Note: If you are currently working with Ruby 1.8.7 or 1.9.3, we recommend to upgrade to Ruby 2.1 first. From...
On some of our older projects, we use the mysql2 gem. Unfortunately, versions 0.2.x (required for Rails 2.3) and...
It most cases it's not necessary to add a version constraint next to your gems in the Gemfile. Since...
Capistrano 3 is a major rework of the framework and requires several adjustments to your deploy configuration files. The biggest...
I got this error after upgrading Ruby from 2.4.5 to 2.6.4 when I opened the Rails console - rails server still...
If your app does not need to support IE11, you can use most ES6 features without a build step. Just...
Specify these gem versions in your Gemfile: gem 'cucumber', '~> 1.3.0' gem 'cucumber-rails', '= 0.3.2' # max version for Rails 2
webpack is a very powerful asset bundler written in node.js to bundle (ES6) JavaScript modules, stylesheets, images, and other assets...
Recently I made an upgrade from Bootstrap 3 to Bootstrap 4 in a bigger project. Here are some tips how...
This is a short overview of things that are required to upgrade a project from the Asset Pipeline to Webpacker...
Why Rails has multiple schema formats When you run migrations, Rails will write your current database schema into db/schema.rb. This...
Add deprecation warnings and their solution or link to available solutions. Global access to Rake DSL methods is deprecated. Please...
CSP hat zum Ziel einen Browser-seitigen Mechanismus zu schaffen um einige Angriffe auf Webseiten zu verhindern, hauptsächlich XSS...
tl;dr Don't forget require 'English' if you use a named global such as $LAST_MATCH_INFO. Otherwise this...
This card explains how to install RubyMine for the first time. If you want to upgrade an existing RubyMine installation...
Suggested Workflow Set the ruby version in .ruby-version to 2.3.5, then perform these steps one by one, fixing errors...
We upgraded a Rails 2 application to Rails 3.2 and Ruby 2.1, changed the mysql adapter from mysql to mysql2...
The nokogiri gem provides different packages for several platforms. Each platform-specific variant ships pre-built binaries of libxml2, e.g...
Most of the time it is a tedious task to apply a code style guide to an existing code...
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There's a update guide at https://github.com/rails/sprockets/blob/master/UPGRADING.md In short, must replace Rails.application.config.assets.precompile entries with link statements in Sprockets...
It may also be possible to upgrade higher according to this post: http://blog.lucascaton.com.br/index.php/2014/02/28/have-a-rails-2-app-you-can-run-it-on-the-newest-ruby/