The way MySQL's FULLTEXT tokenizer splits text into word tokens might not always be what you need. E.g. it splits a word at period characters.

Since the tokenizer has near-zero configuration options (minimum word length and stopwords list), you n...

So you client has asked you to implement a row of buttons to like the URL on Facebook, Twitter and Google+. Here are some things you should know about this.

0. Security considerations

Each "like" button is implemented by including a Javascript...

Tooltips that are delivered through HTML attributes are encoded. Decode entities before checking for their presence.

Capybara:

Then /^there should( not)? be a(n encoded)? tooltip "([^"]*)"$/ do |negate, encoded, tooltip|
  tooltip = HTML...

Imagine you have a list you want to render inline on large screens, but stacked on small screens.

<ul>
  <li>high</li>
  <li>medium</li>
  <li>low</li>
</ul>

ul { white-space: nowrap } /* optional: keep items in one line no matter th...

While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....

While upgrading CarrierWave from version 0.11.x to 3.x, we encountered some very nasty fails. Below are the basic changes you need to perform and some behavior you may eventually run into when upgrading your application. This aims to save you some...

In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...