Use form models to handle this problem Or soften the validation to validates_presence_of :parent
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...
tig is a command line explorer for Git that is just awesome. Install via apt-get or brew. Handy commands...
Web security basics Einführung in die Web Security 🇩🇪 provides essentials for the topic of this card. Read following chapters:
Rubymonk training Read the following Rubymonk articles: Ruby Primer: Ascent (archived copy) Metaprogramming Ruby (archived copy) Metaprogramming Ruby: Ascent (archived...
Watch Solving bizarre authorization requirements with Rails Read the Consul README Read the assignable_values README Understand how Consul...
CTRL + SHIFT + ALT + N Search for any symbol in your application, like CSS classes, Ruby classes, methods, helpers etc...
Authentication is all about being able to verify the identity of a user in the context of our application.
Goal of this lesson is to understand what middlewares in Rack are good for. Rack Start with these articles:
In tests, it is sometimes useful to create records with specific ids. On PostgreSQL this can cause problems: Usually, PostgreSQL...
Read (or re-read) the following chapters from our book Growing Rails Applications in Practice (it’s in our...
Stepping forward from JavaScript Basics, the goal of this card is for you to be able to read and write...
A common task in web applications is to add client-side JavaScript behavior to existing HTML elements.
Software engineering principles Read about the following software engineering principles and code smells: Single Responsibility Principle Law of Demeter
To change RAM size, VDISK size or VCPU count of an openstack instance you have to use nova resize. You...
Jasmine comes with two matchers that test for equality. The first is toBe: expect(first).toBe(second) toBe passes when...
The migration DSL now supports adding and removing foreign keys. They are dumped to schema.rb as well. At this time...
Your after_commit callbacks will not know about changes, as Rails discards them when committing. The linked article shows a...
If you see a stacktrace beginning with lines like this: E, [2015-07-16T09:23:10.896146 #23308] ERROR -- : app...
Sometimes you need to run background jobs that you can't make important guarantees about - they may run out of...
If a SOAP API expects you to call a remote method with arguments of complex types, Savon lets you manually...
Large projects usually have large test suites that can run for a long time. This can be annoying as running...
Understand the differences between git diff and git diff --staged (or git diff --cached) Understand the difference between git...