You can make both mobile Chrome and mobile Safari display a native app install banner. The banner suggests that the...
Interesting talk about a team that integrated automated security testing into their BDD workflow. There is also a video of...
Unfortunately, Web APIs haven’t provided the functionality to copy text to the clipboard through JavaScript, which is why visiting...
Spreewald comes with a selector_for helper that matches an English term like the user's profile into a CSS...
I am happy to announce that this information is now available in JSON form at https://ip-ranges.amazonaws.com/ip-ranges.json. The information...
On Ruby 1.9+, standard ruby character classes like \w, \d will only match 7-Bit ASCII characters: "foo" =~ /\w+/ # matches...
If you'd like to preview the crontab that whenever will deploy, run the following: bundle exec whenever
You may encounter problems with passenger starting an application with an updated rails. If you find an error like this...
What is rake good for? Take a look at some of the Rake tasks that Rails gives you (rake...
How do HTTP requests and responses look like? What are HTTP headers? What are they used for?
If you need a postgresql extension for your database it isn't a good idea to give your applications database...
Read the Rails Guide about Active Record migrations Understand why we never use models in migrations. Checkout the repository...
Learn to store attachments in a way that is accessible by authorized users only Learn to prevent users from...
Understand how asynchronous JavaScript works: Read Henning's presentation about asynchronous Javascript (there's also a German video presentation...
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...
To check which rubygems versions your different rbenv rubys are using, you can use this small bash script:
As you most likely know validates_uniqness_of :foreign_id does not allow nil values by default.
Use form models to handle this problem Or soften the validation to validates_presence_of :parent
There is no single place to look up documentation for our stack. This card includes some hints where you can...
makandra's development process Learn about our process. The squares represent the state of the issue in Linear:
If you hover over the text of a card, you will now see EDIT links at the top right corner...
Use base_class. This traverses up the hierarchy until it encounters either a class inheriting from ActiveRecord::Base or