Impression tracking is a valuable feature for many web applications as it allows you to keep a count of how many times a specific resource, like a post or a page, has been viewed. …

Problem 1: Connection Timed Out: Issue: You try to SSH into your AWS EC2 instance using a command like this: ssh -i "pem_file_name.pem" ubuntu@ec2-here_is_your_ip.ap-south-1.compute.amazonaws.com But you encounter the following error: ssh: connect to host ec2-here_is_your_ip.ap-south-1.compute.amazonaws.com port 22: Connection timed out Solutions: 2. Restart Your EC2 Instance: Sometimes, instances can become unresponsive. In such cases, a…

Introduction to Callbacks A callback is a method called at specific moments of an object’s lifecycle (right before or after creation, deletion, update, validation, saving, or loading from the database). example: class Listing < ApplicationRecord after_create :set_expiry_date private def set_expiry_date expiry_date = Date.today + 30.days self.update_column(:expires_on, expiry_date) end end Here…

Database migrations are a pivotal part of Ruby on Rails, enabling you to modify your database schema, create new tables, and establish relationships between them with ease. In this article, we’ll explore various aspects of creating database migrations in Rails. Adding and Removing Fields in Existing Tables One common task…

ActiveRecord: The Heart of Ruby on Rails — When building web applications with Ruby on Rails, ActiveRecord is a library that stands out as a fundamental component. It plays a central role in Rails’ model layer and is responsible for Object-Relational Mapping (O/R mapping). …

Sending emails from your Ruby on Rails application is a common task, and Gmail is a popular choice for SMTP (Simple Mail Transfer Protocol) services. However, to enhance security, Google requires you to use an “App Password” instead of your account password when accessing your Gmail account from third-party applications…

select: The select method is used to specify which columns of a database table you want to retrieve in a query. It allows you to create a custom query and fetch a collection of ActiveRecord objects, each representing a row in the database table. select returns ActiveRecord::Relation, SQL is issued using…

In the world of web development, JavaScript is a powerful tool that allows developers to create interactive and dynamic web applications. One common requirement in web development is controlling the behavior of the browser’s back button. In this blog post, we’ll dive deep into a JavaScript code snippet that disables…

The Problem: Deploying with Capistrano Deploying Rails applications with Capistrano is a powerful and widely used process, but it’s not always without its challenges. One common issue that can arise is the error message: The authenticity of host 'github.com (*.*.*.82)' can't be established. ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM. Are you sure you want to continue connecting (yes/no/[fingerprint])…