Randy Hoyt is presenting a way to display something (e.g. products) in a grid. It's responsive, too!

If you get this warning on your local machine one of these steps might help:

Rebuilt the gem with the newer library

gem install --no-rdoc --no-ri nokogiri -- --with-xml2-include=/opt/local/include/libxml2 --with-xml2-lib=/opt/local/lib

If you still get the error, try to uninstall all nokogiri versions with

gem uninstall nokogiri

and install nokogiri again.

Fixing the issue on servers

However, on our servers this probably will not work. On the server, gems are stored in the ../shared/bundle/ruby/:version/gems dire...

Today I got a better understanding of how git works, in particular what git checkout and git reset do.

Git basics

• A commit holds a certain state of a directory and a pointer to its antecedent commit.
• A commit is identified by a so-called ref looking something like 7153617ff70e716e229a823cdd205ebb13fa314d.
• HEAD is a pointer that is always pointing at the commit you are currently working on. Usually, it is pointing to a branch which is pointing to that commit.
• Branches are nothing but pointers to commits. Y...

simple_format ignores Rails' XSS protection. Even when called with an unsafe string, HTML characters will not be escaped or stripped!

Instead simple_format calls sanitize on each of the generated paragraphs.

ActionView::Base.sanitized_allowed_tags
# => #<Set: {"small", "dfn", "sup", "sub", "pre", "blockquote", "ins", "ul", "var", "samp", "del", "h6", "h5", "h4", "h3", "h2", "h1", "span", "br", "hr", "em", "address", "img", "kbd", "tt", "a", "acrony...

Ever wanted autocompletion for paths from paths.rb in Cucumber? This card lets you write your steps like this:

When I go to path *press tab now* # path is replaced with a list of all known Cucumber paths

This is how you do it

(key shortcuts apply for TextMate2)

1. Open the bundle editor (ctrl + alt +  + B)

2. Create a new Item ( + N), select "Command"

3. Paste this:
   ^
   #!/usr/bin/env ruby -wKU
   require File.join(ENV['TM_SUPPORT_PATH'], 'lib', 'ui.rb')

   cucumber_paths = File.join ENV['TM_PROJECT_DIRECTORY'], 'features'...

StaticMatic is a nice tool to build simple static websites.
In case you want to have some nifty styles on the navigation item that is currently active, you can use this:

=link 'Aktuelles', :class => (current_page =~ /aktuelles/) ? 'current' : 'default'

Keep in mind that current_page gives you the full relative path of your page. raise current_path in case you're not sure.

I know there is an navigation helper out there. I did not use it and also did not want to migrate.

Note: Modern Rails has two build pipelines, the asset pipeline (or "Sprockets") and Webpacker. The principles below apply for both, but the examples shown are for Sprockets.

Every page in your application uses many assets, such as images, javascripts and stylesheets. Without your intervention, the browser will request these assets again and again on every request. There is no magic in Rails that gives you automatic caching for assets. In fact, if you haven't been paying attention to this, your application is probabl...

The step definition below allows you to write:

Then I should see an HTML redirect to "http://www.makandracards.com" in the page head

Capybara

Then /^I should see an HTML redirect to "([^\"]*)" in the page head$/ do |redirect_url|
  page.should have_xpath("//meta[@http-equiv=\"refresh\" and contains(@content, \"#{redirect_url}\")]")
end

To find meta tags with Capybara, you can also use page.find('meta', visible: false).

Under certain circumstances gettext_i18n_rails will hit a near-infinite loop. This occured in Rails 2.3.5 with Haml 3.0.18 and fast_gettext 0.5.10.

gettext_i18n_rails's Haml-Parser compiles the Haml code and delegates the parsing to ruby_parser. Unfortunately, ruby_parser appears to be confused when a string contains both escaped chars (that is, any unicode characters as ndash, umlauts etc.) and #{} blocks, which makes it extremely slow.

The easiest "solution" we came up with was to replace all occurrences of UTF-8 chars wi...

pjax loads HTML from your server into the current page without a full reload. It's ajax with real permalinks, page titles, and a working back button that fully degrades.

pjax enhances the browsing experience - nothing more.

