What is a Cookie? Google it if you do not know. How are cookies transferred between your browser and...
The asset pipeline is one of Rails' two mechanisms how stylesheets, javascripts and images from your /assets folder are processed...
Some tasks in a web application are better not done live when a user request a page, but in the...
Starting with Ruby 1.9, most #each methods can be called without a block, and will return an enumerator. This is...
A fantastic guide for a dilemma facing any web-based product. Here’s a simple set of Yes/No questions that...
To safely transport an arbitrary string within a URL, you need to percent-encode characters that have a particular meaning...
As the web is being used for more and more tasks, expectations rise. Not only should web pages offer rich...
While debugging an intricate issue with failed HTTP requests I have come to appreciate the more advanced features of the...
Understand how nested attributes appear in the params. See how the Rails form helpers encode the names of nested...
I recommend install Node.js using nvm. This way you can have multiple Node versions in your ~/.nvm. You also won...
You have the following HTML structure:
If you want to run Javascript code whenever someone clicks on a ...
..., you...
In our daily life as web developers we are constantly faced with technical problems that can be solved with a...
We've already learned how to integrate user-provided images uploads to our application in 205 basic file uploads and...
Your MovieDB gained traction and is now a popular tool among cineasts. This comes with a downside: You noticed a...
For each movie in MovieDB, we want to track which other movie it was inspired by. For...
We use Selenium WebDriver integrated with Cucumber/Capybara for full-stack integration testing. Try and use it Your forked MovieDB should...
Built-in matchers Get an overview of all the matchers that are built into RSpec. Play with some of...
Ruby has Enumerable.find(&block), which returns the first item in the collection for which the block evaluates to true.
How do HTTP requests and responses look like? What are HTTP headers? What are they used for?
Learn to store attachments in a way that is accessible by authorized users only Learn to prevent users from...
In a web application you often need to move data between the client (HTML, Javascript) and the server (Ruby, Rails...
Exercise 1: Maps In MovieDB, add a new field “Principal filming location”. In a movie’s show view, geocode that...
You can include files from app/assets or from the public folder with javascript_include_tag. The subtle difference that tells...
makandra's development process Learn about our process. The squares represent the state of the issue in Linear: