What's New in RubyMine


Frozen objects inspection

Since String literals are going to be immutable in Ruby 3 and Ruby 2.3 has already added a new Frozen String Literal Pragma (# frozen_string_literal: true), we’ve added a new code inspection (Settings | Editor | Inspections | Ruby | Frozen object modification) that now highlights immutable strings as well as any other frozen objects when modified.

Rbenv gemsets

RubyMine has supported rbenv gemsets since version 8. Thanks to your feedback, we go on polishing this feature to make gemset management smoother. This version brings a new inspection with a quick-fix option (Alt+Enter) available for .rbenv-gemsets and .ruby-gemset files with — any nonexistent gemset is highlighted and can be created on the fly.


Language injection

If you use YAML to store code fragments – HTML, JavaScript, SQL or others – you’ll be glad to have a new and long-awaited language injection option (Alt+Enter) in your files. It makes possible language-specific code highlighting, completion, formatting, and more.

Testing with RSpec

New refactoring for let statements

Using let statement in RSpec tests is considered to be a good practice. The IDE now encourages you to use it with the new refactoring – you can extract a code fragment into a new let statement (Refactor | Extract | RSpect 'let'), and be sure the refactoring is safe and duplicate code fragments are replaced correctly.

Capybara support

Capybara is pretty standard for RSpec acceptance tests nowadays. With RubyMine 2016.2 you can run and debug not only whole feature specs, but single scenarios as well. The IDE behaves the same for both acceptance tests and your model and controller tests.

User Interface

Fonts with ligatures

We've added support for monospace font ligatures. To enable ligatures, go to Settings | Editor | Colors & Fonts | Font, choose a font that supports ligatures, e.g. FiraCode, Hasklig, Monoid or PragmataPro and select Enable font ligatures option.

Background images

Also, we’ve added a new action called Set Background Image. Give your IDE a custom look by choosing a background image for the editor and the IDE frame.

The action is available via Find Action and, for a selected image file, via the context menu for the Project tool window and Image Editor.

Inspection Results tool window

The Inspection Results tool window has been redesigned for better ergonomics: now the code location for each problem is displayed, along with controls to apply a quick-fix or suppress the inspection.


We've reworked the way RubyMine displays notifications to make them even friendlier: the popups are now displayed in the right-hand bottom corner (next to the Event Log tool window icon), more compact, and grouped by the subsystem they came from.


ECMAScript 6

The IDE now helps convert callback functions to arrow functions when you click Alt+Enter on the function keyword. Also, it can convert arrow functions to shorthand arrow functions.

Postfix completion

In addition to the .var postfix template, added earlier, now you can use .let and .const templates. As you might guess, when you press Tab these expand into declarations with let and const keywords.


RubyMine can now provide code completion and resolve for component properties defined using propTypes. For React events the IDE will automatically add {} instead of "". Non-DOM attributes are no longer marked as unresolved, and similarly, component lifecycle methods are not marked as unused anymore.


We’ve added a collection of Live Templates for Angular 2. To use a template, type its abbreviation in the editor and then press Tab to expand it. Press Tab again to jump to the next edit location in the template.

Also, the Project Wizard now supports Angular CLI.

Npm, Grunt and Gulp

Now you can specify any Grunt, gulp or npm task as a Before launch task in a Run/Debug configuration.

HTML code style

Configure whether you want the IDE to add single, double or no quotes at all when autocompleting attributes in HTML and JSX.


The update brings support for TypeScript 2.0 features: optional class members, readonly property, never type, this function type, global module export declaration, resolve for type declarations in @types folder, path mappings based module resolution, and more. Also, try smarter support for enums.

Version Control


The Log viewer for Git and Mercurial continues getting better: it now loads in the background; when you select several commits, you see all commit details; and Ctrl+L can be used for navigating to the Filter field.


Working with VCS patches has never been easier. Copy the patch to the clipboard, go to RubyMine – and the IDE will immediately suggest to apply it! Alternatively, just drag the patch file into the IDE, or use the Apply Patch action in the VCS menu.

Case-only renames

We've added support for case-only renames in Git for Windows and macOS.

Unversioned files

The Commit dialog shows unversioned files so you don’t forget to commit something important.

Database Tools

A new dialog helps you to import CSV and TSV files to the database.

Now you can dump multiple tables and even the entire schema, which means that any data (not only result-sets) can be exported to CSV, JSON or a list of INSERT/UPDATE statements.

Language injections let you treat string literals as live code written in other languages (like XML, JSON, any SQL dialect or regular expressions).

Table Editor adds actions for resizing columns as well as completion for values in a column.

Other improvements:

  • Markdown plugin is now bundled with RubyMine.
  • A small enhancement for those who use many languages, IntelliJ-based IDEs including RubyMine now understand what you mean, even if you forgot to switch the language of input.
  • You can now drag images, JavaScript or CSS files into the HTML file in the editor to generate src, script or link tags for them.
  • When using React with TypeScript, components are now automatically imported.
Learn about RubyMine 2016.1

Rails 5

Action Cable

First of all, the Rails channel generator is now available in RubyMine. When created, channels are shown in the Rails Project View with the list of methods.

