Slow test suites are a major pain point in projects, often due to RSpec and FactoryBot. Although minitest and fixtures are sometimes viewed as outdated, they can greatly improve test...
We adopted a project using minitest and fixtures, and while it required some initial refactoring and establishing good practices, the faster test suite was well worth it! Stick with...
...much faster than the configured up.form.config.watchInputDelay. Therefore, it may happen that you already entered something into the next field before Unpoly updates that field with a server response, discarding your...
The steps I wait for active ajax requests to complete (if configured) and capybara-lockstep can catch some of these cases, but not all. Both of these only wait...
Rails 3.0 has been underway for a good two years, so it’s with immense pleasure that we can declare...
Hanna is an RDoc template that scales. It's implemented in Haml, making the sources clean and readable. It's built with simplicity, beauty and ease of browsing in mind...
Martin Odersky talks with Frank Sommers and Bill Venners about the compromises and most important goals in Scala's design, its object-oriented innovations, and what's in it for...
...or position: fixed display: inline-block display: table-cell overflow: (not "visible") and more, see https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Block_formatting_context Example: A fluid main area with a right sidebar
...you don't want either column to clear content of the other. Float the sidebar to the right and you're set: its content now renders in the sidebar's...
Phusion Passenger changed the way how it gets restarted several times. Through the project's history, these all were valid: touch tmp/restart.txt sudo passenger-config restart-app /path/to/app passenger-config...
gem 'capistrano-passenger', require: false Add to your Capfile: require 'capistrano/passenger' Declare which server role should be restarted (optional). Usually passenger tries to restart all servers with the app...
It installs precompiled Ruby binaries, so installing a new version will take seconds, not minutes. The switch only takes some minutes using the instructions below. After this you...
...your Ruby and Node versions, as well as global gems and npm packages. Remove shell configuration for rbenv and nvm Search for rbenv and nvm in your ~/.bashrc and ~/.profile...
...exception, Rails will look at the exception's class and choose an appropriate HTTP status code and error page for the response. For instance, an ActiveRecord::RecordNotFound will cause Rails...
...render a red "The page you were looking for doesn't exist" with a status code of "404" (not found). The mapping from exception classes to error types is a...
...END__ keyword tells Ruby where a file ends – but you don't have to stop there. Any text you add after it is accessible via the DATA object.
CarrierWave comes with a set of default configuration options which make sense in most cases. However, you should review these defaults and adjust for your project wherever necessary.
...also find suggestions on what to change below. Understanding the default configuration Here is the current default config for version 2: config.permissions = 0644 config.directory_permissions = 0755 config.storage_engines = { :file => "CarrierWave...
Why secure-only cookies used to be necessary Cookies have an optional secure flag. It tells the browser to not send the cookie for a non-https request.
...users from http:// to https://. The reason was that most users will only enter a scheme-less domain like makandra.de into their location bar, which will default to http://makandra.de...
Short reference on how to quickly debug the vanilla Rails job adapters. Queue Adapters by Environment Environment Adapter Jobs Run In Worker Needed? development :async Rails server process No
Not executed (stored) No production :solid_queue Separate worker Yes (bin/jobs) Development (:async) Jobs run in background threads (Concurrent Ruby ThreadPoolExecutor) within the process that called the job.
...This lesson covers metaprogramming techniques and how to use them to build a domain-specific language (DSL), along with the price you pay in readability. Important Work on this lesson...
...exec) and explain why DSLs depend on this. You can explain what a domain-specific language is, and weigh its benefit — data that reads like prose — against its costs: code...
The following two hints are taken from Github's Ruby style guide: If your regular expression mentions a lot of forward slashes, you can use the alternative delimiters %r(...), %r...
...complex, you can use the /x modifier to ignore whitespace and comments: regexp = %r{ start # some text \s # white space char (group) # first group (?:alt1|alt2) # some alternation end
With Ubuntu 24.04 it's not longer possible to setup FDE with BTRFS The new installer won't offer you any options for manually created dm-crypt volumes
.../dev/mapper/ubuntu--vg-ubuntu--lv /mnt Move default subvolume to @ cd /mnt btrfs subvolume snapshot . @ rmdir @/ext2_saved btrfs subvolume set-default @ ls | grep -Ev "@|ext2_saved" | xargs rm -rf Create additional subvolumes btrfs subvolume...
...can reset the min-width. Say you have a simple grid layout: .container .first-item .second-item .third-item .container display: grid grid-template-columns: 100px 1fr 100px Your expectation...
...correct as the grid layout will try to do that: +---------+----------------------------+---------+ | | - 10 characters long | | +---------+----------------------------+---------+ However, if .second-item's content is too large to fit into the reserved space, it will...
...link to find out what ways there are for performacne analysis. This link is shows the more sophisticated way and encourages to dig deeper for optimizing your system. If you...
...Doing that enables e.g. man in the middle attacks. If you accept only a single expired and known certificate, you are much less in trouble. Setup All the solutions described...
...below use a verify_callback for the request's OpenSSL::X509::Store where you can specify a lambda to adjust its verification response. Your callback must return either true or...
You most likely never want to do this. But if you do: Model.update_all({:id => new_id}, {:id => old_id...
When you need to find out in which kind of spec you are during run-time, it's definitely possible. It's a lot easier in RSpec 2+.
...consider this global before block where you'd want to run some code for specific specs only: config.before do # stuff that_fancy_method # more stuff end RSpec 2+
...maintain. There are some good practices for writing a changelog that adds value, please stick to these. Add a notice to the README's contribute section about the changelog
...this project will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). ## Unreleased - Added `Foo#foo` method. ## 1.0.0 - 2017-06-20 ### Breaking changes - Renamed `Foo...
...proven library instead of a homegrown solution, and what "homegrown crypto" risks. You can add sign-up, login and logout to a Rails app with our default library (Clearance), adapt...
...its views to the app, and deny access to signed-out users by default rather than per controller. You can attach records to the signed-in user and test the...
Jasmine has long standing support for writing asynchronous specs. In days gone by we used the done callback to achieve this, but these days it is possible to write much...
...more readable specs. Async specs As a first example, say we want to check that some form disables the submit button while working. // bad (how we used to do it...