With dynamic nested forms, you can create forms that automatically calculate fields based on the information that has been entered into previous fields. If you’re building a form for your online store, for example, you might want to create a product listing form with several different fields: name, category and price. If the user selects “blue jeans” as their category and then enters $50 as their price, then the form will automatically calculate all of the necessary information—including tax—and display it in an easy-to-read format.

There it is, you’ve got that first inkling of an idea. You were just talking with your friend about the problem they were having - and you’ve got the solution. It’s so genius, you think, how come no one has ever thought about this before?

If you need SaaS business inspiration, look no further than YouTube. Three PayPal employees created an online dating website that failed at its original purpose but had an amazing video uploading platform. Realizing there was no such thing as a video sharing platform, they switched their ideas. Fifteen years later and YouTube is worth around $15 billion.

Generating encrypted zip files in Rails is an excellent way to secure sensitive data, and it’s easy to do.

In this article, we will discuss an easier way to search and sort in Rails, using a gem called ransack.

Exporting data to CSV is an excellent way to move your data out of a database and into a spreadsheet. The ability to export data from a Rails application is especially useful when you want to use it in another application or process.

This article will discuss how to implement several helpful string methods in Ruby on Rails: camelize, classify, humanize and inquiry.

When upgrading a legacy Rails app that has buttons/links that trigger raw ajax instead of remote: true for making javascript format requests, adding remote: true can make things simpler.

Before Rails 5, all constants were loaded via ‘autoloading’ when the application booted up. Rails 5 replaced this with ‘eager loading,’ i.e loading all the constants even before they are actually needed. With ‘autoloading,’ the application does not load the constant until it is needed. Once a class is needed, if it is missing then the application starts looking in ‘autoload paths’ to load it. Eager_load_paths contains a list of directories. When the application boots then it loads all constants found in all directories listed in eager_load_paths.

There are many use cases that require an href link to be applied to an entire div. One such situation required an href to be applied to this entire icon in order to make it clickable:

Sometimes in Rails applications we need to perform an action based on a change in a particular attribute of a model.

When an exception occurs, the goal is always to handle it gracefully. A red page full of errors appears extremely unprofessional.

While updating ActiveStorage attachments, particularly those with the has_many_attached association in a Rails application, some common issues can arise. This article will discuss some such issues and their possible solutions.

In this article we will be explaining the difference between includes and joins in Rails ActiveRecord, a topic which often confuses newbies to Rails.

If you need to update an active record attachment that has been attached using has_one_attached relation with the parent model, you may encounter errors. Here’s an example:

This article will discuss HTTP Basic Authentication in Ruby on Rails. This can be useful when a page needs to be accessible only to users with a password.

This article will discuss how to bypass password and password confirmation in the registration process and send a password through email when a user registers themselves.

This article will discuss implementing STI(Single Table Inheritance) using Devise. First, create a project.

This article will discuss how to implement an admin panel with activeadmin in Ruby on Rails. First, create a project and a few models.

This article will discuss bullet gem which helps you watch n + 1 queries when they are being used unnecessarily, as well as helping you to determine when they should be used.

Keeping technical documentation handy is extremely useful, especially when a project gets huge in terms of the code and database. One of the documents that should be included in the documentation is an Entity Relationship Diagram, or ERD. This article will discuss how to generate ERD at any stage of a project.

This article will discuss how to implement JBuilder for creating JSON response in Ruby on Rails.

This article will discuss how to implement charts and graphs in Ruby on Rails 6 applications.

This article will discuss how to implement authorization in a Ruby on Rails application using CanCanCan. Here’s how to start:

This article will discuss how to integrate AWS S3 in a Ruby on Rails application using ActiveStorage.