After running bundler / gem install I could not load nokogiri lately. It died with cannot load such file -- nokogiri/nokogiri.
This is not a problem of the gem but is due to a broken native extensions installation routine.

When installing nokogiri manually and with verbose output by using gem install -V nokogiri -v 1.5.6, you can see the problem scrolling by when the native extension is built:

/usr/bin//install -c -m 0755 nokogiri.so /home/thomas/.rvm/gems/ruby-2.0.0-p247/gems/nokogiri-1.5.6/lib/home/thomas/.rvm/rubies/ruby-2.0.0-p...

We sometimes send calender data or tasks using iCalendar (ICS) via eMail as specified in RFC 5545.

Recently, a customer noticed that Outlook automatically moved eMails containing such ICS data to deleted items folder and shows the events as tentative on calendar.
This problem is reported on TechNet, for example.

It ...

Preface: Normally, you would not need this in integrations tests (probably that's why it is so hard to achieve), because it is no actual "integration testing". If you use this step, know what you are doing.

Destroying a record with Capybara is not as easy as calling visit user_path(user, method: :delete), because RackTest's visit can only perform GET requests.

With this step you can destroy a records using either Selenium or RackTest. Ex...

bundle open BUNDLED_GEM will open the BUNDLED_GEM's source code in your default editor.

The translation method translate and its alias t have bang brothers: translate! and t!. They will raise I18n::MissingTranslationData on a missing translation instead of printing a string like translation missing: de.custom.failure.

To turn on raising globally, you need to replace the default exception handler. The attached initializer makes I18n just raise any exception (in a development or test environment).

Bundler 1.4.0 (still beta) can install gems in parallel, making a run of bundle install much faster.

Consul 0.10.0 now allows multiple power mappings for nested resources.

When using nested resources you probably want two power
checks and method mappings: One for the parent resource, another for the child resource.

Say you have the following routes:

resources :clients do
  resources :notes
end

And the following power definitions:

class Power
  ...

  power :clients do
    Client.active if si...

When two elements with display: inline-block are sitting next to each other, whitespace between becomes a space character.

Solutions, in decreasing order of awesomeness:

1. Don't have whitespace between two elements! See Whitespace Removal in Haml if you're using Haml.
2. Don't use inline-block. Use floating elements instead (don't forget to clear them!).
3. Try to compensate for the space with a negative margin. Unfortunately you will never be able to negate ...

A list of FontAwesome icons in the form of copyable Unicode characters or HTML entities.

You might prefer to use FontAwesome by simply typing out these characters instead of using CSS classes. Of course you need to then give the containing element as style:

font-family: FontAwesome

In order to keep the controllers directory tidy, we recently started to namespace controllers. With the :controller option you can tell Rails which controller to use for a path or resource. For nested resources, Rails will determine the view path from this option, too.

That means the following code in routes.rb …

resources :users do
  resource :profile, controller: 'users/profiles' #[1]
end

… makes Rails expect the following directory structure:

app/
  controllers/
    users/
      profiles_controller.rb
    users_control...

When you're writing migrations that do more than changing tables (like, modify many records) you may want some output. In Rails > 3.1 you have two methods at hand: announce and say_with_time.

In the migration:

class AddUserToken < ActiveRecord::Migration

  class User < ActiveRecod::Base; end

  def up
    add_column :users, :token, :string
    
    announce "now generating tokens"
    User.find_in_batches do |users|
      say_with_time "For users ##{users.first.id} to ##{users.last.id}" do
        users.each do |user|
        ...

CSS3 comes with new unit rem. It works like em but it is always relative to the <html> element instead of the parent element.

rem units are supported by all browsers and IE9+.

An opinion how to implement BEM. I don't agree with all of Nico's choices, but I applaud his approach to compile a simple and short list of rules.

I had some problems with Git and the file spec/fixtures/ČeskýÁČĎÉĚÍŇÓŘŠŤÚŮÝŽáčďéěíňóřšťúůýž. After pulling the latest commits, it would show that file as untracked, but adding and committing it would throw error: pathspec 'check in unicode fixture file once again' did not match any file(s) known to git.

Solution

Install Git version > 1.8.2 using homebrew and set

git config --global core.precomposeunicode true

Done.

Reason

According to the linked Stackoverflow post ...

... the cause is the different im...

Ruby's private keyword might do a lot less than you think.

"private" does not apply to class methods defined on self

This does not make anything private:

class Foo

  private

  def self.foo
    'foo'
  end
  
end

You need to use private_class_method instead:

class Foo

  def self.foo
    'foo'
  end
  
  private_class_method :foo
  
end

"private" does not apply to define_method

This does not make anythin...

• A short browsing revealed that this may be a current firefox issue
• Current workaround: use another browser
• If you have further helpful information, please notify me

Shared example groups are a useful RSpec feature. Unfortunately the default directory structure generated by rspec-rails has no obvious place to put them.

I recommend storing them like this:

spec/models/shared_examples/foo.rb
spec/models/shared_examples/bar.rb
spec/models/shared_examples/baz.rb
spec/controllers/shared_examples/foo.rb
spec/controllers/shared_examples/bar.rb
spec/controllers/shared_examples/baz.rb

To ma...

In Rails 5 you can say:

ApplicationController.render(
  :template => 'users/index',
  :layout => 'my_layout',
  :assigns => { users: @users }
)

If a Request Environment is needed you can set attributes default attributes or initialize a new renderer in an explicit way (e.g. if you want to use users_url in the template):

ApplicationController.renderer.defaults # =>
{
  http_host: 'example.org',
  https:      false,
  ...
}

...

RubyLTS is a long term supported fork of Ruby 1.8 that will continue to receive security updates for the forseeable future.

The Google Chrome DevTools allow you to inspect, debug, and analyze the on-device experience with the full suite of tools you're used to, meaning you can use the Chrome DevTools on your development desktop machine to debug a page on your mobile device.

Extends the Chrome WebInspector so you can debug AngularJS applications and hunt down performance issues.

It's really, really good.

When you have files in your .gitignore they won't be considered for changes, but still you might want to get rid of them, e.g. because they clutter your file system.

While a regular git clean will ignore them as well, passing the -x switch changes that:

git clean -x

If you want to see what would happen first, make sure to pass the -n switch for a dry run:

git clean -xn

Clean even harder by passing the -f (force cleaning under certain circumstances; I think this is also required by default) or -d (removes director...