Ruby On Rails

Tutorials

RSpec::Core Cheat Sheet

RSpec::Core Cheat Sheet RSpec is a mature, feature-packed testing framework, but the documentation can be difficult to navigate. The official documentation is written as a set of Cucumber tests within Relish. It’s very comprehensive, but also quite sparse, and Cucumber ...

Generating PDFs From HTML With Rails

Generating PDFs From HTML With Rails Internally, PDFKit uses wkhtmltopdf (WebKit HTML to PDF), an engine that will take HTML and CSS, render it using WebKit, and output it as a PDF with high quality. To start, install wkhtmltopdf on your computer. You can download the binary or inst...

Creating staging and other environments in Rails Ruby on Rails come with three environments by default – development, testing and production. But sooner or later one has a need for staging environment. And don’t get me wrong, you can (or should?) use the production settings there, but if you run...

Python Django vs Ruby on Rails

Python Django vs Ruby on Rails Django was born in a newsroom to deal with strict time-limits. It had to exclude a lot of routine activities during the development process. The Django project is represented as an app. You can combine different applications to build a more scalab...

HOWTO scrape websites with Ruby & Watir

HOWTO scrape websites with Ruby & Watir Web scraping is an approach for extracting data from websites that don’t have an API. Web scraping code is inherently “brittle” (prone to breaking over time due to changes in the website content and structure), but it’s a flexible technique with a...

New framework defaults in Rails 5 to make upgrade easier

New framework defaults in Rails 5 to make upgrade easier When a new version of Rails comes out, one of the pain points is upgrading existing apps to the latest version. A Rails upgrade can be boiled down to following essential steps : 2. Have a green build 4. Update the Rails version in Gemfile an...

Y combinator real life application: recursive memoization in ruby

Y combinator real life application: recursive memoization in ruby When we presented the Y combinator, we said that it was very aesthetic but not so practical.Today, we are going to show a real life application of the Y combinator: the memoization of a recursive function.

Behind The Scenes: How Numbers Work in Ruby

Behind The Scenes: How Numbers Work in Ruby Ruby 2.4 will be merging both Fixnum & Bignum into the same class (Integer) so I think this is a good time to review the different number types in Ruby! All this means is that Fixnum objects are closer to symbols in terms of how they work at the i...

AkitaOnRails - The Ruby Community and Reputation

AkitaOnRails - The Ruby Community and Reputation I've just read the posts from Adam Hawkins and the support from Alan Bradburne over Ruby Weekly.As a disclaimer, I don't know them, and I respect their points of view, it's not supposed to start a flame war, just to paint an alternative point of v...

Human Time Rails Gem

Human Time Rails Gem Have you ever struggled to understand what a piece of code like this is trying to say? some_time > another_time It should be simple, but our brains don't think in terms of "greater than" or "less than" when it comes to times and dates. human_ti...

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