In a nutshell: return statements inside blocks cause a method's return value to change. This is by design (and probably not even new to you, see below) -- but can be a problem, for example for the capture method of Rails.

Consider these methods:

def stuff
  puts 'yielding...'
  yield
  puts 'yielded.'
  true
end

We can call our stuff method with a block to yield. It works like t...

A print stylesheet is easy to create. Choose a font suited for paper, hide some elements, done. Unfortunately print stylesheets often break as the application is developed further, because they are quickly forgotten and nobody bothers to check if their change breaks the print stylesheet.

This card describes how to write a simple Cucumber feature that tests some aspects of a print stylesheets. This way, the requirement of having a print stylesheet is manifested in your tests and cannot be inadvertedly removed from the code. Note that you can...

This article describes how to reset MySQL's or MariaDB's root password on your workstation. It's meant for local development purposes only, don't do this in production. This article will also help you if you have a fairly recent MariaDB version that uses authentication based on linux users instead of passwords for the root user and you prefer using a password for root.

Solution

Step 1 is getting a root mysql shell that allows us to change user credentials. We need to stop the mysql daemon first and re-start it without authorization c...

Nice list of icon sets that come in the form of fonts.

I recommend Font Awesome.

Jedes nicht rein private Profil auf Social Media Portalen muss ein Impressum haben, das heißt insbesondere Unternehmen und Freiberufler (§ 5 Abs.1 TMG). Wer das Impressum dort nicht unter einem eigene Button mit der Aufschrift “Impressum” oder “Kontakt” unterbringt, bietet eine große Angriffsfläche für Abmahner (Quelle: http://rechtsanwalt-schwenke.de/impressumspflicht-bei-google-plus-und-twitter/).

Hier also in kurzen Schritten, wie man ein Impressum erstellt und wie man es bei Facebook und Twitter einbindet:

#1. Impressum erstellen

Ic...

You can quickly access views that belong to a controller by using the tiny "page with arrow" icon in the gutter:

Access a method's view file

Click the icon next to the method definition in the controller.

If a view file does not yet exist, RubyMine will prompt you for its filename.

All views & partials associated to a controller

For a list of all views and partials that belong to the current ...

This Firebug feature is called simply Log Events and allows developers to log DOM events into the Console panel.

All you need to do is right click on an element in the HTML panel, pick Log Events from the context menu and switch to the Console panel to see the logs in action.

Explanation of the "bootstrap 2" base CSS.

Contains information about:

• Typography
• Code
• Tables
• Forms
• Buttons
• Icons

When you develop a gem and you have a Gemfile in your project directory, you might be surprised that your gem dependencies aren't already required in your specs. Here is some info that should help you out:

• Bundler actually doesn't automatically require anything. You need to call Bundler.require(:default, :your_custom_group1, ...) for that. The reason why you never had to write this line is that Rails does this for you when it boots the environment.
• That also means that if you have an embedded Rails app in your spec folder (like [h...

Consul 0.4.0 comes with some new features.

Dependencies

• Consul no longer requires assignable_values, it's optional for when you want to use the authorize_values_for macro.
• Consul no longer uses ActiveSupport::Memoizable because that's deprecated in newer Railses. Consul now uses Memoizer for this.

Temporarily change the current power

When you set Power.current to a power in an RS...

Write your app using HTML, CSS or JavaScript, upload it to the PhoneGap Build service and get back app-store ready apps for Apple iOS, Google Android, Windows Phone 7, Palm, Symbian, BlackBerry and more.

By compiling in the cloud with PhoneGap Build, you get all the benefits of cross-platform development but can still build apps just the way you like.

When deploying, Capistrano puts a REVISION file into your application's release directory. It contains the hash of the commit which was deployed.

If you want to know the currently deployed release, simply SSH to a server and view that file.

$ cat /var/www/my-project/current/REVISION
cf8734ece3938fc67262ad5e0d4336f820689307

Capistrano task

When your application is deployed to multiple servers, you probably want to see a result for all of them.
Here is a Capistrano task that checks all servers with the :app role.