A short overview of common design patterns implemented within Rails

Posted Almost 2 years ago. Visible to the public. Linked content.

The linked content includes a few design patterns implemented with Ruby on Rails.

What is the card indented to achieve?

  • You can use the pattern names for code reviews, so all parties know with only a few words which change is requested. Example: "Please use a form object here"
  • You can learn about new code patterns
  • You should read the sections "Advantages of using design patterns" and "Disadvantages of using design patterns in a wrong way", since design patterns do not replace good code

Included Design Patterns: Service, Value object, Presenter, Decorator, Builder, Form object, Policy object, Query object, Observer, Interactor and Null object

paweldabrowski.com
Emanuel
makandra.de
Say thanks1
Last edit
Almost 2 years ago
Emanuel
License
Source code in this card is licensed under the MIT License.

Related cards:

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...

Async control flow in JavaScript: Promises, Microtasks, async/await

Slides for Henning's talk on Sep 21st 2017.

Understanding sync vs. async control flow

Talking to synchronous (or "blocking") API

print('script start')
html = get('/foo')
print(html)
print('s...

JavaScript without jQuery (presentation from 2019-01-21)

Summary

  • We want to move away from jQuery in future projects
  • Motivations are performance, bundle size and general trends for the web platform.
  • The native DOM API is much nicer than it used to be, and we can polyfill the missing pieces
  • Un...

Delivering Carrierwave attachments to authorized users only

Preparation

To attach files to your records, you will need a new database column representing the filename of the file. To do this, add a new migration (rails g migration <name>) with the following content:

class AddAttachmentToNotes...

Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails

For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra. It has been written as a Ruby Gem and was tested and evaluated against one Ruby on Rails project....

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: A deep dive into 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...

The Ruby Object Model

In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...

Rails: Rest API post-mortem analysis

This is a personal post-mortem analysis of a project that was mainly build to provide a REST API to mobile clients.

For the API backend we used the following components:

  • Active Model Serializer (AMS) to serializer our Active Record models to J...

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.

The thing is: Both the **operating system and Browser of your client must support the container ...

Posted by Emanuel to makandra dev (2022-08-02 11:35)
This website uses short-lived cookies to improve usability.
or learn more