This snippet makes links that refer to an anchor (like "...
...") scroll softly to it.\ In this example we only do...
Very nice font for programming.
Copy the attached Ruby code to config/initializers, or paste it into your IRB console. You can now dump any two...
Put the attached file into config/initializers/ to be able to say created_within on any ActiveRecord or its scope chain...
Deprecated ways to execute shell code in Ruby This is just a reference for legacy code. For new code, always...
When your cucumber features grow massively over time, the test execution can take a lot of time.
One of the more controversial changes in the Ubuntu 10.04 beta is the Mac OS-inspired change to have window...
Soon after having written our shell-for script, we wanted to easily get dumps of our productions machines, too. This...
After having written useful scripts into makandra notes for a long time, we’ve now tied them into a powerful...
Since May 2011 we are cutting new gems using Bundler, which is less painful than cutting gems using Jeweler. You...
Capybara allows you to select DOM elements, e.g. by using field, find_field(...) or field_labeled(...): role_select = field_labeled...
Asset pipeline, HTTP streaming, jQuery as default framework, auto-reversable migrations, identity map for ActiveRecord. Ruby 1.8.x support will...
Today I needed to execute a ruby gem executable with sudo. But, surprisingly, bash would tell me command not found...
Although regular expression syntax is 99% interchangeable between languages, keep this in mind: By default, the dot character (".") does not...
We recently decided to put static content for HouseTrip.com to Amazon Cloudfront for a faster user experience. This happens fully...
To set the hostname of your Mac, run the following command in Terminal: sudo scutil --set HostName my-new-hostname.local
Validations that need to access an associated object may lead to some trouble. Let's exemplify that using this example...
Occasionally you need to do something directly on the server -- like having all records recalculate something that cannot be done...
Ruby comes with a class BigDecimal which you can use for arbitrary precision arithmetic. You should use BigDecimal instead of...
When storing floating-point numbers such as prices or totals in an SQL database, always use a DECIMAL column. Never...
When deploying an application with "cap deploy" by default [1] you only deploy your code but do not run migrations...
You set a flash message and it shows up as it should. However, it is displayed again the next time...
The Edge Rider gem will define a method collect_ids on your ActiveRecord models, scopes, integer scalars and collections, which...
ActiveRecord gives you the :include option to load records and their associations in a fixed number of queries. This is...