The WebSocket protocol is made available to rails via ActionCable. Let’s first take a look at what happens in a standard HTTP request-response cycle in the browser. A client (which is a browser let’s say — the user goes to a website and requests to see a page) sends a…

If you have users and are trying to implement functionality where users can track other users, creating a self-referential association with friendships can be the way to go. This will basically help you to build “friendships” between two users. To explore the association let's first talk about what the friendship…

If you’ve built rails apps before, you know that it is possible to build a full user authentication system from scratch. Let’s talk about what goes into an authentication system first. For users — using the app: The ability to sign up for the application — hashed password, so…

In a standard HTTP request-response cycle, we make a request from the browser - it hits our server - we receive the information we need and it is sent through a new page (causing a page refresh for every cycle). However, sometimes even while the whole page is reloaded, only…

Whenever you’re working with secure credentials (such as a publishable token), you want a secure way to handle them so that they don’t show up in your repository or in any other open form. In the past, we were able to use environment variables — which we still can use…

In this blog, we’ll talk about the JavaScript Fetch API and how to use it to make asynchronous HTTP requests. The Fetch API is a modern interface that allows you to make HTTP requests to servers from web browsers. If you have worked with XMLHttpRequest (XHR) object, the Fetch API…

Data structures, amongst other things, are used to store and organize data. Different types of data are more efficiently organized using particular data structures. Trees are non-linear data structures which are quite often used to represent hierarchical data such as the employee organizational structure in a company. Structure of a Tree A tree is…

Concepts and Examples. Object-Oriented Programming is a concept that is usually taught in one of the initial lessons or courses in computer science. This is because it lies the foundation for how upcoming languages will work (fundamentally). …

This week I decided to backtrack from front-end development for a bit to brush up my Ruby on Rails skills (mainly to test if I may have forgotten anything). Thus, I began an Instagram clone application that includes all CRUD fundamentals. Not to my surprise(well, maybe kind of) I sailed…