Code completion is available inside a channel class. You can also navigate from a channel .coffee file to the corresponding channel class and its methods.

Renaming refactoring works fine for a channel as well as for channel method even being invoked from a .coffee file.

Rails API

If you use Rails only as a backend in your app, you might be glad that rails-api gem is now included into Rails 5. So, RubyMine now has a special option when creating a new application.

Please note that you can only choose Rails 5+ from the list. The Rails API application does not have views, so RubyMine will not show any view-related actions and icons.

ActiveRecord changes

Rails 5 brings a bunch of changes for ActiveRecord, and RubyMine adds code insight for all the new methods.

Rake commands

Rake commands are now united with Rails commands in Rails 5: the Tools | Run Rake Task… menu item remains unchanged, but invokes bin/rails commands now.

Rails Templates

When creating a new Rails app in RubyMine, you can now choose and clone one of the existing Rails examples.

The list of templates is sorted by popularity.

Ruby 2.3

New language level is detected and derived from the SDK.

Stubs for Ruby 2.3 are provided; newcomers like Array#dig are present in completion/resolving/documentation.

Safe navigation operator and squiggly heredocs are introduced.


ECMAScript 6 and TypeScript

The new refactorings include Create method, Extract method, Inline method and Introduce field.

The new intentions include Make class abstract, Make public/private and Remove modifier.

Any unused import statement is now highlighted. To remove all unused statements, call Optimize imports. Required import statements are added as you type.

Support for TypeScript has been updated to v1.8.

AngularJS 2

Code insight and navigation are available for directives, variables defined in templates, custom event handlers, paths in templateUrl and styleUrls fields, and many other situations.

Enjoy coding assistance for event and property bindings, which also works inside any data binding.

Also, the IDE now understands components defined using the new AngularJS 1.5 module.component() helper method.


The JavaScript debugger for Chrome now makes lots of new things possible. Debug asynchronous client-side code and arrow functions in ECMAScript 6, and stop on the breakpoints set in Web workers.

Also, the IDE now allows you to debug an app’s main process in a built or packaged Electron application, by using Node.js run/debug configuration. You can also debug render process by using Chromium remote debug configuration.

JSON schema

Thanks to support for JSON Schema, a format for describing JSON files, RubyMine can now provide coding assistance for certain types of JSON files. You can add one of the schemas available in the project’s repository, or create your own schema and then map it to a specific JSON file in your project. Code completion for tsconfig.json, .eslintrc and .babelrc is now powered by JSON Schema.


RubyMine 2016.1 also brings a lot of improvements for YAML: handling spaces as tabs, supporting multiline scalars as value of property key features, and many bugfixes.

Speed Search

Show usages

We have improved speed search in the Show usages popup. Now, when you use it, the matches are highlighted for easier navigation.


Now you can enjoy speed search even in the Terminal tool window.

Version Control


Two new actions are available via the Branches popup: Checkout with Rebase and Rename. The Checkout Tag or Revision action is now applied to all repositories configured for the project. If you do an Interactive Rebase, RubyMine now automatically stashes and unstashes local changes and assists with resolving conflicts.

Git 2.5 introduced worktrees to simplify working with clones of a single repository: instead of making a repository clone you can create a lightweight worktree. Now RubyMine lets you work with those worktrees just like you do with regular repositories.

By-word changes highlighting

Merging and comparing revisions with Git and other VCS just got easier with the added by-word difference highlighting.

Now you can also disable inspections in the Diff Viewer to minimize distraction.

Compare revisions between branches

For Mercurial we've made it possible to compare revisions of a file between branches (previously possible only within a single branch).

Database Tools


RubyMine provides coding assistance the features added in PostgreSQL 9.5.

We've also added support for the PostgreSQL hstore ‘?’ operator.

Table and column comments

Table and column comments now can be added and modified from the Create/Modify Table dialog (if the database supports that).

SQL Server

Custom types in SQL Server (alias types and table types) are now introspected and available for completion.

Table truncation

Use this new action to remove all rows from selected tables.


There is now a separate tool window for Docker. We have also added support for Docker Machine.

The right-side panel now allows viewing logs as well as managing environment variables and port bindings.

The lists of containers and images are now separate and more readable.

Other improvements:

  • Improved support for TextMate bundles with an ability to add custom TextMate themes
  • New Convert string to template string intention in ECMAScript 6
  • Coding assistance for classes and ids in CSS
  • Support for Dart test package and more generate code options for Dart
  • Simplified configuration for debugging client-side JavaScript code built with Webpack
  • Run configurations can now be started while indexing is in progress
  • Support for right-to-left languages in the editor