RulersGuides.js demo
RulersGuides.js is a Javascript library which enables Photoshop-like rulers and guides interface on a web page
Also available as a bookmarklet.
Related cards:
makandra cards: A knowledge base on web development, RoR, and DevOps
What is makandra cards?
We are makandra, a team of 60 web developers, DevOps and UI/UX experts from Augsburg, Germany. We have firmly anchored the sharing of knowledge and continuous learning in our company culture. O...
How to make changes to a Ruby gem (as a Rails developer)
At makandra, we've built a few gems over the years. Some of these are quite popular: spreewald (> 1M downloads), active_type (> 1M downloads), and geordi (> 200k downloads)
Developing a Ruby gem is different from developing Rails applications, w...
Video transcoding: Web and native playback overview (April 2020)
Intro
Embedding videos on a website is very easy, add a <video>
tag to your source code and it just works. Most of the time.
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Guide to localizing a Rails application
Localizing a non-trivial application can be a huge undertaking. This card will give you an overview over the many components that are affected.
When you are asked to give an estimate for the effort involved, go through the list below and check wh...
The JavaScript Object Model: Prototypes and properties
Speaker today is Henning Koch, Head of Development at makandra.
This talk will be in German with English slides.
Introduction
As web developers we work with JavaScript every day, even when our backend code uses anothe...
iPhone on Rails and ObjectiveResource; Making communication between the iPhone and a Rails web-service pain-free.
ObjectiveResource is an Objective-C port of Ruby on Rails' ActiveResource. It provides a way to serialize objects to and from Rails' standard RESTful web-services (via XML or JSON) and handles much of the complexity involved with invoking web-serv...
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Showing a custom maintenance page while deploying
Note
The maintenance mode is enabled on all application server as soon as the file
/public/system/maintenance.html
is present.
Installation
Add this line to your application's Gemfile:
gem 'capistrano', '~> 3.0'
gem 'capistrano...
JavaScript: Testing the type of a value
Checking if a JavaScript value is of a given type can be very confusing:
- There are two operators
typeof
andinstanceof
which work very differently. - JavaScript has some primitive types, like string literals, that are not objects (as oppose...
Upgrading Cucumber and Capybara to the latest versions available for Rails 2
Specify these gem versions in your Gemfile:
gem 'cucumber', '~> 1.3.0'
gem 'cucumber-rails', '= 0.3.2' # max version for Rails 2
gem 'capybara', '< 2' # capybara 2+ requires Rails 3
gem 'mime-types', '< 2' # dependeny of capybara
...