sprockets-rails, jquery-rails, bootstrap-sass and many more.
This RailsCast demonstrated a very convenient method to activate VCR for a spec by simply tagging it with :vcr. For RSpec3 the code looks almost the same with a few...
...minor changes. If you have the vcr and webmock gems installed, simply include: # spec/support/vcr.rb VCR.configure do |c| c.cassette_library_dir = Rails.root.join("spec", "vcr") c.hook_into :webmock end RSpec.configure do |c...
Tested on Ubunut 22.04 1. Opener script Create a file ~/.local/bin/coverage_zip_opener with: #!/bin/bash tmp_folder="/tmp/coverage-report-opener" if [ -z "$1" ] then echo "Usage: coverage_zip_opener [filename]" exit -1 fi
index_filename=$(find /tmp/coverage-report-opener -name "index.html" | awk '{ print length, $0 }' | sort -n -s | cut -d" " -f2- | head -1) if [ -z "$index_filename" ] then echo "No index file...
We structure our CSS using the BEM pattern. Our naming convention for blocks, elements and modifiers has evolved over the years. This card shows our current style and various alternative...
...styles that you might encounter in older projects. The difference between the various styles are mostly a matter of taste and optics. I do recommend to not mix styles and...
...investigate by running that example again using rspec . However, this does not work with shared examples, since Rspec doesn't know in which context the shared example should be run...
...But there is a different way: You can run the shared example using the -e, --example option. It takes a string value and runs all scenarios containing that substring in...
...s possible you get this "error" message: *** [err :: example.com] There are no Phusion Passenger-served applications running whose paths begin with '/var/www/example.com'. *** [err :: example.com] This is just because there were...
...no running passenger process for this application on the server which could be restarted. It's not a real error. The application process will start if the first request for...
If you're using a Redis cache in Rails (e.g. :redis_cache_store), it's possible to configure additional parameters for your Redis connection. Example config for Rails 7.2
...store = :redis_cache_store, { pool: { timeout: 0.5 }, read_timeout: 0.2, # default 1 second write_timeout: 0.2, # default 1 second # Attempt two reconnects with some wait time in between reconnect_attempts...
Option 1: Creating a self-signed certificate with the openssl binary As igalic commented on this gist. openssl req -new -newkey rsa:2048 -sha256 -days 365 -nodes -x509 -keyout server.key...
make it an X.509 certificate, not a Certificate Signing Request. Option 2: Creating a self-signed certificate with the mkcert binary The linked tool mkcert helps you to setup...
...offset, e.g. Thu, 28 Mar 2019 16:00:00 CET +01:00. Ruby's stdlib TZInfo also has time zones, but with different identifiers. Unfortunately, not all timezone codes can...
...time zone has a pretty abbreviation. In such cases, you'll end up with a semi-broken offset identifier that humans won't understand. What to do?
...not necessary to add a version constraint next to your packages in the package.json. Since all versions are saved in a lockfile, everyone running yarn install will get exactly the...
...within the yarn install command: Before: unpoly@^2.7.2: version "2.7.2" resolved "https://registry.yarnpkg.com/unpoly/-/unpoly-2.7.2.tgz#55044c08bce0984c000f7cd32450af39271727de" integrity sha512-jfBbBRBQMCZZcNS6fckKpFunfdiTDBXW8yxRKqLs09jSrYYUDPd+YuyDoXjABXOro0aDUIMcmyTc7moc1/Z5Tw== After: unpoly@x: version "2.7.2" resolved "https://registry.yarnpkg.com/unpoly/-/unpoly-2.7.2.tgz#55044c08bce0984c000f7cd32450af39271727de" integrity sha512-jfBbBRBQMCZZcNS6fckKpFunfdiTDBXW8yxRKqLs09jSrYYUDPd...
...loading associations. By preloading associations you can prevent the n+1 query problem that slows down a many index view. You might have noticed that using :include randomly seems to...
...involved table with a condition like...
...WHERE id IN (123, 125, 170). Execute a single query for a huge table joined from all involved tables. ActiveRecord prefers option 1, probably...
...are using the routing-filter gem in your Rails 7.1 app for managing URL segments for locales or suffixes, you will notice that the filters do no longer apply, routes...
...your controller action. This way you receive a locale parameter from a matching URL segment. Before Rails 7.1, this method returned all associated routes (as enumerable) and the using methods...
...on a very good network connection. To test how your application behaves on a slow network (e.g. mobile), you can simulate limited bandwidth. Chrome Open the dev tools (Ctrl+Shift...
...I or F12) and switch to the "Network" tab In the row below the dev tool tabs, there's a throttling dropdown which reads "Online" by default. Inside the dropdown...
...from the app/models folder to the lib/ folder. The approach is applicable to arbitrary scenarios and not limited to API clients. Example Let's say we have a Rails application...
...that synchronizes its users with the Github API: . └── app └── models ├── user │ ├── github_client.rb │ └── sychronizer.rb └── user.rb In this example the app folder contains domain dependent code (user.rb and sychronizer.rb) and domain independent...
...universe multiverse deb-src http://de.archive.ubuntu.com/ubuntu/ yakkety-backports main restricted universe multiverse deb http://security.ubuntu.com/ubuntu yakkety-security main restricted universe multiverse deb-src http://security.ubuntu.com/ubuntu yakkety-security...
10 http://de.archive.ubuntu.com/ubuntu yakkety-updates/main amd64 Packages 10 http://security.ubuntu.com/ubuntu yakkety-security/main amd64 Packages 2:7.4.1829-1ubuntu2 10 10 http://de.archive.ubuntu.com/ubuntu yakkety/main...
When you need to add a event listener to hundreds of elements, this might slow down the browser. An alternative is to register an event listener at the root of...
...for events to bubble up and check whether the triggering element (event.target) matches the selector before you run your callback. This technique is called event delegation. Performance considerations